Bug report #21746
SAGA OpenCV Image Analysis
| Status: | Feedback | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: | - | ||
| Category: | Processing/SAGA | ||
| Affected QGIS version: | 3.4.6 | Regression?: | No |
| Operating System: | Windows 10 | Easy fix?: | No |
| Pull Request or Patch supplied: | No | Resolution: | |
| Crashes QGIS or corrupts data: | No | Copied to github as #: | 29561 |
Description
During SAGA Image analysis all of modules based on OpenCV don't work with the same output - Error select a library. I can see that this is the common issue, but couldn't manage to solve it.
I have tried installing QGIS on Windows 7, Windows 10, Ubuntu 18 (64 bit). I have tried it on QGIS 3.0, 3.4 and 3.6 - installed as standalone and via Osgeo - the result is the same.
Is there any way to solve it?
History
#1
Updated by Giovanni Manghi over 5 years ago
- Status changed from Open to Feedback
Nikola Kranjčić wrote:
During SAGA Image analysis all of modules based on OpenCV don't work with the same output - Error select a library. I
what do you mean with the above?
I made a quick and dirt test, and the tools here seems to work (Ubuntu and qgis 3.6.1).
#2
Updated by Nikola Kranjčić over 5 years ago
When trying to perform image classication there is always an error regarding use of right library (openCV functions). Simmilar to this error mentioned - https://issues.qgis.org/issues/19540
What could be the issue, or next steps?
Kind regards,
Nikola Kranjčić
#3
Updated by Giovanni Manghi over 5 years ago
Nikola Kranjčić wrote:
When trying to perform image classication there is always an error regarding use of right library (openCV functions). Simmilar to this error mentioned - https://issues.qgis.org/issues/19540
What could be the issue, or next steps?
there are several image classification tools, can you specify one? It also be useful if you can attach a minimal project+data we can use to test.
#4
Updated by Nikola Kranjčić over 5 years ago
- File Signature_Sample_Osijek.shp added
I am trying some of the machine learning modules, for example, Artificial Neural Network. I am attaching one satellite image via link and one shapefile with test samples in it.
Satellite image: https://drive.google.com/open?id=1W5DJdfs-gYWtlpr9PHn8ep1uGic7WwSz
#5
Updated by Giovanni Manghi over 5 years ago
Nikola Kranjčić wrote:
I am trying some of the machine learning modules, for example, Artificial Neural Network. I am attaching one satellite image via link and one shapefile with test samples in it.
Satellite image: https://drive.google.com/open?id=1W5DJdfs-gYWtlpr9PHn8ep1uGic7WwSz
unsure about the results (you din't attached the training areas), but the tool works here.
#6
Updated by Alexander Bruy over 5 years ago
Please provide a test data and step-by-step instructions how to reproduce the issue. Also please report which SAGA version do you use.