Histogram.peaks

Histogram.peaks(**kwargs: Any) → ndarray | list[ndarray]

Histogram peaks

Parameters:

kwargs – parameters passed to findpeaks

Returns:

positions of histogram peaks

Return type:

ndarray(M), list of ndarray

For a greyscale image return an array of grey values corresponding to local maxima. For a color image return a list of arrays of grey values corresponding to local maxima in each plane.

Example:

>>> from machinevisiontoolbox import Image
>>> hist = Image.Read('street.png').hist()
>>> hist.peaks(scale=20)
array([ 40., 197., 153.])

(Source code, png, hires.png, pdf)

Note the first peak (at 8) is excluded because the maxima window ($x pm 20$) extends outside the histogram range.

Seealso:

findpeaks