a large number of pixels and find out where on the brightness/darkness scale those pixels are. • Std Dev (Standard Deviation) is how homogeneous the pixel spike height is in a certain range. It tells (swrite stream table form) This is the same as the write-smart-html procedure described in ftp://ftp.std.com/pub/gjc/www95- paper.html. (sxhash data modulus) Computes a recursive hash of the data with respect

restricted to the selected range: • Mean : the mean value of the interval in the selected channel. • Std Dev : Standard deviation. Gives an idea about how homogeneous the distribution of values in the interval Preview, Split view These options are common to GEGL-based filters. Please refer to Section 17.2. Std. Dev. Increasing this Standard Deviation lowers the filter threshold and more image details are taken