monotonymonotonymonotonyMonotonyMonotony (Operator)

Name

monotonymonotonymonotonyMonotonyMonotony — Calculating the monotony operation.

Signature

Description

The operator monotonymonotonymonotonyMonotonyMonotony calculates the monotony operator. Thereby the points which are strictly smaller than the current grayvalue will be counted in the 8 neighborhood. This number will be entered into the output imaged.

If there is a strict maximum, the value 8 is returned; in case of a minimum or a plateau, the value 0 will be returned. A ridge or a slope will return the corresponding intermediate values.

The monotony operator is often used to prepare matching operations as it is invariant with regard to lightness modifications.

Parallelization

• Multithreading type: reentrant (runs in parallel with non-exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Automatically parallelized on tuple level.
• Automatically parallelized on channel level.
• Automatically parallelized on domain level.

Parameters

Example (C)

/* searching the strict maximums */
gauss_image(Image,&Gauss,5);
monotony(Gauss,&Monotony);
threshold(Monotony,Maxima,8.0,8.0);

Possible Predecessors

binomial_filterbinomial_filterbinomial_filterBinomialFilterBinomialFilter, gauss_imagegauss_imagegauss_imageGaussImageGaussImage, median_imagemedian_imagemedian_imageMedianImageMedianImage, mean_imagemean_imagemean_imageMeanImageMeanImage, smooth_imagesmooth_imagesmooth_imageSmoothImageSmoothImage, invert_imageinvert_imageinvert_imageInvertImageInvertImage

Possible Successors

thresholdthresholdthresholdThresholdThreshold, exhaustive_matchexhaustive_matchexhaustive_matchExhaustiveMatchExhaustiveMatch, disp_imagedisp_imagedisp_imageDispImageDispImage

Alternatives

local_maxlocal_maxlocal_maxLocalMaxLocalMax, topographic_sketchtopographic_sketchtopographic_sketchTopographicSketchTopographicSketch, corner_responsecorner_responsecorner_responseCornerResponseCornerResponse

Module

Foundation