tesseract.detect_orientation returning wrong rotation direction after tesseract update about pyocr

[jflesch]

Thanks for the information. I will see what I can do.
Do you know on which versions of Tesseract the changes were made ?

[andyschmid]

I can't say what version this change was introduced in, but I ran into testing the latest Ubuntu 16.04 docker image. Here is the tesseract version:

tesseract 3.04.01
leptonica-1.73
libgif 5.1.2 : libjpeg 8d (libjpeg-turbo 1.4.2) : libpng 1.2.54 : libtiff 4.0.6 : zlib 1.2.8 : libwebp 0.4.4 : libopenjp2 2.1.0

[andyschmid]

Here is one solution to the change in the output fields of the tesseract command. I'm currently using this as a work-around

issue-35-patch.txt

Note: this solution is on the assumption that the Rotate field is only in the new revision, and the value returned in the Rotate field is reversed as the value of the Orientation in degrees used to be. Hopefully the tesseract developers stick to an api moving forward.

[jflesch]

Ok, I think I will use your patch as is. However, next time, please send a pull request so I can (easily) give you proper credits.

[jflesch]

Fixed: 899872b
The next planned version is 0.4.0, but I'm having problems with the support of Libtesseract. So I may have to release a 0.3.2 first instead.

Thanks for this very detailed ticket and the corresponding fix :-)