[Question] Minimal camera parameters

[Kristinita]

1. Summary

I get bad scan images in OpenNoteScanner. Text not readable.

Possible, it because camera of my smartphone is not good.

2. Environment

• ARK Benefit S401,
• CyanogenMod 12.1,
• MergeVariables 1.0.29,
• 2MP camera.

3. Steps to reproduce

I install MergeVariables via F-Droid → I install OpenCV Manager → I placed my white book to black fabric → I open MergeVariables → I take a photo of my book, use MergeVariables.

4. Expected behavior

Readable text.

5. Actual behavior

Example:

6. Not helped

I try in MergeVariables:

• Color mode,
• Image Processor,
• Automatic mode,
• Flash.

The image is not much improved.

Thanks.

[allgood]

Your camera have very low resolution. I think that minimal resolution for a acceptable quality is above 10MP. I tested on 5MP and 7MP with bad results. If you disable image processor you will capture the raw image of the camera, it is the best you can do, if this isn't acceptable, please try to compare with images of the stock camera app, if they are different, please tell me.

[marmistrz]

It would probably be a good idea to show the resolution somewhere in the UI. I wasn't actually sure if ONS was using the highest possible resolution for my device.