Package net.sourceforge.javaocr.filter

Class Summary

AbstractIntegralImageFilter
AbstractSinglePixelFilter	abstract base class for filters operating on single pixels
GrayscaleToRGBA	transform pixel from grayscale to RGBA (well, actually ARGB)
HistogramFilter	collect image histogram and perform useful calculations on it
IntegralImageFilter	computes integral image.
LookupTableFilter	apply lookup table to image
MedianFilter	applies median filter to image (pixel is Mx from his surrounding window) result is collected in destination image.
NormaliseGrayscaleFilter	normalise grayscale pixels linear basing on min/max values
RangeFilter	gather min and max values from supplied pixels
RGBAToGrayscale	converts RGBA image to grayscale
SauvolaBinarisationFilter	Performs local image threshloding with Sauvola algorithm.
SquaredIntergalImageFilter	like integral image filter, but sum up squares (useful in various calculations)
ThresholdFilter	perform threshold filtering TODO: do we need to make this via threshold? Yep - 'if' is still faster than lookup in array