fc2Image是FlyCapture SDK的C语言库中的图片格式，由于在Windows上的MinGW无法编译FlyCapture2的C++库，只能使用C语言库，所以当我们在同时使用OpenCV的图像格式IplImage时，有时候就需要两种格式相互转换。如果需要FlyCapture2 Image和OpenCV IplImage之间的转换，可以参见我之前的博客OpenCV IplImage FlyCapture2 Image Conversion 两种图像类的相互转化。我们先来分别看看两种图像格式的定义：
IplImage:
typedef struct _IplImage
{
int nSize; /* sizeof(IplImage) */
int ID; /* version (=0)*/
int nChannels; /* Most of OpenCV functions support 1,2,3 or 4 channels */
int alphaChannel; /* Ignored by OpenCV */
int depth; /* Pixel depth in bits: IPL_DEPTH_8U, IPL_DEPTH_8S, IPL_DEPTH_16S,
IPL_DEPTH_32S, IPL_DEPTH_32F and IPL_DEPTH_64F are supported. */
char colorModel[]; /* Ignored by OpenCV */
char channelSeq[]; /* ditto */
int dataOrder; /* 0 - interleaved color channels, 1 - separate color channels.
cvCreateImage can only create interleaved images */
int origin; /* 0 - top-left origin,
1 - bottom-left origin (Windows bitmaps style). */
int align; /* Alignment of image rows (4 or 8).
OpenCV ignores it and uses widthStep instead. */
int width; /* Image width in pixels. */
int height; /* Image height in pixels. */
struct _IplROI *roi; /* Image ROI. If NULL, the whole image is selected. */
struct _IplImage *maskROI; /* Must be NULL. */
void *imageId; /* " " */
struct _IplTileInfo *tileInfo; /* " " */
int imageSize; /* Image data size in bytes
(==image->height*image->widthStep
in case of interleaved data)*/
char *imageData; /* Pointer to aligned image data. */
int widthStep; /* Size of aligned image row in bytes. */
int BorderMode[]; /* Ignored by OpenCV. */
int BorderConst[]; /* Ditto. */
char *imageDataOrigin; /* Pointer to very origin of image data
(not necessarily aligned) -
needed for correct deallocation */
}
IplImage;
fc2Image:
typedef struct _fc2Image
{
unsigned int rows;
unsigned int cols;
unsigned int stride;
unsigned char* pData;
unsigned int dataSize;
unsigned int receivedDataSize;
fc2PixelFormat format;
fc2BayerTileFormat bayerFormat; fc2ImageImpl imageImpl; } fc2Image;
下面我们来进行相互转换：
1. FlyCapture2 fc2Image OpenCV IplImage
/**
* Convert FlyCapture2 fc2Image to OpenCV IplImage type
*/
IplImage* ConvertFC2ImageToOpenCV(fc2Image* pImage)
{
IplImage* cvImage = NULL;
bool bColor = true;
CvSize mySize;
mySize.height = pImage->rows;
mySize.width = pImage->cols;
bool bInitialized = false;
fc2Image colorImage;
fc2Error error;
switch ( pImage->format )
{
case FC2_PIXEL_FORMAT_MONO8: cvImage = cvCreateImageHeader(mySize, , );
cvImage->depth = IPL_DEPTH_8U;
cvImage->nChannels = ;
bColor = false;
break;
case FC2_PIXEL_FORMAT_411YUV8: cvImage = cvCreateImageHeader(mySize, , );
cvImage->depth = IPL_DEPTH_8U;
cvImage->nChannels = ;
break;
case FC2_PIXEL_FORMAT_422YUV8: cvImage = cvCreateImageHeader(mySize, , );
cvImage->depth = IPL_DEPTH_8U;
cvImage->nChannels = ;
break;
case FC2_PIXEL_FORMAT_444YUV8: cvImage = cvCreateImageHeader(mySize, , );
cvImage->depth = IPL_DEPTH_8U;
cvImage->nChannels = ;
break;
case FC2_PIXEL_FORMAT_RGB8: cvImage = cvCreateImageHeader(mySize, , );
cvImage->depth = IPL_DEPTH_8U;
cvImage->nChannels = ;
break;
case FC2_PIXEL_FORMAT_MONO16: cvImage = cvCreateImageHeader(mySize, , );
cvImage->depth = IPL_DEPTH_16U;
cvImage->nChannels = ;
bColor = false;
break;
case FC2_PIXEL_FORMAT_RGB16: cvImage = cvCreateImageHeader(mySize, , );
cvImage->depth = IPL_DEPTH_16U;
cvImage->nChannels = ;
break;
case FC2_PIXEL_FORMAT_S_MONO16: cvImage = cvCreateImageHeader(mySize, , );
cvImage->depth = IPL_DEPTH_16U;
cvImage->nChannels = ;
bColor = false;
break;
case FC2_PIXEL_FORMAT_S_RGB16: cvImage = cvCreateImageHeader(mySize, , );
cvImage->depth = IPL_DEPTH_16U;
cvImage->nChannels = ;
break;
case FC2_PIXEL_FORMAT_RAW8: cvImage = cvCreateImageHeader(mySize, , );
cvImage->depth = IPL_DEPTH_8U;
cvImage->nChannels = ;
break;
case FC2_PIXEL_FORMAT_RAW16: cvImage = cvCreateImageHeader(mySize, , );
cvImage->depth = IPL_DEPTH_8U;
cvImage->nChannels = ;
break;
case FC2_PIXEL_FORMAT_MONO12: printf("Not supported by OpenCV");
bColor = false;
break;
case FC2_PIXEL_FORMAT_RAW12: printf("Not supported by OpenCV");
break;
case FC2_PIXEL_FORMAT_BGR: cvImage = cvCreateImageHeader(mySize, , );
cvImage->depth = IPL_DEPTH_8U;
cvImage->nChannels = ;
break;
case FC2_PIXEL_FORMAT_BGRU: cvImage = cvCreateImageHeader(mySize, , );
cvImage->depth = IPL_DEPTH_8U;
cvImage->nChannels = ;
break;
case FC2_PIXEL_FORMAT_RGBU: cvImage = cvCreateImageHeader(mySize, , );
cvImage->depth = IPL_DEPTH_8U;
cvImage->nChannels = ;
break;
default: printf("Some error occured...\n");
return NULL;
} if(bColor) {
error = fc2CreateImage( &colorImage );
if ( error != FC2_ERROR_OK )
{
printf( "Error in fc2CreateImage: %d\n", error );
}
if(!bInitialized)
{
fc2SetImageData(&colorImage, (unsigned char*)malloc(sizeof(int) * pImage->cols * pImage->rows*), pImage->cols * pImage->rows*);
bInitialized = true;
}
fc2ConvertImageTo(FC2_PIXEL_FORMAT_BGR, pImage, &colorImage); //needs to be as BGR to be saved
if ( error != FC2_ERROR_OK )
{
printf( "Error in fc2ConvertImageTo: %d\n", error );
}
cvImage->width = colorImage.cols;
cvImage->height = colorImage.rows;
cvImage->widthStep = colorImage.stride;
cvImage->origin = ; //interleaved color channels
cvImage->imageDataOrigin = (char*)colorImage.pData; //DataOrigin and Data same pointer, no ROI
cvImage->imageData = (char*)(colorImage.pData);
cvImage->widthStep = colorImage.stride;
cvImage->nSize = sizeof (IplImage);
cvImage->imageSize = cvImage->height * cvImage->widthStep;
error = fc2DestroyImage(&colorImage);
if ( error != FC2_ERROR_OK )
{
printf( "Error in fc2CreateImaged: %d\n", error );
return -;
}
}
else
{
cvImage->imageDataOrigin = (char*)(pImage->pData);
cvImage->imageData = (char*)(pImage->pData);
cvImage->widthStep = pImage->stride;
cvImage->nSize = sizeof (IplImage);
cvImage->imageSize = cvImage->height * cvImage->widthStep;
}
return cvImage;
}
2. OpenCV IplImage to FlyCapture2 fc2Image
/**
* Convert OpenCV IplImage to FlyCapture2 fc2Image type
*/
fc2Image* ConvertIplImageToFC2Image(IplImage* cvImage)
{
fc2Image* pImage;
fc2Error error;
fc2BayerTileFormat btf = FC2_BT_GBRG;
error = fc2CreateImage(pImage);
if ( error != FC2_ERROR_OK )
{
printf( "Error in fc2CreateImage: %d\n", error );
}
if (cvImage->depth == IPL_DEPTH_8U) {
if (cvImage->nChannels == ) error = fc2SetImageDimensions(pImage, cvImage->height, cvImage->width, cvImage->widthStep, FC2_PIXEL_FORMAT_MONO8, btf);
if (cvImage->nChannels == ) error = fc2SetImageDimensions(pImage, cvImage->height, cvImage->width, cvImage->widthStep, FC2_PIXEL_FORMAT_RGB8, btf);
if (cvImage->nChannels == ) error = fc2SetImageDimensions(pImage, cvImage->height, cvImage->width, cvImage->widthStep, FC2_PIXEL_FORMAT_BGRU, btf);
} else if (cvImage->depth == IPL_DEPTH_16U) {
if (cvImage->nChannels == ) error = fc2SetImageDimensions(pImage, cvImage->height, cvImage->width, cvImage->widthStep, FC2_PIXEL_FORMAT_MONO16, btf);
if (cvImage->nChannels == ) error = fc2SetImageDimensions(pImage, cvImage->height, cvImage->width, cvImage->widthStep, FC2_PIXEL_FORMAT_RGB16, btf);
} else error = fc2SetImageDimensions(pImage, cvImage->height, cvImage->width, cvImage->widthStep, FC2_UNSPECIFIED_PIXEL_FORMAT, btf);
if ( error != FC2_ERROR_OK )
{
printf( "Error in fc2SetImageDimensions: %d\n", error );
}
fc2SetImageData(pImage, (const unsigned char*)cvImage->imageData, cvImage->imageSize);
if (error != FC2_ERROR_OK)
{
printf( "Error in fc2SetImageData: %d\n", error );
}
return pImage;
}