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Feature #27286: Add ColoredHashTSDFVolume support in rgbd module(CPU) #3949

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@huiyu-mcse huiyu-mcse commented Jun 8, 2025

Introduced 'ColoredHashTSDFVolume', a new CPU-only volume type extending 'HashTSDFVolume' with color integration support. This feature enables reconstruction of colored 3D scenes using aligned depth and RGB images, while benefiting from the memory and performance advantages of hashed volumetric fusion.

Main contributions:

  • New data structure to store both TSDF and RGB color information
  • Extended raycasting and fetch functions to support color output

This enhancement follows the direction proposed in issue #25155 and addresses feature request #27286.

Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

  • I agree to contribute to the project under Apache 2 License.
  • To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
  • The PR is proposed to the proper branch
  • There is a reference to the original bug report and related work
  • There is accuracy test, performance test and test data in opencv_extra repository, if applicable
    Patch to opencv_extra has the same branch name.
  • The feature is well documented and sample code can be built with the project CMake

Introduced 'ColoredHashTSDFVolume', a new CPU-only volume type extending
'HashTSDFVolume' with color integration support. This feature enables
reconstruction of colored 3D scenes using aligned depth and RGB images,
while benefiting from the memory and performance advantages of hashed
volumetric fusion.
Main contributions:
- New data structure to store both TSDF and RGB color information
- Updated integration logic to accumulate color per voxel
- Extended raycasting and fetch functions to support color output
- Comprehensive test coverage confirming correctness of the implementation
This enhancement follows the direction proposed in issue #25155 and addresses
feature request #27286.
Tested: All new unit tests pass locally.
Co-authored-by: Liane Lin <liane.lin@tecnico.ulisboa.pt>
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savuor commented Jul 2, 2025

I'm for integrating this new functionality into 5.x first. Here are my pros:

  • We already have ordinary TSDF with color support in 5.x, but buggy
  • TSDF in 5.x has better test coverage and the tests require minimum change to support new TSDF classes
  • The TSDF interface in 5.x was largely reworked, it's more uniform and among other things supports Python bindings

Cons are:

  • This code is already written
  • 5.x is not released yet

@asmorkalov what are your thoughts on this?

huiyu-mcse reacted with laugh emoji

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