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Remove global label/subject lookup table Consistently use "Subject" rather than "Label", subject is assumed to be convertable to QString. When desirable, map discrete subject values to ints. For classifiers such as svm that require numeric labels, generate a string->int mapping for the training data, and store it (local to the transform). Utility functions for collecting all values of a given property (on a template list), and mapping discrete property values to 0-based integers Some outstanding issues include use of label/subject in matrix output
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Remove subject/label methods from the API, replace some methods with general methods taking a property name as an argument. This breaks quite a few things
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Release a thread from the global thread pool whenever we wait for a parallel job to finish. This means we don't waste one of the global thread pool's threads, and can maintain full CPU utilization.
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Add Show2Transform (should replace ShowTransform eventually), which displays input images using QT, rather than going through openCV. Additional modifications to support doing this (since qt is quite particular about how GUI elements are created/modified). Create a QApplication instead of a QCoreApplication (if not building BR_EMBEDDED), restructure br.cpp's main to run its main work in a separate thread while the main thread sits in an event loop.
