Kannada (kan) output is not readable about vietocr3

[Shreeshrii]

The image you have shared seems to show the kannada output. Can you explain the problem being faced?

[Shreeshrii]

To me the output looks fine. For me, the default font is showing up as `Arial Unicode MS' on Windows 10.

[omshivaprakash]

I’m using it on Mac. I shall check on the font but it has not worked on various kannada fonts.

[Shreeshrii]

Are you able to use kannada fonts in other applications on your Mac?

[omshivaprakash]

Yes, If I copy paste the text to text editor, notes, mail etc it displays fine. Tried with Arial Unicode MS. No luck

[Shreeshrii]

work around to read the OCRéd unicode text for Kannada and other languages on the right handside panel.

Does English work?

[Shreeshrii]

What is the Mac OS version? Java version?

[omshivaprakash]

% java -version
java version "1.8.0_102"
Java(TM) SE Runtime Environment (build 1.8.0_102-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.102-b14, mixed mode)

Mac OS - Catalina - 10.15 beta - had same issue with Mojave and earlier versions too.

English Works.

[Shreeshrii]

What about Hindi/Sanskrit?

Quan, are there any Mac users who can help?

See https://stackoverflow.com/questions/5994815/rendering-devanagari-ligatures-unicode-in-java-swing-jcomponent-on-mac-os-x/6376670#6376670

[omshivaprakash]

Hindi Works fine.

[nguyenq]

The program uses Java's native text component to display the output text. We have no Mac to test this issue. Based on the suggestions from SO posts, can you try to use Quartz renderer?

javaw -Xms128m -Xmx2048m -Dapple.awt.graphics.UseQuartz="true" -jar VietOCR.jar

[omshivaprakash]

javaw didn't work. Tried the above command with java - no luck.

[nguyenq]

Sorry, copy&paste error; it was meant to be java command. It seems to be a OSX-Java-Kannada rendering issue. We're not sure if the issue is fixed in latest Java 13 -- you may want to try it out. Otherwise, we suggest that you use another editor for viewing or editing Kannada script.

[Shreeshrii]

Hindi Works fine.

Actually even that has some errors related to the glyphs for compound letters eg. check
क्यूं
ब्लॉग
दर्जा

Seems to be a rendering problem on Mac + Java for complex script.

[omshivaprakash]

@Shreeshrii Thats correct. Could only OCR last two words

[omshivaprakash]

% java -version
java version "13" 2019-09-17
Java(TM) SE Runtime Environment (build 13+33)
Java HotSpot(TM) 64-Bit Server VM (build 13+33, mixed mode, sharing)
Seem to have resolved the issue.

Thank you for pointing this out. @nguyenq