For accepting a maximum, this area must not containĪny point with a value higher at than the maximum. In other words, a threshold is set at the maximum value minus noise tolerance and theĬontiguous area around the maximum above the threshold is analyzed. (calibrated units for calibrated images). "Noise Tolerance" - Maxima are ignored if they do not stand out from the surroundings by more than this value.ThisĬommand is based on a plugin contributed by Michael Schmid.Ī dialog box is displayed with the following options: Unweighted average of the colors depending on the Edit>Options>Conversions settings. With the maxima, or one segmented particle per maximum, marked.įor RGB images, maxima of luminance are selected, with the luminance defined as weighted or The final image is produced by combining the two derivatives using the square root of the sum of the squares.ĭetermines the local maxima in an image and creates a binary (mask-like) image of the same size Two 3x3 convolution kernels (show below) are used to generate vertical and horizontal derivatives. Uses a Sobel edge detector to highlight sharp changes in intensity in the active image or selection. This filter uses the following weighting factors to replace each pixel with a weighted average of the 3x3 neighborhood. Increases contrast and accentuates detail in the image or selection, but may also accentuate noise.
This filter replaces each pixel with the average of its 3x3 neighborhood. Home | contents | previous | next Process Menuīlurs the active image or selection.
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