Support RGBA for torchvision.io.encode_png()
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enhancement
module: io
- Dominant language
- Python
- Stars
- 17.9k
- Forks
- 7.3k
- Avg merge
- 1d 15h
- Merged PRs (30d)
- 13
Description
🚀 The feature
Right now torchvision.io.encode_png() can only encode RGB and GRAYSCALE images. It would be very useful to add alpha channel support for PNG images.
Motivation, pitch
It is useful for segmentation masks to be displayed, for example, in a web browser.
Alternatives
Opencv
Additional context
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start at the torchvision.io.encode_png() entry point and trace how RGB and GRAYSCALE images are currently encoded. Add support for RGBA input while preserving the existing modes; done means an image with an alpha channel can be encoded as a PNG and decoded or displayed with that channel intact.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- computer-vision
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 48/100