monotonymonotonyMonotonymonotonyMonotonyMonotony (Operator)

Name

monotonymonotonyMonotonymonotonyMonotonyMonotony — Calculating the monotony operation.

The operator monotonymonotonyMonotonymonotonyMonotonyMonotony 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

ImageImageImageImageImageimage (input_object) (multichannel-)image(-array) → object (byte / int2 / uint2)

Input image.

ImageMonotonyImageMonotonyImageMonotonyImageMonotonyImageMonotonyimageMonotony (output_object) (multichannel-)image(-array) → object (byte / int2 / uint2)

Result of the monotony operator.

Number of elements: ImageMonotony == Image

Example (C)

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

Possible Predecessors

binomial_filterbinomial_filterBinomialFilterbinomial_filterBinomialFilterBinomialFilter, gauss_filtergauss_filterGaussFiltergauss_filterGaussFilterGaussFilter, median_imagemedian_imageMedianImagemedian_imageMedianImageMedianImage, mean_imagemean_imageMeanImagemean_imageMeanImageMeanImage, smooth_imagesmooth_imageSmoothImagesmooth_imageSmoothImageSmoothImage, invert_imageinvert_imageInvertImageinvert_imageInvertImageInvertImage

Possible Successors

thresholdthresholdThresholdthresholdThresholdThreshold, exhaustive_matchexhaustive_matchExhaustiveMatchexhaustive_matchExhaustiveMatchExhaustiveMatch, disp_imagedisp_imageDispImagedisp_imageDispImageDispImage

Alternatives

local_maxlocal_maxLocalMaxlocal_maxLocalMaxLocalMax, topographic_sketchtopographic_sketchTopographicSketchtopographic_sketchTopographicSketchTopographicSketch, corner_responsecorner_responseCornerResponsecorner_responseCornerResponseCornerResponse

Module

Foundation

Operators