Downscaling still fails for some images on iOS6 and iOS7

Question

Downscaling still fails for some images on iOS6 and iOS7

Closed this issue 10 years ago · 5 comments

It seems the downscaling is still incorrect for some images.

The subsampling and vertical squash is detected, but now the image is incorrectly horizontally downscaled by a factor of two.

http://jsfiddle.net/TmxQ8/3/embedded/result/

confile commented 11 years ago

+1

Answer 1 · 2014-04-15T00:43:37.000Z

@stomita Usually I have no problems with this lib but the example from @ziriax shows a problem.

Here is what it looks like on my iPhone 5 ios 7.1:

Answer 2 · 2014-04-15T00:56:41.000Z

@confile I understand the problem and confirmed it happens on my env too. However, I might not have so much time to debug and detect the cause of the problem. If you guys find the cause and hopefully get a patch, please send me the pull request.

Answer 3 · 2014-04-15T00:57:40.000Z

@ziriax Did you make any progress on this problem?

Answer 4 · 2014-08-13T22:01:33.000Z

It is fixed with this @tinganho 's commit which deals with 0.25 subsampling.
#30
You can check here:
http://jsfiddle.net/TmxQ8/5/embedded/result/