calcHist() should raise error for incompatible nimages and dims (Bug #3918)
| Status: | Incomplete | Start date: | 2014-09-25 |
|---|---|---|---|
| Priority: | Low | Due date: | |
| Assignee: | Baris Demiroz |
% Done: | 0% |
| Category: | imgproc, video | ||
| Target version: | - | ||
| Affected version: | 2.4.9 (latest release) | Operating System: | Any |
| Difficulty: | HW Platform: | Any | |
| Pull request: |
Description
When dims=1 is passed to calcHist() doesn't take nimages parameter into account, and processes as if nimages=1. However, this is not directly or intuitively visible from the documentation. Documentation should be more clear about this behavior and/or calcHist() should raise an error via CV_Assert() for incompatible parameters. The first impression of the function signature is that it is going to aggregate the histograms of all the given images.
PS. I found the whole calcHist() usage obscure, it is very hard to understand and use unlike most of the OpenCV.
History
Updated by Vladislav Vinogradov over 10 years ago
Hello Baris,
Could you add a sample code to reproduce the issue?
- HW Platform changed from x64 to Any
- Operating System changed from Windows to Any
- Status changed from New to Incomplete
- Category set to imgproc, video
- Assignee set to Baris Demiroz
Updated by Maksim Shabunin over 9 years ago
Issue has been transferred to GitHub: https://github.com/Itseez/opencv/issues/4833