https://community.intel.com/t5/Intel-Integrated-Performance/RGBToGray-bug/m-p/912258#M14381 I use RGBToGray to convert a color image to a gray scale image, but I found the result was very strange, if I convert a white color image whose pixel values are (255,255,255), I got a gray scale image with all values 254 ( not 255), why?<BR /><BR />P.S. I used the latest IPP.<BR /> Wed, 06 Sep 2006 21:12:10 GMT Jianwei_H_ 2006-09-06T21:12:10Z https://community.intel.com/t5/Intel-Integrated-Performance/RGBToGray-bug/m-p/912258#M14381 I use RGBToGray to convert a color image to a gray scale image, but I found the result was very strange, if I convert a white color image whose pixel values are (255,255,255), I got a gray scale image with all values 254 ( not 255), why?<BR /><BR />P.S. I used the latest IPP.<BR /> Wed, 06 Sep 2006 21:12:10 GMT https://community.intel.com/t5/Intel-Integrated-Performance/RGBToGray-bug/m-p/912258#M14381 Jianwei_H_ 2006-09-06T21:12:10Z https://community.intel.com/t5/Intel-Integrated-Performance/RGBToGray-bug/m-p/912259#M14382 <P>Hello,</P> <P>thank you for your report, we will analize the code. It seems that optimized version of this function suffer from lack of precision of color conversion coefficients.</P> <P>Regards,<BR /> Vladimir</P> Fri, 15 Sep 2006 04:05:06 GMT https://community.intel.com/t5/Intel-Integrated-Performance/RGBToGray-bug/m-p/912259#M14382 Vladimir_Dudnik 2006-09-15T04:05:06Z