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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 26 Jun 2015
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      Today is a huge step for the LGBT community, and also a great demo of just how *bad* JPEG is at compressing brightly colored rainbows!

      1 reply 168 retweets 93 likes
    2. Bird of Many Birds‏ @Esven_the_drake 26 Jun 2015
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      Replying to @marcan42

      @marcan42 @jacel In theory the discrete cosine transform should be great at that since there's no high frequency information in a rainbow.

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 26 Jun 2015
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      Replying to @Esven_the_drake

      @Esven_the_drake @jacel Real rainbows, sure, but these are rainbow flags/icons with discrete chroma steps which are the bane of DCT!

      11:38 AM - 26 Jun 2015
      3 replies 0 retweets 0 likes
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        2. Hector Martin‏ @marcan42 26 Jun 2015
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          Replying to @bofh453

          @bofh453 @Esven_the_drake @jacel Not just half res - the quantization tables for chroma are also stronger (lower quality).

          2 replies 0 retweets 0 likes
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