Rich Geldreich
Rich Geldreich
Hi, I compressed an image using an older version of Compressonator (v2 series) to ASTC 8bpp highest quality (q=1.0), and got 40.737 REC 709 Y dB. I then upgraded to...
Hi, I use lodepng in our open source product (Basis Universal): https://github.com/BinomialLLC/basis_universal It's great. I've integrated the latest lodepng version which is coming out in a few days. I've released...
I first had to work around the "no metadata" issue (by modifying a python file, as others describe). I'm now able to program the FPGA using the default template and...
I've realized that your proposal may also be quite useful for accelerating Huffman decoding, like this: https://fastcompression.blogspot.com/2015/10/huffman-revisited-part-4-multi-bytes.html The modern LZ/Huffman decoders benefit from decoding 2 streams in parallel (on the...
It looks possible to write completely standard PNG files that can be optionally decompressed across multiple threads: https://twitter.com/richgel999/status/1470846966276018187 To do this, you would use multiple IDAT's, force a flush to...
The adler-32 check is quite slow, and can add a significant amount of CPU time during decompression. This check is not necessary, and some PNG readers (like the one in...
Using more modern zlib compression libs, it's possible to greatly speed up PNG writing while still writing fully standard PNG's that are reasonably compressed. The possible speed gains are large,...
One of the issues we have with .PNG is slow read/write times. There are now new lossless open source codecs without patent concerns, such as Zstandard (maintained by Facebook) or...
Hi - It would be extremely useful to the world if Wuffs was made trivial to drop into existing codebases that utilize the stb_image API. I was going to look...