blend_modes

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Wrong transparency results in some specific cases

1

In some specific cases I got unexpected behaviours with transparency. To replicate the problem you can use the attached images (please note that images are 10x10 to better debug the...

nico00

Can't install blend_modes

1

Every time I try to install I get the following error: ERROR: Command errored out with exit status 1: command: 'c:\users\bram\appdata\local\programs\python\python38\python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\Bram\\AppData\\Local\\Temp\\pip-install-hpxlb90y\\blend-modes_74cbb38837e54b33ad88842e7ef2ea0c\\setup.py'"'"'; __file__='"'"'C:\\Users\\Bram\\AppData\\Local\\Temp\\pip-install-hpxlb90y\\blend-modes_74cbb38837e54b33ad88842e7ef2ea0c\\setup.py'"'"';f=getattr(tokenize,...

devBram97

Add type hints for clarity

2

We should add type hints to improve clarity regarding inputs and outputs.

flrs

Change image format for tests

2

The currently used "PNG" format is not lossless and therefore might influence the quality of the tests. For example, if a prepared test image is exported from GIMP for comparison...

flrs

Add Cython implementation

5

You mentioned that these could be sped up if implemented in Cython. If you're interested, I have done so here, and gotten a pretty good speed improvement: https://pastebin.com/fAD9avjP If there're...

flrs

multiply : The function however expects a 4-layer

1

I tried to use multiply effect and I got this error ``` TypeError: The blend_modes function "multiply" received a numpy array with 3 layers for its argument "img_in". The function...

B14ckP4nd4

Adding new modes

1

Hi, thanks for this great project, will there be new modes like `Linear Burn`, `Color Burn`, ... as described [here](http://www.simplefilter.de/en/basics/mixmods.html)? It will be very helpful

pd2871

I do no longer have resources to further develop blend_modes and I am looking for a contributor to step in to maintain the project and take it further. Are you...

flrs

Fix error in the [blending_functions.py](https://github.com/flrs/blend_modes/blob/master/blend_modes/blending_functions.py#L69) file (fixes [issue #29](https://github.com/flrs/blend_modes/issues/29)) ```python ratio[ratio == np.NAN] = 0.0 ``` changed to: ```python ratio[np.isnan(ratio)] = 0.0 ```

marcodemutti

np.NAN error

1

should be changed to ```python ratio[ratio == np.nan] = 0.0 ```

yuxi-liu-wired