Alexander Suvorov
5822475b22
Completely remove all the chunk related code from the encoder and decoder
...
This change slightly improves compression speed and simplifies further modification of the code.
Explanation:
Additional performance boost is achieved by using linear representation for selectors and storing block selectors in a single uint32/uint64.
Testing:
The modified algorithm has been tested on the Kodak test set using 64-bit build with default settings (running on Windows 10, i7-4790, 3.6GHz). All the decompressed test images are identical to the images being compressed and decompressed using original version of Crunch.
[Compressing Kodak set without mipmaps]
Original: 1582222 bytes / 28.927 sec
Modified: 1494501 bytes / 17.301 sec
Improvement: 5.54% (compression ratio) / 40.19% (compression time)
[Compressing Kodak set with mipmaps]
Original: 2065243 bytes / 36.992 sec
Modified: 1945365 bytes / 22.548 sec
Improvement: 5.80% (compression ratio) / 39.05% (compression time)
2017-06-07 16:55:41 +02:00
..
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-06-07 16:55:41 +02:00
2017-06-07 16:55:41 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2011-12-27 21:18:07 +00:00
2017-05-18 13:44:04 +02:00
2017-05-18 13:44:04 +02:00
2017-05-18 13:44:04 +02:00
2017-05-18 13:44:04 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-06-07 16:55:41 +02:00
2017-06-07 16:55:41 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 13:16:13 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2012-04-26 07:14:21 +00:00
2017-04-28 11:32:14 +02:00
2017-04-28 11:32:14 +02:00
2017-04-26 13:16:13 +02:00
2017-04-26 13:16:13 +02:00
2017-04-26 13:16:13 +02:00
2017-04-26 13:16:13 +02:00
2017-04-26 13:16:13 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2011-12-27 21:18:07 +00:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2011-12-27 21:18:07 +00:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2017-04-26 11:41:07 +02:00
2012-11-25 08:41:25 +00:00