topic Re: Resizing image in Intel® Integrated Performance Primitives

Resizing image

Deleted_U_Intel — Wed, 24 Mar 2004 20:44:46 GMT

Hi all

Ineed to use function ippiResize_8u_P3R(const Ipp* const pSrc[3],IppiSize srcSize, int srcStep, ...

Can anybody explaine me what is -srcStep?

Because I expect to see something like - int srcStep[3]

I have color model planar YUV422, so it should be:

int nSteps[3] = {nWidth, nWidth/nCdx, nWidth/nCdx};

Thanks,

Adi

Re: Resizing image

Intel_C_Intel — Wed, 24 Mar 2004 23:37:15 GMT

Hi Adi,

ippiResize_8u_P3R do resize for 3 channels images with the same dimensions for all three planes. So, it does not work with sampled down images. But you can to use ippiResize_8u_C1R to do resize for each plane separately.

Regards,
Vladimir

Re: Resizing image

mont_blanc — Thu, 14 Dec 2006 22:41:17 GMT

hi,
srcStep is the size in byte of one line of the image data. Normally, it is equal to width*(byte depth of each pixel) and it is important for locating the pixel by their coordinate.

pixel vaule = imagedata [lines*step + cols] ;