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4 months ago Changes of Pull Request #44
Commit messages for #40
- 61f78f48c7ed2847064b81343cf70e51cbe10ce1 40-free-form-bug-transparent: Previously png images, with only black as color, but different alpha values to simulate gray were turned completely black. Now when there are 4 channels, the alpha value is calculated as follows, while the RGB color is preserved:
A-A*(Grayvalue(RGB)/255),- Grayvalue(RGB) is the grayvalue of the RGB value according to opencv.
- A is the original alpha value.
- Type conversion in OpenCV must be done in order to work with floats, see the following type table:
Free From funktioniert nicht bei Bildern, welche bereits transparent sind. Transparente Pixel werden derzeitig schwarz. Stattdessen sollem diese weiterhin transparent bleiben.