Specifications

Image Creation and Access
4-37
4
Example 4-6 Converting Images
int example46( void ) {
IplImage *imga, *imgb;
__try {
imga = iplCreateImageHeader(
1, 0, IPL_DEPTH_8U, "GRAY", "GRAY",
IPL_DATA_ORDER_PIXEL, IPL_ORIGIN_TL,
IPL_ALIGN_QWORD, 100, 150, NULL, NULL,
NULL, NULL);
if( NULL == imga ) return 0;
imgb = iplCreateImageHeader(
1, 0, IPL_DEPTH_16S, "GRAY", "GRAY",
IPL_DATA_ORDER_PIXEL, IPL_ORIGIN_TL,
IPL_ALIGN_QWORD, 100, 150, NULL, NULL,
NULL, NULL);
if( NULL == imgb ) return 0;
iplAllocateImage( imga, 1, 128 );
if( NULL == imga->imageData ) return 0;
iplAllocateImage( imgb, 0, 0 );
if( NULL == imgb->imageData ) return 0;
// Convert unsigned char to short
iplConvert( imga, imgb );
// Check if an error occurred
if( iplGetErrStatus() != IPL_StsOk ) return 0;
}
__finally {
iplDeallocate(imga,IPL_IMAGE_HEADER|IPL_IMAGE_DATA);
iplDeallocate(imgb,IPL_IMAGE_HEADER|IPL_IMAGE_DATA);
}
return IPL_StsOk == iplGetErrStatus();
}