void deconvolve(
double * mod_p
, double * res_p
, double * psf_p // not a 'const' because modifies the pad area (zeroes)
, int siz
, int pitch
, unsigned int niters
, double gain
, double threshold
) {
place
found_place_psf
, found_place_res
;
memset(mod_p, 0, siz * pitch * sizeof(double));
findPeak(psf_p, &found_place_psf, siz, pitch);
for (unsigned int i = 0; i < niters; ++i) {
findPeak(res_p, &found_place_res, siz, pitch);
if (abs(found_place_res.val) < threshold) break;
subtractPSF(res_p, psf_p, found_place_res.pos, found_place_psf.pos, pitch, found_place_res.val * gain);
mod_p[found_place_res.pos] += found_place_res.val * gain;
}
}
int findPeak(const vector<int> &num, int begin, int end)
{
if(begin > end) return 0;
if(begin == end) return begin;
int mid = (begin+end)/2;
if ((mid == 0 || num[mid-1] <= num[mid]) &&
(mid == num.size()-1 || num[mid+1] <= num[mid])) // Compare middle element with its neighbours (if neighbours exist)
return mid;
else if (mid > 0 && num[mid-1] > num[mid]) // If middle element is not peak and its left neighbor is greater than it
// then left half must have a peak element
return findPeak(num, begin, mid);
else return findPeak(num, mid+1, end); // If middle element is not peak and its right neighbor is greater than it
// then right half must have a peak element
}
/* Driver program to check above functions */
int main()
{
int arr[] = {1,4,3,2,1,0,1,4};
int n = sizeof(arr)/sizeof(arr[0]);
printf("Index of a peak point is %d", findPeak(arr, n));
return 0;
}
void FastMultiScaleClean<ImageSetType>::cleanThreadFunc(ao::lane<CleanTask> *taskLane, ao::lane<CleanResult> *resultLane, CleanThreadData cleanData)
{
CleanTask task;
// This initialization is not really necessary, but gcc warns about possible uninitialized values otherwise
task.peak = ImageSetType::Value::Zero();
ImageSetType& imageSet = *cleanData.parent->_dataImageLargeScale;
ImageSetType& nextScaleSet = *cleanData.parent->_dataImageNextScale;
const std::vector<double*>& psfs = *cleanData.parent->_scaledPsfs;
while(taskLane->read(task))
{
for(size_t i=0; i!=imageSet.ImageCount(); ++i)
{
subtractImage(imageSet.GetImage(i), psfs[ImageSetType::PSFIndex(i)], task.cleanCompX, task.cleanCompY, this->_subtractionGain * task.peak.GetValue(i), cleanData.startY, cleanData.endY);
}
for(size_t i=0; i!=nextScaleSet.ImageCount(); ++i)
{
subtractImage(nextScaleSet.GetImage(i), psfs[ImageSetType::PSFIndex(i)], task.cleanCompX, task.cleanCompY, this->_subtractionGain * task.peak.GetValue(i), cleanData.startY, cleanData.endY);
}
CleanResult result;
findPeak(result.nextPeakX, result.nextPeakY, cleanData.startY, cleanData.endY);
if(result.nextPeakX == _rescaledWidth)
result.peakLevelUnnormalized = std::numeric_limits<double>::quiet_NaN();
else
result.peakLevelUnnormalized = imageSet.AbsJoinedValue(result.nextPeakX + result.nextPeakY*_rescaledWidth);
resultLane->write(result);
}
}
// The implementation of the QRS flow-chart. Searchers for RPeaks.
void qrs(int i, int recursive) {
int TIME, PEAK, TYPE = 0, prbool = 0;
if(recursive == 0){
peakmem.peaks[mem.index[5]] = findPeak(mem.mwimem[getIndex(3, mem.index[4], -2)], mem.mwimem[getIndex(3, mem.index[4], -1)], mem.mwimem[getIndex(3, mem.index[4], 0)]);
peakmem.RR_COUNTER++;
}
if(mem.mwimem[getIndex(3, mem.index[4], -1)] < peakmem.THRESHOLD1){
bool = 1;
}
/*Return the average doppler centroid (in fractional PRF)
of inFile using fftLen lines starting at startLine*/
double fftEstDop(getRec *inFile,int startLine,int xStride,int fftLen)
{
int x,y,i,wid=inFile->nSamples;
float *power,peak;
complexFloat *in,*fft;
/*Allocate arrays.*/
in=(complexFloat *)MALLOC(sizeof(complexFloat)*fftLen*wid);
fft=(complexFloat *)MALLOC(sizeof(complexFloat)*fftLen);
power=(float *)MALLOC(sizeof(float)*fftLen);
/*Set power sum to zero.*/
for (i=0;i<fftLen;i++)
power[i]=0;
/*Read in fftLen lines of data.*/
for (y=0;y<fftLen;y++)
getSignalLine(inFile,startLine+y,&(in[y*wid]),0,wid);
/*FFT each column, add to power sum array.*/
cfft1d(fftLen,NULL,0);
for (x=0;x<wid;x+=xStride)
{
for (y=0;y<fftLen;y++)
fft[y]=in[y*wid+x];
cfft1d(fftLen,fft,-1);
for (i=0;i<fftLen;i++)
power[i] += fft[i].real*fft[i].real
+ fft[i].imag*fft[i].imag;
}
/*Find peak of azimuth power array-- this is the center of the doppler.*/
power[0]=0.0;/*Zero out DC component (misleading).*/
filter_lowPass(power,fftLen,4);/*Do a low-pass on the power array.*/
peak=findPeak(power,fftLen);
if (!quietflag) printf("Peak at %f\n",peak);
FREE(in);
FREE(fft);
FREE(power);
return peak/fftLen;
}
void findFittingWindow(par * p, const data * d)
{
int i;
if(p->verbose>=0)
printf("\nPEAK FINDER\n-----------\n");
peak_search_par pspar;
for (i=0;i<p->numSpectra;i++)
{
pspar.searchMin=p->startCh[i];
pspar.searchMax=p->endCh[i];
pspar.windowSize=(int)(pspar.searchMax-pspar.searchMin)/10;
peak_fit_par pfpar = findPeak(&pspar, d->expHist[p->spectrum[i]], S32K);
if(p->verbose>=0)
printf("Spectrum %i: peak found with centroid at channel %i.\n",i,(int)pfpar.centroid);
int range=abs(pspar.searchMax-pspar.searchMin);
if(p->peakSearchWidth>0)
range=p->peakSearchWidth;
p->startCh[i]=pfpar.centroid-(int)(range/2);
p->endCh[i]=pfpar.centroid+(int)(range/2);
}
if(p->verbose>=0)
printf("Fit window(s) centered on peak(s)...\n");
}
int findPeakElement(const vector<int> &num) {
if(num.empty()) return 0;
int n = num.size();
return findPeak(num, 0, n-1);
}
int main()
{
DDRB |= _BV(5);
PORTB &= ~_BV(5);
/////////////////////////////
// Set up the analogue input
setupAdcOnPin(0);
adcStartConversion(); // Start ADC measurement
pulseSetFrameBuffer(frameBuffer, NUM_LEDS);
const uint8_t pulseCount = 10;
uint8_t pulseIdx = 0;
struct cPulse pulses[pulseCount];
memset(pulses, 0, sizeof(struct cPulse) * pulseCount);
for (int i = 0; i < pulseCount; i += 2)
{
pulses[i].direction = 1;
}
uint8_t sampleHistory[HISTORY_COUNT];
memset(sampleHistory, 0, HISTORY_COUNT);
int8_t startingPosition = 0;
while(1)
{
++toggle;
toggle = toggle % 50;
setIndicator(toggle == 0);
// Hist = = = = =
// Wind - -
// Copy - -
for (int i = 0; i < (HISTORY_COUNT - WINDOW_SIZE); ++i)
{
sampleHistory[i] = sampleHistory[i + WINDOW_SIZE];
}
for (int i = 0; i < WINDOW_SIZE; ++i)
{
adcStartConversion();
_delay_us(500);
adcWaitReady();
sampleHistory[WINDOW_START + i] = ADCH;
}
uint8_t historicalPeak = findPeak(sampleHistory, 0, WINDOW_START);
uint8_t currentPeak = findPeak(sampleHistory, WINDOW_START, WINDOW_SIZE);
if (isPulseDetected(historicalPeak, currentPeak))
{
// Generate a new pulse
if (++pulseIdx >= pulseCount) pulseIdx = 0;
pulses[pulseIdx].colour.h = rand() % MAX_HUE;
pulses[pulseIdx].colour.s = (MAX_SAT / 2) + (rand() % (MAX_SAT / 2));
pulses[pulseIdx].colour.v = MAX_VAL;
pulses[pulseIdx].position = startingPosition;
startingPosition -= 3;
if (startingPosition < 0) startingPosition += NUM_LEDS;
}
pulseClearFrameBuffer();
for (int i = 0; i < pulseCount; ++i)
{
pulseUpdate(pulses + i);
pulseRender(pulses + i);
}
ws2812_setleds(frameBuffer, 40); // Blocks for ~1.2ms
_delay_ms(2); // The sensor line will be noisy for a little while
}
}
int fftMatch(char *inFile1, char *inFile2, char *corrFile,
float *bestLocX, float *bestLocY, float *certainty)
{
int nl,ns;
int mX,mY; /*Invariant: 2^mX=ns; 2^mY=nl.*/
int chipX, chipY; /*Chip location (top left corner) in second image*/
int chipDX,chipDY; /*Chip size in second image.*/
int searchX,searchY; /*Maximum distance to search for peak*/
int x,y;
float doubt;
float *corrImage=NULL;
FILE *corrF=NULL,*in1F,*in2F;
meta_parameters *metaMaster, *metaSlave, *metaOut;
in1F = fopenImage(inFile1,"rb");
in2F = fopenImage(inFile2,"rb");
metaMaster = meta_read(inFile1);
metaSlave = meta_read(inFile2);
/*Round to find nearest power of 2 for FFT size.*/
mX = (int)(log((float)(metaMaster->general->sample_count))/log(2.0)+0.5);
mY = (int)(log((float)(metaMaster->general->line_count))/log(2.0)+0.5);
/* Keep size of fft's reasonable */
if (mX > 13) mX = 13;
if (mY > 15) mY = 15;
ns = 1<<mX;
nl = 1<<mY;
/* Test chip size to see if we have enough memory for it */
/* Reduce it if necessary, but not below 1024x1024 (which needs 4 Mb of memory) */
float *test_mem = (float *)malloc(sizeof(float)*ns*nl*2);
if (!test_mem && !quietflag) asfPrintStatus("\n");
while (!test_mem) {
mX--;
mY--;
ns = 1<<mX;
nl = 1<<mY;
if (ns < 1024 || nl < 1024) {
asfPrintError("FFT Size too small (%dx%d)...\n", ns, nl);
}
if (!quietflag) asfPrintStatus(" Not enough memory... reducing FFT Size to %dx%d\n", ns, nl);
test_mem = (float *)malloc(sizeof(float)*ns*nl*2);
}
FREE(test_mem);
if (!quietflag) asfPrintStatus("\n");
/*Set up search chip size.*/
chipDX=MINI(metaSlave->general->sample_count,ns)*3/4;
chipDY=MINI(metaSlave->general->line_count,nl)*3/4;
chipX=MINI(metaSlave->general->sample_count,ns)/8;
chipY=MINI(metaSlave->general->line_count,nl)/8;
searchX=MINI(metaSlave->general->sample_count,ns)*3/8;
searchY=MINI(metaSlave->general->line_count,nl)*3/8;
fft2dInit(mY, mX);
if (!quietflag && ns*nl*2*sizeof(float)>20*1024*1024) {
asfPrintStatus(
" These images will take %d megabytes of memory to match.\n\n",
ns*nl*2*sizeof(float)/(1024*1024));
}
/*Optionally open the correlation image file.*/
if (corrFile) {
metaOut = meta_read(inFile1);
metaOut->general->data_type= REAL32;
metaOut->general->line_count = 2*searchY;
metaOut->general->sample_count = 2*searchX;
corrF=fopenImage(corrFile,"w");
}
/*Perform the correlation.*/
fftProd(in1F,metaMaster,in2F,metaSlave,&corrImage,ns,nl,mX,mY,
chipX,chipY,chipDX,chipDY,searchX,searchY);
/*Optionally write out correlation image.*/
if (corrFile) {
int outY=0;
float *outBuf=(float*)MALLOC(sizeof(float)*metaOut->general->sample_count);
for (y=chipY-searchY;y<chipY+searchY;y++) {
int index=ns*modY(y,nl);
int outX=0;
for (x=chipX-searchX;x<chipX+searchX;x++) {
outBuf[outX++]=corrImage[index+modX(x,ns)];
}
put_float_line(corrF,metaOut,outY++,outBuf);
}
meta_write(metaOut, corrFile);
meta_free(metaOut);
FREE(outBuf);
FCLOSE(corrF);
}
/*Search correlation image for a peak.*/
findPeak(corrImage,bestLocX,bestLocY,&doubt,nl,ns,
chipX,chipY,searchX,searchY);
*certainty = 1-doubt;
FREE(corrImage);
if (!quietflag) {
asfPrintStatus(" Offset slave image: dx = %f, dy = %f\n"
" Certainty: %f%%\n",*bestLocX,*bestLocY,100*(1-doubt));
}
meta_free(metaSlave);
meta_free(metaMaster);
FCLOSE(in1F);
FCLOSE(in2F);
return (0);
}
void FastMultiScaleClean<ImageSetType>::executeMajorIterationForScale(double currentScale, double nextScale, bool& reachedStopGain, bool& canCleanFurther)
{
ImageBufferAllocator& allocator = *_dataImageOriginal->Allocator();
// Scale down the image so that the "scale size" is 10 pixels
// 10 pixels is so that the peak finding is still reasonably accurate
_rescaledWidth = size_t(ceil(double(_originalWidth)*(10.0/currentScale))),
_rescaledHeight = size_t(ceil(double(_originalHeight)*(10.0/currentScale)));
double rescaleFactor = double(_rescaledWidth) / _originalWidth;
if(_rescaledWidth > _originalWidth || _rescaledHeight > _originalHeight)
{
_rescaledWidth = _originalWidth;
_rescaledHeight = _originalHeight;
rescaleFactor = 1.0;
}
ImageSetType
largeScaleImage(_rescaledWidth*_rescaledHeight, *_dataImageOriginal),
nextScaleImage(_rescaledWidth*_rescaledHeight, *_dataImageOriginal),
currentScaleModel(_rescaledWidth*_rescaledHeight, *_modelImage);
std::vector<double*> scaledPsfs(_originalPsfs->size());
_dataImageLargeScale = &largeScaleImage;
_dataImageNextScale = &nextScaleImage;
_scaledPsfs = &scaledPsfs;
canCleanFurther = true;
size_t cpuCount = this->_threadCount;
double thresholdBias = pow(this->_multiscaleThresholdBias, log2(currentScale));
std::cout << "Threshold bias: " << thresholdBias << '\n';
double oldSubtractionGain = this->_subtractionGain;
this->_subtractionGain *= sqrt(thresholdBias);
// Fill the large and next scale images with the rescaled images
FFTResampler imageResampler(_originalWidth, _originalHeight, _rescaledWidth, _rescaledHeight, cpuCount, false);
imageResampler.Start();
for(size_t i=0; i!=_dataImageOriginal->ImageCount(); ++i)
imageResampler.AddTask(_dataImageOriginal->GetImage(i), largeScaleImage.GetImage(i));
for(size_t i=0; i!=_originalPsfs->size(); ++i)
{
scaledPsfs[i] = allocator.Allocate(_rescaledWidth*_rescaledHeight);
imageResampler.AddTask((*_originalPsfs)[i], scaledPsfs[i]);
}
imageResampler.Finish();
for(size_t i=0; i!=_dataImageOriginal->ImageCount(); ++i)
memcpy(nextScaleImage.GetImage(i), largeScaleImage.GetImage(i), sizeof(double)*_rescaledWidth*_rescaledHeight);
for(size_t i=0; i!=currentScaleModel.ImageCount(); ++i)
memset(currentScaleModel.GetImage(i), 0, sizeof(double)*_rescaledWidth*_rescaledHeight);
// Convolve the large and next scale images and the psfs
double* kernelImage = allocator.Allocate(_rescaledWidth * _rescaledHeight);
ao::uvector<double> shape;
size_t kernelSize;
MakeShapeFunction(currentScale * rescaleFactor, shape, kernelSize);
memset(kernelImage, 0, sizeof(double) * _rescaledWidth * _rescaledHeight);
FFTConvolver::PrepareSmallKernel(kernelImage, _rescaledWidth, _rescaledHeight, shape.data(), kernelSize);
for(size_t i=0; i!=largeScaleImage.ImageCount(); ++i)
FFTConvolver::ConvolveSameSize(largeScaleImage.GetImage(i), kernelImage, _rescaledWidth, _rescaledHeight);
for(size_t i=0; i!=scaledPsfs.size(); ++i) {
FFTConvolver::ConvolveSameSize(scaledPsfs[i], kernelImage, _rescaledWidth, _rescaledHeight);
FFTConvolver::ConvolveSameSize(scaledPsfs[i], kernelImage, _rescaledWidth, _rescaledHeight);
}
MakeShapeFunction(nextScale * rescaleFactor, shape, kernelSize);
memset(kernelImage, 0, sizeof(double) * _rescaledWidth * _rescaledHeight);
FFTConvolver::PrepareSmallKernel(kernelImage, _rescaledWidth, _rescaledHeight, shape.data(), kernelSize);
for(size_t i=0; i!=nextScaleImage.ImageCount(); ++i)
FFTConvolver::ConvolveSameSize(nextScaleImage.GetImage(i), kernelImage, _rescaledWidth, _rescaledHeight);
//FitsWriter writer;
//writer.SetImageDimensions(_rescaledWidth, _rescaledHeight);
//writer.Write("multiscale-kernel.fits", kernelImage);
//writer.Write("multiscale-current-scale.fits", largeScaleImage.GetImage(0));
//writer.Write("multiscale-next-scale.fits", nextScaleImage.GetImage(0));
//writer.Write("multiscale-psf.fits", scaledPsfs[0]);
//writer.SetImageDimensions(kernelSize, kernelSize);
//writer.Write("multiscale-shape.fits", shape.data());
size_t componentX=0, componentY=0;
findPeak(componentX, componentY);
std::cout << "Initial peak: " << peakDescription(largeScaleImage, componentX, componentY, rescaleFactor) << '\n';
size_t peakIndex = componentX + componentY*_rescaledWidth;
double peakNormalized = _dataImageLargeScale->JoinedValueNormalized(peakIndex) * rescaleFactor * rescaleFactor;
double firstThreshold = this->_threshold, stopGainThreshold = fabs(peakNormalized*(1.0-this->_stopGain)/thresholdBias);
std::cout << "Scale-adjusted threshold: " << firstThreshold*thresholdBias << ", major iteration stops at " << stopGainThreshold*thresholdBias << '\n';
if(stopGainThreshold > firstThreshold)
{
firstThreshold = stopGainThreshold;
std::cout << "Next major iteration for this scale at: " << stopGainThreshold << '\n';
}
else if(this->_stopGain != 1.0) {
std::cout << "Major iteration threshold reached global threshold of " << this->_threshold << " for this scale.\n";
}
std::vector<ao::lane<CleanTask>*> taskLanes(cpuCount);
std::vector<ao::lane<CleanResult>*> resultLanes(cpuCount);
boost::thread_group threadGroup;
for(size_t i=0; i!=cpuCount; ++i)
{
taskLanes[i] = new ao::lane<CleanTask>(1);
resultLanes[i] = new ao::lane<CleanResult>(1);
CleanThreadData cleanThreadData;
cleanThreadData.startY = (_rescaledHeight*i)/cpuCount;
cleanThreadData.endY = _rescaledHeight*(i+1)/cpuCount;
cleanThreadData.parent = this;
threadGroup.add_thread(new boost::thread(&FastMultiScaleClean<ImageSetType>::cleanThreadFunc, this, &*taskLanes[i], &*resultLanes[i], cleanThreadData));
}
while(fabs(peakNormalized) > firstThreshold*thresholdBias && this->_iterationNumber < this->_maxIter && !(largeScaleImage.IsComponentNegative(peakIndex) && this->_stopOnNegativeComponent))
{
if(this->_iterationNumber <= 10 ||
(this->_iterationNumber <= 100 && this->_iterationNumber % 10 == 0) ||
(this->_iterationNumber <= 1000 && this->_iterationNumber % 100 == 0) ||
this->_iterationNumber % 1000 == 0)
std::cout << "Iteration " << this->_iterationNumber << ": " << peakDescription(largeScaleImage, componentX, componentY, rescaleFactor) << '\n';
CleanTask task;
task.cleanCompX = componentX;
task.cleanCompY = componentY;
task.peak = largeScaleImage.Get(peakIndex);
for(size_t i=0; i!=cpuCount; ++i)
taskLanes[i]->write(task);
currentScaleModel.AddComponent(largeScaleImage, peakIndex, this->_subtractionGain * rescaleFactor * rescaleFactor);
double peakUnnormalized = 0.0;
for(size_t i=0; i!=cpuCount; ++i)
{
CleanResult result;
resultLanes[i]->read(result);
if(result.peakLevelUnnormalized >= peakUnnormalized && std::isfinite(result.peakLevelUnnormalized))
{
peakUnnormalized = result.peakLevelUnnormalized;
componentX = result.nextPeakX;
componentY = result.nextPeakY;
}
}
if(peakUnnormalized == 0.0)
{
std::cout << "No more components found at current scale: continuing to next scale.\n";
canCleanFurther = false;
break;
}
peakIndex = componentX + componentY*_rescaledWidth;
peakNormalized = largeScaleImage.JoinedValueNormalized(peakIndex) * rescaleFactor * rescaleFactor;
++this->_iterationNumber;
}
for(size_t i=0; i!=cpuCount; ++i)
taskLanes[i]->write_end();
threadGroup.join_all();
for(size_t i=0; i!=cpuCount; ++i)
{
delete taskLanes[i];
delete resultLanes[i];
}
std::cout << "Stopped on peak " << peakNormalized << '\n';
reachedStopGain = fabs(peakNormalized) <= stopGainThreshold*thresholdBias;
for(size_t i=0; i!=scaledPsfs.size(); ++i)
allocator.Free(scaledPsfs[i]);
MakeShapeFunction(currentScale * rescaleFactor, shape, kernelSize);
memset(kernelImage, 0, sizeof(double) * _rescaledWidth * _rescaledHeight);
FFTConvolver::PrepareSmallKernel(kernelImage, _rescaledWidth, _rescaledHeight, shape.data(), kernelSize);
double* convolvedModel = allocator.Allocate(_originalWidth * _originalHeight);
double* preparedPsf = allocator.Allocate(_originalWidth * _originalHeight);
FFTResampler modelResampler(_rescaledWidth, _rescaledHeight, _originalWidth, _originalHeight, cpuCount, false);
for(size_t i=0; i!=currentScaleModel.ImageCount(); ++i)
{
FFTConvolver::ConvolveSameSize(currentScaleModel.GetImage(i), kernelImage, _rescaledWidth, _rescaledHeight);
//writer.SetImageDimensions(_rescaledWidth, _rescaledHeight);
//writer.Write("multiscale-model-small.fits", currentScaleModel.GetImage(i));
modelResampler.RunSingle(currentScaleModel.GetImage(i), convolvedModel);
double *modelPtr = convolvedModel;
double *dest = _modelImage->GetImage(i), *destEnd = dest + _originalWidth*_originalHeight;
while(dest != destEnd) {
*dest += *modelPtr;
++modelPtr;
++dest;
}
FFTConvolver::PrepareKernel(preparedPsf, (*_originalPsfs)[_modelImage->PSFIndex(i)], _originalWidth, _originalHeight);
FFTConvolver::ConvolveSameSize(convolvedModel, preparedPsf, _originalWidth, _originalHeight);
dest = _dataImageOriginal->GetImage(i);
destEnd = dest + _originalWidth*_originalHeight;
modelPtr = convolvedModel;
while(dest != destEnd) {
*dest -= *modelPtr;
++modelPtr;
++dest;
}
}
allocator.Free(preparedPsf);
allocator.Free(convolvedModel);
allocator.Free(kernelImage);
this->_subtractionGain = oldSubtractionGain;
}
int main(){
vector<int> A = {1, 2, 1, 3, 4, 5, 7, 6};
cout<<findPeak(A)<<endl;
return 0;
}
/* Start of main progam */
int main(int argc, char *argv[])
{
char szOut[255], szImg1[255], szImg2[255], *maskFile;
int x1, x2, y1, y2;
int goodPoints=0, attemptedPoints=0;
FILE *fp_output;
meta_parameters *masterMeta, *slaveMeta;
int logflag=FALSE, ampFlag=TRUE, currArg=1;
while (currArg < (argc-NUM_ARGS)) {
char *key = argv[currArg++];
if (strmatches(key,"-log","--log",NULL)) {
CHECK_ARG(1);
strcpy(logFile,GET_ARG(1));
fLog = FOPEN(logFile, "a");
logflag = TRUE;
}
else if (strmatches(key,"-mask","--mask",NULL)) {
CHECK_ARG(1);
maskFile = GET_ARG(1);
}
else {
printf("\n**Invalid option: %s\n", argv[currArg-1]);
usage(argv[0]);
}
}
if ((argc-currArg) < NUM_ARGS) {
printf("Insufficient arguments.\n");
usage(argv[0]);
}
// Fetch required arguments
strcpy(szImg1,argv[argc - 3]);
strcpy(szImg2,argv[argc - 2]);
strcpy(szOut, argv[argc - 1]);
/* Read metadata */
masterMeta = meta_read(szImg1);
slaveMeta = meta_read(szImg2);
if (masterMeta->general->line_count != slaveMeta->general->line_count ||
masterMeta->general->sample_count != slaveMeta->general->sample_count)
asfPrintWarning("Input images have different dimension!\n");
else if (masterMeta->general->data_type != slaveMeta->general->data_type)
asfPrintError("Input image have different data type!\n");
else if (masterMeta->general->data_type > 5 &&
masterMeta->general->data_type != COMPLEX_REAL32)
asfPrintError("Cannot compare raw images for offsets!\n");
lines = masterMeta->general->line_count;
samples = masterMeta->general->sample_count;
if (masterMeta->general->data_type == COMPLEX_REAL32) {
srcSize = 32;
ampFlag = FALSE;
cZero = Czero();
}
/* Create output file */
fp_output=FOPEN(szOut, "w");
/* Loop over grid, performing forward and backward correlations */
while (getNextPoint(&x1,&y1,&x2,&y2))
{
float dx=0.0, dy=0.0, snr=0.0, dxFW, dyFW, snrFW, dxBW, dyBW, snrBW;
attemptedPoints++;
// Check bounds and mask
if (!(outOfBounds(x1, y1, srcSize, maskFile)))
{
/* ...check forward correlation... */
if (ampFlag) {
if (!(findPeak(x1,y1,szImg1,x2,y2,szImg2,&dxFW,&dyFW,&snrFW))) {
attemptedPoints--;
continue; /* next point if chip in complete background fill */
}
}
else {
getPeak(x1,y1,szImg1,x2,y2,szImg2,&dxFW,&dyFW,&snrFW);
}
if ((!ampFlag && snrFW>minSNR) || (ampFlag)) {
/* ...check backward correlation... */
if (ampFlag) {
if (!(findPeak(x2,y2,szImg2,x1,y1,szImg1,&dxBW,&dyBW,&snrBW))) {
attemptedPoints--;
continue; /* next point if chip in complete background fill */
printf("dxFW: %.2f, dyFW: %.2f\n", dxFW, dyFW);
}
}
else {
getPeak(x2,y2,szImg2,x1,y1,szImg1,&dxBW,&dyBW,&snrBW);
}
dxBW*=-1.0;dyBW*=-1.0;
if (((!ampFlag && snrFW>minSNR) || (ampFlag)) &&
(fabs(dxFW-dxBW) < maxDisp) &&
(fabs(dyFW-dyBW) < maxDisp))
{
dx = (dxFW+dxBW)/2;
dy = (dyFW+dyBW)/2;
snr = snrFW*snrBW;
if (dx < maxDxDy && dy < maxDxDy) goodPoints++;
}
}
fprintf(fp_output,"%6d %6d %8.5f %8.5f %4.2f\n",
x1, y1, x2+dx, y2+dy, snr);
fflush(fp_output);
}
}
if (goodPoints < attemptedPoints)
printf("\n WARNING: %i out of %i points moved by "
"more than one pixel!\n\n",
(attemptedPoints-goodPoints), attemptedPoints);
else
printf("\n There is no difference between the images\n\n");
FCLOSE(fp_output);
FREE(masterMeta);
FREE(slaveMeta);
return(0);
}
bool PeakPicker::process( const vector< float > & vfMS2TimeInput,
const vector< float > & vfRetentionTimeInput,
vector< double > & vdTreatmentChroInput,
vector< double > & vdReferenceChroInput
)
{
iChroLength = vfRetentionTimeInput.size();
if ( iChroLength <= ProRataConfig::getPeakPickerWindowSize() )
{
cout << "ERROR! The input chromatograms have too few MS1 scans!" << endl;
return false;
}
if( vdTreatmentChroInput.size() != iChroLength || vdReferenceChroInput.size() != iChroLength )
{
cout << "ERROR! the input chromatograms are in different length!" << endl;
return false;
}
if ( ( ProRataConfig::getPeakPickerWindowSize() % 2) == 0 )
{
cout << "ERROR! The window size for Sav-Gol smoothing has to be odd! " << endl;
return false;
}
if ( ProRataConfig::getPeakPickerWindowSize() < 3 )
{
cout << "ERROR! The window size for Sav-Gol smoothing is too small! " << endl;
return false;
}
vfRetentionTime = vfRetentionTimeInput;
// set the earliest MS2 time and the last MS2 scan time
// used for initialize left valley and right valley
fLeftMS2Time = *( min_element( vfMS2TimeInput.begin(), vfMS2TimeInput.end() ) );
fRightMS2Time = *( max_element( vfMS2TimeInput.begin(), vfMS2TimeInput.end() ) );
// the fLeftMS2Time and fRightMS2Time have to be within the RT range
if( fLeftMS2Time < vfRetentionTime.front() )
fLeftMS2Time = vfRetentionTime.front();
if( fRightMS2Time > vfRetentionTime.back() )
fRightMS2Time = vfRetentionTime.back();
if( (ProRataConfig::getLeftPeakShift() < 0.001) && (ProRataConfig::getRightPeakShift() < 0.001) )
{
iNumberofScansShifted = 0;
// compute the final vdCovarianceChro
computeCovarianceChro( iNumberofScansShifted, vdTreatmentChroInput, vdReferenceChroInput );
// compute the final peak
findPeak();
return true;
}
/*
* detect peak shift
*/
int i;
// the calcuated peak height in PPC for all tested peak shift
// vector< double > vdPeakHeight;
// vector< int > viScanShift;
map< int, double > mScanShift2Height;
// scans that shifts left is negative and scans that shifts right is positive
for( i = 0; i < vfRetentionTime.size() - 3; i++ )
{
if( (vfRetentionTime[i] - vfRetentionTime[0]) >= ProRataConfig::getLeftPeakShift() - 0.001)
break;
}
int iScanShiftLeft = -i;
for( i = (vfRetentionTime.size() - 1); i > 2; i-- )
{
if( (vfRetentionTime.back() - vfRetentionTime[i]) >= ProRataConfig::getRightPeakShift() - 0.001)
break;
}
int iScanShiftRight = vfRetentionTime.size() - i - 1;
double dMaxPeakHeight = -100;
for( i = iScanShiftLeft; i < ( iScanShiftRight + 1 ); ++i )
{
// viScanShift.push_back( i );
computeCovarianceChro( i, vdTreatmentChroInput, vdReferenceChroInput );
findPeak();
mScanShift2Height[i] = dPeakHeightPPC;
if( dPeakHeightPPC > dMaxPeakHeight )
dMaxPeakHeight = dPeakHeightPPC;
// vdPeakHeight.push_back( dPeakHeightPPC );
}
if( mScanShift2Height[ 0 ] > dMaxPeakHeight*0.9 )
{
iNumberofScansShifted = 0;
}
else
{
iNumberofScansShifted = 0;
bool bIsMaxFound = false;
if( abs( iScanShiftLeft ) > iScanShiftRight )
{
for( i = 0; i > ( iScanShiftLeft - 1 ); --i )
{
if( mScanShift2Height[i] > dMaxPeakHeight*0.95 )
{
iNumberofScansShifted = i;
bIsMaxFound = true;
break;
}
}
if( !bIsMaxFound )
{
for( i = 0; i < iScanShiftRight + 1 ; ++i )
{
if( mScanShift2Height[i] > dMaxPeakHeight*0.95 )
{
iNumberofScansShifted = i;
break;
}
}
}
}
else
{
for( i = 0; i < iScanShiftRight + 1 ; ++i )
{
if( mScanShift2Height[i] > dMaxPeakHeight*0.95 )
{
iNumberofScansShifted = i;
bIsMaxFound = true;
break;
}
}
if( !bIsMaxFound )
{
for( i = 0; i > ( iScanShiftLeft - 1 ); --i )
{
if( mScanShift2Height[i] > dMaxPeakHeight*0.95 )
{
iNumberofScansShifted = i;
break;
}
}
}
}
}
// compute the final vdCovarianceChro
computeCovarianceChro( iNumberofScansShifted, vdTreatmentChroInput, vdReferenceChroInput );
// compute the final peak
findPeak();
// actually change the input vdReferenceChroInput
shiftChro( iNumberofScansShifted, vdReferenceChroInput );
// cout << "bPeakValidity = " << boolalpha << bPeakValidity << endl;
return true;
}
void CorrelationUGenInternal::processBlock(bool& shouldDelete, const unsigned int blockID, const int channel) throw()
{
const int blockSize = uGenOutput.getBlockSize();
int numSamplesToProcess = blockSize;
float* inputASamples = inputs[InputA].processBlock(shouldDelete, blockID, channel);
float* inputBSamples = inputs[InputB].processBlock(shouldDelete, blockID, channel);
float* outputSamples = uGenOutput.getSampleData();
float* const windowsSamples = window.getDataUnchecked(0);
float* const scoreSamples = score.getDataUnchecked(0);
float* const bufferASamples = buffers.getDataUnchecked(InputBufferA);
float* const bufferBSamples = buffers.getDataUnchecked(InputBufferB);
float* const outputBufferSamples = buffers.getDataUnchecked(OutputBuffer);
while(numSamplesToProcess > 0)
{
int bufferSamplesToProcess = length_ - bufferIndex;
if(bufferSamplesToProcess > numSamplesToProcess)
{
// buffer the inputs
memcpy(bufferASamples + bufferIndex, inputASamples, numSamplesToProcess * sizeof(float));
memcpy(bufferBSamples + bufferIndex, inputBSamples, numSamplesToProcess * sizeof(float));
bufferIndex += numSamplesToProcess;
inputASamples += numSamplesToProcess;
inputBSamples += numSamplesToProcess;
// ...and the output - output the lockedIndexOfMax into the outputSamples
outputIndex(outputSamples, numSamplesToProcess);
// outputBuffer(outputSamples, numSamplesToProcess);
// outputScore(outputSamples, numSamplesToProcess);
outputSamples += numSamplesToProcess;
numSamplesToProcess = 0;
}
else
{
numSamplesToProcess -= bufferSamplesToProcess;
memcpy(bufferASamples + bufferIndex, inputASamples, bufferSamplesToProcess * sizeof(float));
memcpy(bufferBSamples + bufferIndex, inputBSamples, bufferSamplesToProcess * sizeof(float));
memset(outputBufferSamples, 0, (length_ + length_) * sizeof(float));
//apply windows
for (int i = 0; i < length_; i++)
{
bufferASamples[i] *= windowsSamples[i];
bufferBSamples[i] *= windowsSamples[i];
}
bufferIndex += bufferSamplesToProcess;
inputASamples += bufferSamplesToProcess;
inputBSamples += bufferSamplesToProcess;
vDSP_conv (bufferASamples, 1,
bufferBSamples, 1,
outputBufferSamples, 1,
length_, length_);
for (int i = 0; i < length_; i++)
scoreSamples[i] *= 0.9f;
indexOfMax = findPeak(outputBufferSamples, length_);
if ((indexOfMax >= 0) && (indexOfMax < length_))
{
if (lockedIndexOfMax >= 0)
{
int diff = indexOfMax - lockedIndexOfMax;
if (diff < 0)
diff = -diff;
int maximum = length_ / 4;
diff = ugen::min(diff, maximum);
int score = maximum - diff;
float fScore = (float)score / maximum;
fScore = ugen::cubed(fScore);
scoreSamples[indexOfMax] += fScore;
}
else
{
scoreSamples[indexOfMax] += 1.f;
}
}
lockedIndexOfMax = findPeak(scoreSamples, length_);
// output the lockedIndexOfMax into the outputSamples
outputIndex(outputSamples, bufferSamplesToProcess);
// outputBuffer(outputSamples, bufferSamplesToProcess);
// outputScore(outputSamples, bufferSamplesToProcess);
outputSamples += bufferSamplesToProcess;
bufferSamplesToProcess = 0;
bufferIndex = 0;
}
}
}
int main(int argc, char *argv[])
{
char szImg[255], szImage[255], buffer[1000], crID[10], szCrList[255], szOut[255];
int ii, kk, size, bigSize=oversampling_factor*srcSize;
int mainlobe_azimuth_min, mainlobe_azimuth_max, mainlobe_range_min;
int mainlobe_range_max, sidelobe_azimuth_min, sidelobe_azimuth_max;
int sidelobe_range_min, sidelobe_range_max, peak_line, peak_sample;
float azimuth_processing_bandwidth, chirp_rate, pulse_duration, sampling_rate;
float prf, srcPeakX, srcPeakY, bigPeakX, bigPeakY, clutter_power, peak_power, scr;
float azimuth_resolution, range_resolution, azimuth_pslr, range_pslr;
float azimuth_window_size, range_window_size;
float azimuth_profile[bigSize], range_profile[bigSize];
static complexFloat *s, *t;
double lat, lon, elev, posX, posY, look_angle;
FILE *fpIn, *fpOut, *fp, *fpText;
meta_parameters *meta, *meta_debug;
float *original_amplitude, *amplitude, *phase;
fcpx *src_fft, *trg_fft;
int debug=FALSE;
char *text=NULL;
int overwrite=FALSE;
if (argc==1) usage();
if (strcmp(argv[1],"-help")==0) help_page(); /* exits program */
if (strcmp(argv[1],"-overwrite")==0) overwrite=TRUE;
int required_args = 4;
if (overwrite) ++required_args;
if(argc != required_args)
usage();/*This exits with a failure*/
/* Fetch required arguments */
strcpy(szImg, argv[argc - 3]);
strcpy(szCrList,argv[argc - 2]);
strcpy(szOut,argv[argc - 1]);
/* DEFAULT VALUES:
size of region to oversample - 64 pixels
mainlobe width factor - 2.6
sidelobe width factor - 20.0
maximum oversampling factor - 8
*/
// Read metadata
sprintf(szImage, "%s.img", szImg);
meta = meta_read(szImage);
lines = meta->general->line_count;
samples = meta->general->sample_count;
text = (char *) MALLOC(255*sizeof(char));
// Handle input and output file
fpIn = FOPEN(szCrList, "r");
fpOut = FOPEN(szOut, "w");
fprintf(fpOut, "POINT TARGET ANALYSIS RESULTS\n\n");
fprintf(fpOut, "CR\tLat\tLon\tElev\tAz peak\tRng peak\tLook\t"
"Az res\tRng res\tAz PSLR\tRng PSLR\tSCR\n");
// RCS needs some more coding
// Loop through corner reflector location file
while (fgets(buffer, 1000, fpIn))
{
if (overwrite) {
sscanf(buffer, "%s\t%lf\t%lf", crID, &posY, &posX);
printf(" %s: posX = %.2lf, posY = %.2lf\n", crID, posX, posY);
}
else {
sscanf(buffer, "%s\t%lf\t%lf\t%lf", crID, &lat, &lon, &elev);
meta_get_lineSamp(meta, lat, lon, elev, &posY, &posX);
printf(" %s: lat = %.4lf, lon = %.4lf, posX = %.2lf, posY = %.2lf\n",
crID, lat, lon, posX, posY);
}
// Check bounds - Get average spectra from chip in range direction
if (!(outOfBounds(posX, posY, srcSize)))
{
// READ SUBSET FROM THE IMAGE WITH CORNER REFLECTOR IN THE CENTER
size = srcSize*srcSize*sizeof(float);
original_amplitude = (float *) MALLOC(size);
phase = (float *) MALLOC(size);
s = (complexFloat *) MALLOC(2*size);
readComplexSubset(szImage, srcSize, srcSize, posX-srcSize/2,
posY-srcSize/2, s);
my_complex2polar(s, srcSize, srcSize, original_amplitude, phase);
if (debug) { // Store original image for debugging
fp = FOPEN("original.img", "wb");
size = bigSize*bigSize*sizeof(float);
FWRITE(original_amplitude, size, 1, fp);
FCLOSE(fp);
meta_debug = meta_init(szImage);
meta_debug->general->line_count =
meta_debug->general->sample_count = srcSize;
meta_debug->general->data_type = REAL32;
meta_debug->general->start_line = posY-srcSize/2;
meta_debug->general->start_sample = posX-srcSize/2;
meta_debug->general->center_latitude = lat;
meta_debug->general->center_longitude = lon;
meta_write(meta_debug, "original.meta");
meta_free(meta_debug);
}
// Find amplitude peak in original image chip
if (!findPeak(original_amplitude, srcSize, &srcPeakX, &srcPeakY)) {
fprintf(fpOut,
" Could not find amplitude peak in original image chip!\n");
goto SKIP;
}
// Cut out the subset again around the peak to make sure we have data for
// the analysis
readComplexSubset(szImage, srcSize, srcSize, posX-srcSize+srcPeakY,
posY-srcSize+srcPeakX, s);
my_complex2polar(s, srcSize, srcSize, original_amplitude, phase);
FREE(phase);
findPeak(original_amplitude, srcSize, &srcPeakX, &srcPeakY);
// Determine look angle
look_angle =
meta_look(meta, srcSize/2, srcSize/2);
/****************************
- special ScanSAR case: images are "projected" - need to be rotated back to
allow analysis in azimuth and range direction (ss_extract.c)
*********************/
// BASEBAND THE DATA IN EACH DIMENSION IN THE FREQUENCY DOMAIN
// Oversample image
src_fft = forward_fft(s, srcSize, srcSize);
trg_fft = oversample(src_fft, srcSize, oversampling_factor);
// Determine azimuth and range window size
azimuth_processing_bandwidth =
(float) meta->sar->azimuth_processing_bandwidth;
prf = (float) meta->sar->prf;
chirp_rate = (float) meta->sar->chirp_rate;
pulse_duration = (float) meta->sar->pulse_duration;
sampling_rate = (float) meta->sar->range_sampling_rate;
azimuth_window_size = azimuth_processing_bandwidth / prf;
range_window_size = fabs(chirp_rate) * pulse_duration / sampling_rate;
printf("azimuth window size: %.2f, range window size: %.2f\n",
azimuth_window_size, range_window_size);
asfRequire(azimuth_window_size > 0.0 && azimuth_window_size < 1.0,
"azimuth window size out of range (0 to 1)!\n");
asfRequire(range_window_size > 0.0 && range_window_size < 1.0,
"range window size out of range (0 to 1)!\n");
if (range_window_size < 0.5)
range_window_size = 0.5;
// for ScanSAR both 0.5
// run debugger to check units are correct!
// Baseband image in range direction
//baseband(src_fft, range_window_size);
/*
// Transpose matrix to work in azimuth direction
//transpose(s);
// Baseband image in azimuth direction
// baseband(s, azimuth_window_size);
// Transpose matrix back into original orientation
//transpose(s);
*/
t = inverse_fft(trg_fft, bigSize, bigSize);
amplitude = (float *) MALLOC(sizeof(float)*bigSize*bigSize);
phase = (float *) MALLOC(sizeof(float)*bigSize*bigSize);
my_complex2polar(t, bigSize, bigSize, amplitude, phase);
FREE(phase);
if (debug) { // Store oversampled image for debugging
fp = FOPEN("oversample.img", "wb");
size = bigSize*bigSize*sizeof(float);
FWRITE(amplitude, size, 1, fp);
FCLOSE(fp);
meta_debug = meta_init("oversample.meta");
meta_debug->general->line_count =
meta_debug->general->sample_count = bigSize;
meta_debug->general->data_type = REAL32;
meta_write(meta_debug, "oversample.meta");
meta_free(meta_debug);
}
// Find the amplitude peak in oversampled image
if (!findPeak(amplitude, bigSize, &bigPeakX, &bigPeakY)) {
fprintf(fpOut,
" Could not find amplitude peak in oversampled image chip!\n");
goto SKIP;
}
peak_line = (int)(bigPeakX + 0.5);
peak_sample = (int)(bigPeakY + 0.5);
// Write text version of oversampled image
sprintf(text, "%s_%s_chip.txt", szImg, crID);
fpText = FOPEN(text, "w");
for (ii=peak_line-32; ii<peak_line+32; ii++) {
for (kk=peak_sample-32; kk<peak_sample+32; kk++)
fprintf(fpText, "%12.4f\t", amplitude[ii*bigSize+kk]);
fprintf(fpText, "\n");
}
FCLOSE(fpText);
// EXTRACTING PROFILES IN AZIMUTH AND RANGE THROUGH PEAK
for (ii=0; ii<bigSize; ii++) {
azimuth_profile[ii] = amplitude[ii*bigSize+peak_sample];
range_profile[ii] = amplitude[bigSize*peak_line+ii];
}
sprintf(text, "%s_%s_azimuth.txt", szImg, crID);
fp = FOPEN(text, "w");
fprintf(fp, "Azimuth profile\n");
for (ii=0; ii<bigSize; ii++)
fprintf(fp, "%.3f\n", azimuth_profile[ii]);
FCLOSE(fp);
sprintf(text, "%s_%s_range.txt", szImg, crID);
fp = FOPEN(text, "w");
fprintf(fp, "Range profile\n");
for (ii=0; ii<bigSize; ii++)
fprintf(fp, "%.3f\n", range_profile[ii]);
FCLOSE(fp);
// FINALLY GET TO THE IMAGE QUALITY PARAMETERS
clutter_power = 0.0;
// Find main lobes in oversampled image
if (!find_mainlobe(amplitude, azimuth_profile, bigSize, peak_line,
clutter_power, &mainlobe_azimuth_min,
&mainlobe_azimuth_max)) {
fprintf(fpOut, " No mainlobes could be found for %s in azimuth!\n",
crID);
goto SKIP;
}
//printf("mainlobe azimuth: min = %d, max = %d\n",
// mainlobe_azimuth_min, mainlobe_azimuth_max);
if (!find_mainlobe(amplitude, range_profile, bigSize, peak_sample,
clutter_power, &mainlobe_range_min,
&mainlobe_range_max)) {
fprintf(fpOut, " No mainlobes could be found for %s in range!\n", crID);
goto SKIP;
}
//printf("mainlobe range: min = %d, max = %d\n",
// mainlobe_range_min, mainlobe_range_max);
// Calculate resolution in azimuth and range for profiles
if (!calc_resolution(azimuth_profile, mainlobe_azimuth_min,
mainlobe_azimuth_max, peak_line,
meta->general->y_pixel_size, clutter_power,
&azimuth_resolution))
fprintf(fpOut, " Negative azimuth resolution for %s - invalid result!"
"\n", crID);
//printf("azimuth resolution = %.2f\n", azimuth_resolution);
if (!calc_resolution(range_profile, mainlobe_range_min,
mainlobe_range_max, peak_sample,
meta->general->x_pixel_size, clutter_power,
&range_resolution))
fprintf(fpOut, " Negative range resolution for %s - invalid result!\n",
crID);
//printf("range resolution = %.2f\n", range_resolution);
// Find peak of original data - thought we had that already: check !!!
// Calculate the clutter power
azimuth_resolution /= meta->general->x_pixel_size;
range_resolution /= meta->general->y_pixel_size;
clutter_power =
calc_clutter_power(original_amplitude, srcSize, peak_sample, peak_line,
azimuth_resolution, range_resolution);
//printf(" Clutter power: %8.3f\n", clutter_power);
// Calculate resolution in azimuth and range with estimated clutter power
if (!calc_resolution(azimuth_profile, mainlobe_azimuth_min,
mainlobe_azimuth_max, peak_line,
meta->general->y_pixel_size, clutter_power,
&azimuth_resolution))
fprintf(fpOut, " Negative azimuth resolution for %s - invalid result!"
"\n", crID);
if (!calc_resolution(range_profile, mainlobe_range_min,
mainlobe_range_max, peak_sample,
meta->general->x_pixel_size, clutter_power,
&range_resolution))
fprintf(fpOut, " Negative range resolution for %s - invalid result!\n",
crID);
//printf(" Azimuth resolution: %.3f\n", azimuth_resolution);
//printf(" Range resolution: %.3f\n", range_resolution);
// Find sidelobes in oversampled image and calculate the point-to-sidelobe
// ratio in azimuth and range direction
if (find_sidelobe(azimuth_profile, bigSize, 1, peak_line,
mainlobe_azimuth_max, &sidelobe_azimuth_max) &&
find_sidelobe(azimuth_profile, bigSize, -1, peak_line,
mainlobe_azimuth_min, &sidelobe_azimuth_min)) {
if (!calc_pslr(azimuth_profile, bigSize, peak_line, sidelobe_azimuth_min,
sidelobe_azimuth_max, &azimuth_pslr))
//printf(" Azimuth PSLR: %.3f\n", azimuth_pslr);
//printf(" No valid PSLR in azimuth could be determined!\n");
;
}
else {
fprintf(fpOut, " Problem in finding sidelobes for %s in azimuth - "
"invalid PSLR!\n", crID);
}
if (find_sidelobe(range_profile, bigSize, 1, peak_sample,
mainlobe_range_max, &sidelobe_range_max) &&
find_sidelobe(range_profile, bigSize, -1, peak_sample,
mainlobe_range_min, &sidelobe_range_min)) {
if (!calc_pslr(range_profile, bigSize, peak_sample, sidelobe_range_min,
sidelobe_range_max, &range_pslr))
//printf(" Range PSLR: %.3f\n", range_pslr);
//printf(" No valid PSLR in range could be determined!\n");
;
}
else {
fprintf(fpOut, " Problem in finding sidelobes for %s in range -"
" invalid PSLR!\n", crID);
}
//printf("sidelobe_azimuth: min = %d, max = %d\n",
// sidelobe_azimuth_min, sidelobe_azimuth_max);
//printf("sidelobe_range: min = %d, max = %d\n",
// sidelobe_range_min, sidelobe_range_max);
// Calculate the signal-to-clutter ratio (SCR)
peak_power = amplitude[peak_line*bigSize+peak_sample] *
amplitude[peak_line*bigSize+peak_sample];
if (clutter_power>0 && peak_power>clutter_power)
scr = 10 * log((peak_power - clutter_power)/clutter_power);
else
scr = 0.0;
if (peak_power > 0.0) {
peak_power = 10 * log(peak_power);
//printf(" Peak power: %.3f\n", peak_power);
//printf(" SCR: %.3f\n", scr);
}
else
fprintf(fpOut, " Negative peak power - invalid result!\n");
FREE(amplitude);
FREE(original_amplitude);
// Write values in output files
fprintf(fpOut, "%s\t%.4lf\t%.4lf\t%.1lf\t%.1lf\t%.1f\t%.3f\t"
"%.3f\t%.3f\t%.3f\t%.3f\t%.3f\n",
crID, lat, lon, elev, posX-srcSize+srcPeakY, posY-srcSize+srcPeakX,
look_angle*R2D, azimuth_resolution, range_resolution, azimuth_pslr,
range_pslr, scr);
SKIP: continue;
}
else
fprintf(fpOut, "\n WARNING: Target %s outside the image boundaries!\n",
crID);
}
FCLOSE(fpIn);
FCLOSE(fpOut);
FREE(meta);
return(0);
}