void syncTest() {
using namespace FCam::F2;
using namespace std;
printf("syncTest: Testing basic frame-level control\n"
"-------------------------------------------\n");
// Initialize a sensor
Sensor sensor;
unsigned int n = 10;
// Create a n-image burst with one image with different parameters
Burst testShots(1);
testShots[0].exposure = 1000;
testShots[0].gain = 10;
testShots[0].frameTime = 40000;
testShots[0].image = FCam::Image(640, 480, FCam::UYVY);
for (unsigned int i=1; i < n;i++) {
testShots.push_back(testShots[0]);
testShots[i].image = FCam::Image(640,480, FCam::UYVY);
if (i >= n/2) testShots[i].exposure = 20000; //25000;
}
testShots[n-1].exposure = 40000;
sensor.stream(testShots);
vector<vector<float> > lums(n);
vector<vector<float> > deltaT(n);
int testFrames = n*10;
FCam::Time prevTime = FCam::Time::now();
bool startup = true;
int startupIgnoreCount = 0; //n-1;
printf("* Capturing %d frames of a %d-shot burst\n", testFrames, n);
while (testFrames-- > 0) {
unsigned int index;
FCam::Frame::Ptr f = sensor.getFrame();
for (index=0; index<n ;index++ ) {
if (testShots[index].id == f->shot().id) break;
}
if (index == n) {
printf("Unknown frame returned! Something wrong in the shot cloning, perhaps?\n");
exit(0);
}
if (startupIgnoreCount-- == 0)
startup=false;
if (!startup) {
float dt = (f->processingDoneTime-prevTime) / 1000.;
printf("Frame %d: Time from previous frame: %.2f ms, supposed to be %.2f\n", index, dt,
f->frameTime/1000.);
deltaT[index].push_back(dt);
}
prevTime = f->processingDoneTime;
if (!f->image.valid()) {
printf(" Frame %d Came back with no image data!\n", index);
continue;
}
// Calculate some statistics
unsigned int totalY=0;
unsigned char *yPtr = f->image.data+1; // Offset to get to a Y
unsigned int count=0;
while (yPtr < f->image.data + 2*f->image.size.width*f->image.size.height) {
totalY+= *yPtr;
yPtr += 100;
count++;
}
lums[index].push_back( ((float)totalY)/count);
}
sensor.stopStreaming();
printf("Writing stats to syncTest.csv\n");
ofstream stats("syncTest.csv");
bool done = false;
unsigned int row = 0;
while (!done) {
int haveData=0;
for (unsigned int i=0;i < n; i++) {
if (row < lums[i].size()) {
stats << lums[i][row] << ", ";
haveData++;
} else {
stats << "-1 ,";
}
if (row < deltaT[i].size()) {
stats << deltaT[i][row];
haveData++;
} else {
stats << "-1";
}
if (i < n-1)
stats << " ,";
}
stats << endl;
if (haveData == 0) done = true;
row++;
}
stats.close();
printf("\n\n** Results (Y=sampled luminance per pixel, T=inter-frame time)\n\n");
// Calculate averages, stddevs
vector<float> avgsL(n), stddevsL(n), lowboundL(n), highboundL(n);
vector<float> avgsT(n), stddevsT(n), lowboundT(n), highboundT(n);
for (unsigned int i=0;i<n;i++) {
avgsL[i] = 0;
stddevsL[i] = 0;
for (unsigned int j=0;j < lums[i].size(); j++) {
avgsL[i] += lums[i][j];
}
avgsL[i] /= lums[i].size();
for (unsigned int j=0;j < lums[i].size(); j++) {
stddevsL[i] += (lums[i][j] - avgsL[i])*(lums[i][j] - avgsL[i]);
}
stddevsL[i] /= lums[i].size();
stddevsL[i] = sqrt(stddevsL[i]);
sort(lums[i].begin(), lums[i].end());
if (lums[i].size()>10) {
lowboundL[i] = lums[i][lums[i].size()/10];
highboundL[i] = lums[i][lums[i].size()*9/10];
} else {
lowboundL[i]=-1;
highboundL[i]=-1;
}
printf("Shot %d cnt %d, Lum: Avg: %.1f, Std: %.1f, 10%%: %f, 90%%: %f\n", i, lums[i].size(), avgsL[i], stddevsL[i], lowboundL[i], highboundL[i]);
}
printf("\n");
for (unsigned int i=0;i<n;i++) {
avgsT[i] = 0;
stddevsT[i] = 0;
for (unsigned int j=0;j < deltaT[i].size(); j++) {
avgsT[i] += deltaT[i][j];
}
avgsT[i] /= deltaT[i].size();
for (unsigned int j=0;j < deltaT[i].size(); j++) {
stddevsT[i] += (deltaT[i][j] - avgsT[i])*(deltaT[i][j] - avgsT[i]);
}
stddevsT[i] /= deltaT[i].size();
stddevsT[i] = sqrt(stddevsT[i]);
sort(deltaT[i].begin(), deltaT[i].end());
if (deltaT[i].size()>10){
lowboundT[i] = deltaT[i][deltaT[i].size()/10];
highboundT[i] = deltaT[i][deltaT[i].size()*9/10];
} else {
lowboundT[i] = -1;
highboundT[i] = -1;
}
printf("Shot %d, Interframe delay: Avg: %.3f ms, Std: %.2f us, 10%%: %.2f, 90%%: %.2f Exp: %.1f ms\n",
i, avgsT[i], stddevsT[i]*1000, lowboundT[i], highboundT[i], testShots[i].exposure/1000. );
}
printf("syncTest: Done\n"
"-------------------------------------------\n");
}
