A heuristic measure for detecting undesired influence of lossy JP2 compression on OCR in the absence of ground truth
Analysing the impact of JPEG2000 compression on the OCR.
Requires the following tools to be installed:
- ImageMagick (command: convert) - for removing TIF compression if need be
- Kakadu (commands: kdu_compress, kdu_expand) for encoding/decoding TIF images to JP2
- Tesseract for OCR
- Apache Java-library in <taverna-home>/lib: commons-lang-2.4.jar for the CalculateLevenshteinDistance Beanshell's dependency
- Gnuplot for creating a diagram for demonstrating the result
Workflow has been designed to be executed on a linux system, some variables, like the temporary directory "/tmp/" would have to be changed for other operating systems.
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