pytorch / pytorch/vision

Single channel support for optical flow

Open
#5,960 4 comments 0 reactions 0 assignees View on GitHub

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Dominant language
Python
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Avg merge
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Merged PRs (30d)
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Description

🚀 The feature

Would love to be able to run black and white images through the new RAFT optical flow model! (Same goes for ResNet)

Motivation, pitch

I have a B+W dataset. Duplicating channels feels wasteful.

Alternatives

No response

Additional context

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Locate the RAFT optical flow and ResNet model entry points and inspect how they validate or consume image channels. Determine the expected behavior for black-and-white inputs without duplicating channels, then add coverage for both models and run the relevant model tests. Done means the models accept the stated single-channel dataset while existing multi-channel behavior remains intact.

Written by the indexing model from the issue text.

Assessment

Tech stack
python, pytorch
Domain
computer-vision, machine-learning
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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