RGBToGray bug?

RGBToGray bug?

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?

P.S. I used the latest IPP.

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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.


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