Intel® Integrated Performance Primitives

Auto Contrast in Grey Images

Hello All, 

I just implemented the histogram equalization technique using intel ipp functions. Since Histogram equalization equalizes within the two extreem values, I was thinking of implementing other methods for auto contrast. 

Is there any way that I can perform auto contrast and not histogram equlaiztion? 

Thanks, 
Sharath 

Unable to run IPP 7.1 programs

Hi all,

I'm trying to run a program written using Microsoft Visual C++ 6.0 (legacy software, that's why it's running on such an old version). It uses some IPP APIs, and I have installed IPP 7.1 in

C:\ProgramFiles\Intel\Composer XE

in which there is an ipp folder, and a redist\ia32\ipp folder that contains ippcore-7.1.dll, among many other dlls.

After I've compiled and built my program, I tried to run it, but I kept getting the error

How can I get the correct video duration out of the video stream for sure?

Hello,

I use the following call to get the duration of one video to be decoded. The debug version of my MS VS 2008 compiler does not have any problems to get the correct duration of the loaded video. The release version has some problems to get from every video the correct duration. Sometimes the duration is 0 instead of 3-5s or seems to be shorter than the given value of 30-60s from the video. I wonder why there is a difference between the debug and release one. I use the IPP 7-0-2 in my software.

IPPISet is slower than memset & IPPSSET

Hi,

  We tried IPPISET roi based method to set the set of portions in the image 0.

  But this is slower than memset [on entire image to 0]

  We have tried the IPPSSET and found it is more faster than memset and IPPISET.

  Is the ROI based method usually slower than non-ROI based method like IPPSSET.

  Actually we thought since we were doing selective regions in image to reset to zero using IPPISET ,it should be faster than memset and IPPSET   performed on entire image.

IPPISet is slower than memset & IPPSSET

Hi,

  We tried IPPISET roi based method to set the set of portions in the image 0.

  But this is slower than memset [on entire image to 0]

  We have tried the IPPSSET and found it is more faster than memset and IPPISET.

  Is the ROI based method usually slower than non-ROI based method like IPPSSET.

  Actually we thought since we were doing selective regions in image to reset to zero using IPPISET ,it should be faster than memset and IPPSET   performed on entire image.

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