falktan / ovip Goto Github PK

Manage dependecies using npm.
This makes the dependencies more explicit and makes it easier to add more dependencies.

The release process has been described in the readme and shall be automated.

• trigger on update of main-branch
• merge main into release-branch
• build with node as described in readme
• move description of release from readme to file that defines the action for the release

Add an option to select an image from a file rather than only directly using the one from the camera.

Goal: Re-upload the icons with white rather than transparent background.
Reason: Currently the background is transparent. While this is fine for bright backgrounds this just does not look good on dark backgrounds.

When running the app directly from local files, the app fails with the following error:

Access to script at 'file:///C:/projects/ovip/docs/app.js' from origin 'null' has been blocked by CORS policy: Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, chrome-untrusted, https

This is caused by the caching mechanism used to make this app offline available. The cleanest solution is probably to add a description in the Readme, describing how to serve this app locally to avoid this error.

In first test the results of the OCR from TesseractJS are not very convincing. One hint on how to improve on this that I read somewhere a while ago is to use a more suitable thresholding method. The one described here might be suitable:
https://docs.opencv.org/4.5.2/d7/dd0/tutorial_js_thresholding.html

• implement a adaptive thresholding as a pre-processing step
• find appropriate parameters
• check if this really improves over previous results without pre-processing

A small collection of sample pictures to test the quality of the OCR algorithm would be helpful.
I.e. there should be about 15 pictures with different lighting conditions and different text size and quality with more or less distracting background.
The repo https://github.com/falktan/ovip-supplementary is probably a good place for these pictures.

In addition, it would be helpful to have a convenient way to test the algorithm on those pictures.

Add UI-components that allow to set some first preferences.

• Allow to select the language / languages to be used for OCR
• Add a button to reset settings to the default
• Settings should of cause be stored when closing and re-opening the app

The app has been tested on Chrome on Android and on Windows so far.
For other platforms there were reports that it does not work.
The goal of this ticket is to get an overview on which platform there are issues (and if very easy to fix to fix them).
Platforms where it would be good to have this working

• Andoid / Chrome (already checked)
• Windows / Chrome (already checked)
• Android / Firefox
• Windows / Firefox
• IOS / Safari