Calculating the monotony operation.
The operator monotony 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.
Image (input_object) |
image(-array) -> object |
Input image. |
ImageMonotony (output_object) |
image(-array) -> object |
Result of the monotony operator. | |
Number of elements: ImageMonotony == Image |
/* searching the strict maximums */ gauss__(Image,&Gauss,5); monotony(Gauss,&Monotony); threshold__(Monotony,Maxima,8.0,8.0);
gauss__, median, mean__, smooth__, invert
threshold__, match__, disp_image
local_max, topographic_sketch, corner_response__