Lovell Fuller
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692e2d4df4
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Automate expected vs actual for blur/sharpen tests
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2015-09-07 14:17:35 +01:00 |
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Lovell Fuller
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658a541f49
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Add test case for enlarge+embed combo #243
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2015-08-12 09:26:38 +01:00 |
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Lovell Fuller
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36ac8828f2
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Gamma correction and premultiply do not mix
Skip premultiply for fast blur/sharpen
Automate gamma correction tests
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2015-08-11 21:51:22 +01:00 |
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Lovell Fuller
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1091be374e
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Alpha compositing: support grey+alpha src and non-alpha dst
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2015-06-02 14:51:08 +01:00 |
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Daniel Gasienica
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ef8db1eebf
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Premultiply alpha channel to avoid dark artifacts during tranformation
Add `Sharp.compare(file1, file2, callback)` function for comparing images
using mean squared error (MSE). This is useful for unit tests.
See:
- https://github.com/jcupitt/libvips/issues/291
- http://entropymine.com/imageworsener/resizealpha/
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2015-06-01 14:21:02 +01:00 |
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Daniel Gasienica
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64f7f1d662
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Add experimental overlayWith API
Composites an overlay image with alpha channel into the input image (which
must have alpha channel) using ‘over’ alpha compositing blend mode. This API
requires both images to have the same dimensions.
References:
- http://en.wikipedia.org/wiki/Alpha_compositing#Alpha_blending
- https://github.com/jcupitt/ruby-vips/issues/28#issuecomment-9014826
See #97.
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2015-06-01 14:21:01 +01:00 |
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Lovell Fuller
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b50fb53f27
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Use image fingerprints in functional tests #122
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2015-06-01 14:21:01 +01:00 |
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