How to use RGB buffer with tesseract?

Question

Basic tesseract example uses

auto pixs = pixRead(argv[1]);

to read a TIF image.

However, it isn't clear how to use an RGB buffer (not read from a file).

I tried to find out about Pix but the documentation isn't very clear.

Later it does

tess.SetImage(pixs);

maybe there's a way but I couldn't find the documentation.

Answer 1

That documentation is for a very old version of Leptonica. The current version supports reading image from memory buffer. Look for pixReadMem* methods.

https://github.com/DanBloomberg/leptonica/blob/master/src/allheaders.h

Answer 2

You do not need to create PIX - you can directly set image data to tesseract with SetImage . See eg example of putting OpenCV mat to tesseract .