From Ohm


The simplest use case of color-mapping is thresholding.

This means that the scalar value are compared to a specific threshold value. If the threshold is exceeded the original gray-scale color of the data is substituted with a replacement color.

Thresholding is a standard technique of image manipulation applications such as gimp:

ThresholdingBefore ThresholdingAfter

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Page last modified on November 18, 2013, at 12:06 PM