converting .png to .jp2 by opj_compress is different from the original image

[seyeon923]

I converted .png image to .jp2 image with opj_compress.exe of release v2.4.0.
(I downloaded the openjpeg-v2.4.0-windows-x64.zip at https://github.com/uclouvain/openjpeg/releases/tag/v2.4.0)
And the result jp2 image is a little different from with the original png image.

This is the command that I used for png -> jp2

.\opj_compress.exe -i .\Lenna.png -o Lenna.jp2

Left image is the original png image and right is converted jp2 image.

When I checked the pixel value, it differs.

I've also attached both files(Lenna.png and Lenna.jp2) with zip.
Lenna.zip

Is it a bug or did I use it wrongly?

I'm not sure, but when I debug it myself, it seems wrong pixel values are read from pngtoimage.

Thank you

[seyeon923]

So, the program cannot decode gAMA, cHRM or sRGB chunks correctly?

I'm able to get the Lenna.jp2 identical to Lenna.png by removing the sRGB chunk.
Thank you.