Comments on: Generation Loss, What JPEG Compression Looks Like After 600 Saves http://laughingsquid.com/generation-loss-what-jpg-compression-looks-like-after-600-saves/ art, culture and technology from San Francisco and beyond Sat, 21 Nov 2009 02:11:18 -0800 http://wordpress.org/?v=2.8.6 hourly 1 By: Tim http://laughingsquid.com/generation-loss-what-jpg-compression-looks-like-after-600-saves/comment-page-1/#comment-664259 Tim Mon, 10 Aug 2009 15:28:35 +0000 http://laughingsquid.com/?p=20319#comment-664259 PS: Very cool video. I should have said that first. :-) PS: Very cool video. I should have said that first. :-)

]]> By: Tim http://laughingsquid.com/generation-loss-what-jpg-compression-looks-like-after-600-saves/comment-page-1/#comment-664258 Tim Mon, 10 Aug 2009 15:27:55 +0000 http://laughingsquid.com/?p=20319#comment-664258 Why increase the compression every time? (and how was that increase done 600 times??) Test should be done at a decent compression setting, like 80%, and that setting kept for the 600 times -more realistic. (like saving 600 times is realistic, lol). Why increase the compression every time? (and how was that increase done 600 times??) Test should be done at a decent compression setting, like 80%, and that setting kept for the 600 times -more realistic. (like saving 600 times is realistic, lol).

]]> By: Anand http://laughingsquid.com/generation-loss-what-jpg-compression-looks-like-after-600-saves/comment-page-1/#comment-579973 Anand Tue, 24 Mar 2009 17:34:36 +0000 http://laughingsquid.com/?p=20319#comment-579973 Should have chosen a better image, a face probably..Barack Obama? Should have chosen a better image, a face probably..Barack Obama?

]]> By: Guy Parkinson http://laughingsquid.com/generation-loss-what-jpg-compression-looks-like-after-600-saves/comment-page-1/#comment-579234 Guy Parkinson Tue, 24 Mar 2009 02:19:38 +0000 http://laughingsquid.com/?p=20319#comment-579234 Reciprocal entropy Reciprocal entropy

]]> By: Jesse http://laughingsquid.com/generation-loss-what-jpg-compression-looks-like-after-600-saves/comment-page-1/#comment-578672 Jesse Mon, 23 Mar 2009 16:33:49 +0000 http://laughingsquid.com/?p=20319#comment-578672 Neat, it starts looking like a Monet at one point. Neat, it starts looking like a Monet at one point.

]]> By: Vlasta http://laughingsquid.com/generation-loss-what-jpg-compression-looks-like-after-600-saves/comment-page-1/#comment-578555 Vlasta Mon, 23 Mar 2009 13:31:17 +0000 http://laughingsquid.com/?p=20319#comment-578555 There are ways around it... try this with RealWorld Photos editor and it will stay the same after 600 saves. There are ways around it… try this with RealWorld Photos editor and it will stay the same after 600 saves.

]]> By: Mike Kupietz http://laughingsquid.com/generation-loss-what-jpg-compression-looks-like-after-600-saves/comment-page-1/#comment-578400 Mike Kupietz Mon, 23 Mar 2009 09:12:58 +0000 http://laughingsquid.com/?p=20319#comment-578400 @Robert, I understand what you're saying but the precise compression depends on the image content. There could be an image which either can be maximally compressed without loss - for instance, by your reasoning, a solid black image, because an image cannot contain any less content than that. Or perhaps you get a cycle of images which repeats. I think an experiment is called for. @Robert, I understand what you’re saying but the precise compression depends on the image content. There could be an image which either can be maximally compressed without loss – for instance, by your reasoning, a solid black image, because an image cannot contain any less content than that. Or perhaps you get a cycle of images which repeats. I think an experiment is called for.

]]> By: Patrick Taylor http://laughingsquid.com/generation-loss-what-jpg-compression-looks-like-after-600-saves/comment-page-1/#comment-578220 Patrick Taylor Mon, 23 Mar 2009 04:07:45 +0000 http://laughingsquid.com/?p=20319#comment-578220 @Robert Solomon. I believe you're thinking of JPEG2000, which is wavelet based, but JPEG itself isn't. @Robert Solomon.

I believe you’re thinking of JPEG2000, which is wavelet based, but JPEG itself isn’t.

]]> By: Robert Solomon http://laughingsquid.com/generation-loss-what-jpg-compression-looks-like-after-600-saves/comment-page-1/#comment-578118 Robert Solomon Mon, 23 Mar 2009 01:25:19 +0000 http://laughingsquid.com/?p=20319#comment-578118 JPEG is lossy compression; each time info is lost. Thus, it reaches a point where there is not enough info for an image. Would not happen with lossless compression. JPEG is a wavelet based technique based on sine waves. JPEG is lossy compression; each time info is lost. Thus, it reaches a point where there is not enough info for an image. Would not happen with lossless compression. JPEG is a wavelet based technique based on sine waves.

]]> By: Mike Kupietz http://laughingsquid.com/generation-loss-what-jpg-compression-looks-like-after-600-saves/comment-page-1/#comment-578098 Mike Kupietz Mon, 23 Mar 2009 01:04:22 +0000 http://laughingsquid.com/?p=20319#comment-578098 Come to think of it, I'd like to see this go far beyond 600 saves... I wonder if it hits homeostasis, or the noisy result keeps changing indefinitely. Come to think of it, I’d like to see this go far beyond 600 saves… I wonder if it hits homeostasis, or the noisy result keeps changing indefinitely.

]]> By: Mike Kupietz http://laughingsquid.com/generation-loss-what-jpg-compression-looks-like-after-600-saves/comment-page-1/#comment-578095 Mike Kupietz Mon, 23 Mar 2009 01:03:07 +0000 http://laughingsquid.com/?p=20319#comment-578095 Interesting, I've been curious about this. I've been wanting to do something similar with MP3 compression at various quality settings. Interesting, I’ve been curious about this. I’ve been wanting to do something similar with MP3 compression at various quality settings.

]]> By: matsonian http://laughingsquid.com/generation-loss-what-jpg-compression-looks-like-after-600-saves/comment-page-1/#comment-578067 matsonian Mon, 23 Mar 2009 00:01:02 +0000 http://laughingsquid.com/?p=20319#comment-578067 Cool... if you keep staring at the final image, I swear I see Madonna on a horse wearing lederhosen. Cool… if you keep staring at the final image, I swear I see Madonna on a horse wearing lederhosen.

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