= Histogram Operations = OSSIM provides histogram-based color enhancement options to change the output of your data based on a histogram file. Histogram operations include: * '''Auto''' Automatically adjust the histogram based on the min and max histogram values. * '''Match''' Automatically adjust the histogram to match another image. * '''Linear''' Linear contrast stretch using a standard deviation from the mean (e.g. 1, 2, or 3) or a user defined min/max value. Here's an example of a histogram match: [[Image(histogram_match.jpg)]] === Related Applications === * [wiki:orthoigen ossim-orthoigen] * [wiki:img2rr ossim-img2rr] === Related Links === * [http://download.osgeo.org/ossim/tutorials/pdfs/Histogram.pdf]