Segment an image using Otsu's method for automated threshold detection. The threshold is selected to maximize the inter-region variance and minimize the intra-region variance. Returns optimal threshold values and binary image maps.
Arbitrary bit-depth images with any number of channels.
Type: Image File (net.imagej.Dataset)
The channel index. Each channel of each source image is processed separately.
Type: Integer (int)
The optimal threshold value which maximizes inter-class variance:
ωa(t) ωb(t) [μa(t) - μb(t)]2
Here, t is the threshold value, ωa(t)
and ωb(t) are the number of pixels in
each class, and μa(t) and μb(t)
are the mean pixel values of each class.
Type: Numeric (double)
Binary images of each image channel segmented according to the computed optimal threshold value.
Type: Image File (net.imagej.Dataset)
Nobuyuki Otsu (1979). “A threshold selection method from gray-level histograms”. IEEE Trans. Sys., Man., Cyber. 9 (1): 62–66. doi:10.1109/TSMC.1979.4310076
