Incorrect Chi-Square distance used in LBPH FaceRecognizer (Bug #3514)
| Status: | Done | Start date: | 2014-01-30 |
|---|---|---|---|
| Priority: | Normal | Due date: | |
| Assignee: | Ivy Lee |
% Done: | 0% |
| Category: | legacy, contrib | ||
| Target version: | 3.0 | ||
| Affected version: | branch 'master' (3.0-dev) | Operating System: | Linux |
| Difficulty: | HW Platform: | x64 | |
| Pull request: | https://github.com/Itseez/opencv/pull/2237 |
Description
When using LBPH face recognizer, in prediction, the algorithm computes the Chi-Square distance between two spatial histograms, the correct Chi-Square distance should be CV_COMP_CHISQR_ALT introduced in this commit:
https://github.com/vkocheganov/opencv/commit/086db9d6db73956be2ee18b8a552a9179da6b6fd
Reference paper regarding LBPH: Ahonen, T., Hadid, A., and Pietikainen, M. Face Recognition with Local Binary Patterns. Computer Vision - ECCV 2004 (2004), 469–481.
Associated revisions
Fixed Bug #3514 Incorrect Chi-Square distance used in LBPH FaceRecognizer
Merge pull request #3514 from mshabunin:compat-24
History
Updated by Ivy Lee about 11 years ago
- Assignee set to Ivy Lee
Updated by Vladislav Vinogradov about 11 years ago
Hello Ivy,
Thank you for reporting the problem.
If you could work on a solution for the issue on your side, a contribution (see http://www.code.opencv.org/projects/opencv/wiki/How_to_contribute) would be very appreciated!
- Category set to legacy, contrib
- Status changed from New to Open
Updated by Vladislav Vinogradov about 11 years ago
- Pull request set to https://github.com/Itseez/opencv/pull/2237
Updated by Vladislav Vinogradov about 11 years ago
- Affected version changed from 2.4.8 (latest release) to branch 'master' (3.0-dev)
Updated by Vladislav Vinogradov about 11 years ago
The pull request was merged into master branch.
Thanks you for contribution!
- Target version set to 3.0
- Status changed from Open to Done