Histogram adjustment

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Histogram adjustment

Histogram adjustment

Histogram adjustment category determines values for automatic histogram adjustment. The settings are used in the Convert raster files tool if Fit automatically for the Image histogram adjustment is switched on.

The adjustment routine first builds a histogram of pixel intensity values for red, green, and blue channels separately. For each color channel, it determines a boundary location at the low end and at the high end of the histogram. A percentage value defines the lowest and highest intensity pixels that are outside the boundary. Then, the intensity values are remapped so that the low end boundary and the high end boundary are moved to the specified values.

SETTINGS:

EFFECT

Boundary

Percent of pixels on the lowest and highest ends of the histogram that are outside the boundary.

Move to - low value

Value to which the low-end boundary is moved.

Move to - high value

Value to which the high-end boundary is moved.