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histogram [2012/09/13 23:40] hermann |
histogram [2012/09/14 23:02] |
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| - | ===== Histogram ===== | ||
| - | The histogram window is responsible for assigning transformations from image original values (in any range) to | ||
| - | palette range [0, 255]. The histogram curve will adjust any value smaller than the "From:" limit to 0, and any | ||
| - | value greater than the "To:" limit to 255. Any other values will be mapped using the histogram curve to the "Y" | ||
| - | coordinate on the color palette on the left. | ||
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| - | {{ :map_viewer:histogram.png?nolink& |}} | ||
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| - | ==== Transformations ==== | ||
| - | * The default transformation doesn't map any values, leaving cell values "as is". | ||
| - | * Linear transformation will map linearly any values between the "from" and "to" ranges. | ||
| - | * Equalize will construct a curve based on [[http://en.wikipedia.org/wiki/Equalization|Equalization]] | ||