A discontinued application I'm still using outputs Targa images with inverted alpha channels.
XnView MP has an option for the preview pane to "use alpha channel" which fixes the image preview's opacity in XnView. However, this does not save to the image file. I will also need to fix and convert images in bulk.
How do I invert the alpha channel of an image?
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Re: How do I invert the alpha channel of an image?
By using 'alpha channel', output is good??VoidsShadow wrote: ↑Sat Feb 15, 2020 8:33 am XnView MP has an option for the preview pane to "use alpha channel" which fixes the image preview's opacity in XnView.
Pierre.
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Re: How do I invert the alpha channel of an image?
Unfortunately, no. Toggling the "use alpha" setting in XnView MP only affect the preview of the image, but not the file's data nor does it affect XnConvert's output.
Allow me to simplify the issue.
The source images' alpha channels are set to 100% and they need to be changed to 0%.
After weeks of trial and error, I've found a workaround in XnConvert in the Actions tab.
Allow me to simplify the issue.
The source images' alpha channels are set to 100% and they need to be changed to 0%.
After weeks of trial and error, I've found a workaround in XnConvert in the Actions tab.
- 1. Add action: "Add mask"
2. Change mask opacity to '0'.
3. Check "Use mask as Alpha"
4. Add "Change color depth"
5. Select "24 bits"