pytorch / pytorch/vision

Lanczos interpolation support in resize

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Description

🚀 The feature

Are there any plans to support the lanczos interpolation method for resize? @NicolasHug
I might be open to implement it (depends on the complexity).

Motivation, pitch

Seems important enough to include it in torchvision. I've been trying to port some code to torchvision from PIL and Mediapy and this missing interpolation method stands as an obstacle. Also, seems like that some models requiring this interpolation method in hf transformers are having to change to other methods for preprocessing.

Alternatives

No response

Additional context

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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

Start by locating torchvision's resize implementation and its existing interpolation options. Compare the expected Lanczos behavior with the PIL and Mediapy usage mentioned in the issue, then verify that resize can support the method for the preprocessing cases described.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
computer-vision
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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