Success. Many thanks to the people at the Pattern Recognition and Image Analysis Research Lab (PRImA) for producing tools to handle this. You can obtain them freely on their website or github. Below I give the full solution for a Mac running 10.10 and using the homebrew package manager. I use wine to run windows … Read more
Don’t know how good it is (it definitely needs to be trained first), but there is Ron Cemer’s Java OCR library.
You can probably type faster than you can clean up images and install OCR engines: #!/usr/bin/perl (my$d=q[AA GTCAGTTCCT CGCTATGTA ACACACACCA TTTGTGAGT ATGTAACATA CTCGCTGGC TATGTCAGAC AGATTGATC GATCGATAGA ATGATAGATC GAACGAGTGA TAGATAGAGT GATAGATAGA GAGAGA GATAGAACGA TC GATAGAGAGA TAGATAGACA G ATCGAGAGAC AGATA GAACGACAGA TAGATAGAT TGAGTGATAG ACTGAGAGAT AGATAGATTG ATAGATAGAT AGATAGATAG ACTGATAGAT AGAGTGATAG ATAGAATGAG AGATAGACAG ACAGACAGAT AGATAGACAG AGAGACAGAT TGATAGATAG ATAGATAGAT TGATAGATAG … Read more
Although the documentation suggests that you can set which format the image data should arrive from the camera in, in practice you often have a choice of one: NV21, a YUV format. For lots of information on this format see http://www.fourcc.org/yuv.php#NV21 and for information on the theory behind converting it to RGB see http://www.fourcc.org/fccyvrgb.php. There … Read more
Look at ABBYY’s Android OCR lib (paid) Tesseract JNI wrapper (free) Look at this stackoverflow post
Python3/OpenCV4 script to align scanned documents. Rotate the document and sum the rows. When the document has 0 and 180 degrees of rotation, there will be a lot of black pixels in the image: Use a score keeping method. Score each image for it’s likeness to a zebra pattern. The image with the best score … Read more
From your input image, you need to make text as white, and background as black You need then to compute the rotation angle of your bill. A simple approach is to find the minAreaRect of all white points (findNonZero), and you get: Then you can rotate your bill, so that text is horizontal: Now you … Read more
Until now this option is not available. The current version is Tesseract 5.
In short, you would have to train the Tesseract engine to recognize the handwriting. Take a look at this link: Tesseract handwriting with dictionary training This is what the linked post says: It’s possible to train tesseract to recognize handwriting. Here are the instructions: https://tesseract-ocr.github.io/tessdoc/Training-Tesseract But don’t expect very good results. Academics have typically gotten … Read more
There are multiple ways to go about detecting text in an image. I recommend looking at this question here, for it may answer your case as well. Although it is not in python, the code can be easily translated from c++ to python (Just look at the API and convert the methods from c++ to … Read more