cvSetData( pImgEmbed, data, m_width ) doesn't work! Anybody Help!

asked 2012-09-05 03:34:30 -0600

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IplImage* gray;
BYTE* data;
int m_width;
int m_height;

IplImage * pImgEmbed = NULL;

char*filename=argc==2?argv[1]:(char*)"14.bmp";
gray=cvLoadImage(filename,0);
data=(uchar *)gray->imageData;
          m_width=gray->width;
          m_height=gray->height;

pImgEmbed=cvCreateImageHeader(cvSize(m_width, m_height), IPL_DEPTH_8U, 1);

cvSetData( pImgEmbed, data, m_width );

Now ,I think pImgEmbed is a IplImage image ,but I can't use

cvNamedWindow("window");
cvShowImage("window", pImgEmbed);

to show it,Why?

answered 2012-09-05 06:09:23 -0600

AlexanderShishkov

3577 ●14 ●32 ●57

It is strange. This code is working for me:

int main( int argc, char** argv )
{
IplImage* gray;
uchar* data;
int m_width;
int m_height;

IplImage * pImgEmbed = NULL;

char filename[] = "baboon.jpg";
gray=cvLoadImage(filename,0);
data=(uchar *)gray->imageData;
          m_width=gray->width;
          m_height=gray->height;

pImgEmbed=cvCreateImageHeader(cvSize(m_width, m_height), IPL_DEPTH_8U, 1);

cvSetData( pImgEmbed, data, m_width );
cvNamedWindow("sample");
cvShowImage("sample", pImgEmbed);
cvWaitKey(0);
return 0;
}

What version of OpenCV do you use? What OS?

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Comments

Thank you very much! You are very helpful! I am so careless! Those codes are I pick up from my program.But I don't notes the line ,so I very silly, to create pImgEmbed imageheader before give m_width and m_height value.Then I check the codes again and again ,just found out pImgEmbed->widthstep is 0.

winne ( 2012-09-06 02:59:20 -0600 )edit

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