Page 1 of 1

RLE corrupts pictures

PostPosted: Wed Feb 25, 2015 3:16 am
by SysOp
Saving a bitmap with RLE compression changes the picture and this should not happen. Below is an example. I have circled some differences.

Uncompressed:
Image

RLE compressed:
Image

I hope this can be fixed. Thanks in advance!

Re: RLE corrupts pictures

PostPosted: Wed Feb 25, 2015 4:32 pm
by Neosoft Support
You're right RLE compression shouldn't introduce any distortion in the image. However, I captured your original image from the forum pasted it into NeoPaint. I did see similar distortion when saving to 4bit (16 color) RLE BMP format, but no distortion when saving to 8bit (256 color) format.

I will make a note to correct this in the next update. The BMP filter used in NeoPaint was written by another company, so we'll probably need to consult with them in order to find a solution. Perhaps, in the mean time you can use uncompressed or 8bit RLE?

Sorry for the inconvenience.

Re: RLE corrupts pictures

PostPosted: Thu Feb 26, 2015 12:22 am
by SysOp
Thanks! I am using NeoPaint 4 now to save 4-bit RLE compressed bitmaps.