void splitVerticalLineIntoDigits(IplImage *source, IplImage *array[9]) {
int countOfSquares = 0;
int start = 0;
int stop = 0;
int i = 0;
do {
double val = cvGet2D(source, i, source->width/2).val[0];
if (val == 0.0)
start = i;
i++;
} while (!start);
i = source->height-1;
do {
double val = cvGet2D(source, i, source->width/2).val[0];
if (val == 0.0)
stop = i;
i--;
} while (!stop);
int prevLineY = start;
for (int i = start ; i < stop; i++) {
if (i - prevLineY > (stop-start)/ 9) {
CvRect rect = cvRect(0, prevLineY, source->width, i - prevLineY);
prevLineY = i;
IplImage *resultImage = cvCreateImage(cvSize(rect.width, rect.height),IPL_DEPTH_8U,1);
GetSubImage(source, resultImage, rect);
array[countOfSquares++] = resultImage;
i+=2; //to avoid one-pixel black lines
}
CvRect rect = cvRect(0, prevLineY, source->width, stop - prevLineY);
IplImage *resultImage = cvCreateImage(cvSize(rect.width, rect.height),IPL_DEPTH_8U,1);
GetSubImage(source, resultImage, rect);
array[countOfSquares] = resultImage;
}
}
void splitSudokuIntoVerticalStripes(IplImage *source, IplImage *stripes[9]) {
IplImage *img_bw = cvCreateImage(cvGetSize(source),IPL_DEPTH_8U,1);
cvCvtColor(source, img_bw, CV_RGB2GRAY);
cvThreshold(img_bw, img_bw, 125, 0, CV_THRESH_TOZERO);
//IplImage *closedImage = closeImage(img_bw);
int cutThreshold = source->height * 0.3;
int averageRowWidth = source->width / 9 * 0.7;
int currentLineLength;
int countOfStripes = 0;
int start = 0;
for (int i = 0; i < source->width; i++) {
double val = cvGet2D(img_bw, 5, i).val[0];
if (val == 0.0) {
start = i; break;
}
}
if (start > source->width / 9) {
start = 0;
}
int prevLineX = start;
for (int i = start ; i < source->width; i++) {
currentLineLength = 0;
for (int j = 0 ; j < source->height; j++) {
double val = cvGet2D(img_bw, j, i).val[0];
if (val == 0.0) {
currentLineLength++;
}
}
int magicCropGap = 5;
if (currentLineLength >= cutThreshold) {
if (i - prevLineX < averageRowWidth) {
continue;
}
CvRect rect = cvRect(prevLineX + magicCropGap, 0, i - prevLineX - magicCropGap, source->height);
prevLineX = i;
IplImage *resultImage = cvCreateImage(cvSize(rect.width, rect.height),IPL_DEPTH_8U,1);
GetSubImage(img_bw, resultImage, rect);
stripes[countOfStripes++] = resultImage;
if (countOfStripes >= 9) {
return;
}
i+=2; //to avoid one-pixel black lines
}
}
}
IplImage* cropGarbageFromTopAndBottom(IplImage *source) {
IplImage *img_bw = cvCreateImage(cvGetSize(source),IPL_DEPTH_8U,1);
cvCvtColor(source, img_bw, CV_RGB2GRAY);
int startY = 0, stopY = source -> height;
//top
for (int i = 1 ; i < source->height / 2; i++) {
int lenghtsTop = 0;
for (int j = 0 ; j < source->width; j++) {
double val = cvGet2D(img_bw, i, j).val[0];
if (val == 0.0) {
lenghtsTop++;
}
}
if (lenghtsTop == 0) {
startY = i;
break;
}
}
//bottom
for (int i = source->height /2 ; i < source->height - 1; i++) {
int lenghtsBottom = 0;
for (int j = 0 ; j < source->width; j++) {
double val = cvGet2D(img_bw, i, j).val[0];
if (val == 0.0) {
lenghtsBottom++;
}
}
if (lenghtsBottom == 0) {
stopY = i + 1;
break;
}
}
CvRect rect = cvRect(0, startY, source->width, stopY - startY);
IplImage *cropped_dest = cvCreateImage(cvSize(rect.width, rect.height),IPL_DEPTH_8U,1);
GetSubImage(img_bw, cropped_dest, rect);
return cropped_dest;
}
void ezImage::AllocateImageData()
{
m_subImages.SetCount(m_uiNumMipLevels * m_uiNumFaces * m_uiNumArrayIndices);
int uiDataSize = 0;
bool bCompressed = ezImageFormat::GetType(m_format) == ezImageFormatType::BLOCK_COMPRESSED;
ezUInt32 uiBitsPerPixel = ezImageFormat::GetBitsPerPixel(m_format);
for (ezUInt32 uiArrayIndex = 0; uiArrayIndex < m_uiNumArrayIndices; uiArrayIndex++)
{
for (ezUInt32 uiFace = 0; uiFace < m_uiNumFaces; uiFace++)
{
for (ezUInt32 uiMipLevel = 0; uiMipLevel < m_uiNumMipLevels; uiMipLevel++)
{
SubImage& subImage = GetSubImage(uiMipLevel, uiFace, uiArrayIndex);
subImage.m_uiDataOffset = uiDataSize;
if (bCompressed)
{
ezUInt32 uiBlockSize = 4;
subImage.m_uiRowPitch = 0;
subImage.m_uiDepthPitch = GetNumBlocksX(uiMipLevel) * GetNumBlocksY(uiMipLevel) * uiBlockSize * uiBlockSize * uiBitsPerPixel / 8;
}
else
{
subImage.m_uiRowPitch = GetWidth(uiMipLevel) * uiBitsPerPixel / 8;
subImage.m_uiDepthPitch = GetHeight(uiMipLevel) * subImage.m_uiRowPitch;
}
uiDataSize += subImage.m_uiDepthPitch * GetDepth(uiMipLevel);
}
}
}
m_data.SetCount(uiDataSize + 16);
}
IplImage* cropImage(IplImage *source) {
int startY = 0, stopY = source -> height, startX = 0, stopX = source->width;
//top
for (int i = 1 ; i < source->height / 2; i++) {
int lenghtsTop = 0;
for (int j = 0 ; j < source->width; j++) {
double val = cvGet2D(source, i, j).val[0];
if (val == 0.0) {
lenghtsTop++;
}
}
if (lenghtsTop != 0) {
startY = i - 1;
break;
}
}
//
//bottom
for (int i = source->height - 2 ; i > source->height /2; i--) {
int lenghtsBottom = 0;
for (int j = 0 ; j < source->width; j++) {
double val = cvGet2D(source, i, j).val[0];
if (val == 0.0) {
lenghtsBottom++;
}
}
if (lenghtsBottom != 0) {
stopY = i + 1;
break;
}
}
//left
for (int i = 1 ; i < source->width / 2; i++) {
int lenghtsLeft = 0;
for (int j = 0 ; j < source->height; j++) {
double val = cvGet2D(source, j, i).val[0];
if (val == 0.0) {
lenghtsLeft++;
}
}
if (lenghtsLeft != 0) {
startX = i - 1;
break;
}
}
//right
for (int i = source->width - 3; i > source->width / 2; i--) {
int lenghtsRight = 0;
for (int j = 0 ; j < source->height; j++) {
double val = cvGet2D(source, j, i).val[0];
if (val == 0.0) {
lenghtsRight++;
}
}
if (lenghtsRight != 0) {
stopX = i + 1;
break;
}
}
CvRect rect = cvRect(startX, startY, stopX - startX, stopY - startY);
IplImage *cropped_dest = cvCreateImage(cvSize(rect.width, rect.height),IPL_DEPTH_8U,1);
GetSubImage(source, cropped_dest, rect);
return cropped_dest;
}