BUILT-IN MATHEMATICA SYMBOL
FindThreshold
FindThreshold[image]
finds a global threshold value that partitions the intensity values in image into two intervals.
- FindThreshold works with any image. It converts multichannel and color images into grayscale images, and then finds a global threshold.
- FindThreshold also works with real arrays of arbitrary dimensions.
- FindThreshold[image, Method->method] specifies the method to use to determine the threshold.
- Possible settings for the Method option include:
-
| {"BlackFraction",b} | make a fraction b of all pixels black |
| "Cluster" | cluster variance maximization (Otsu's algorithm) |
| "Entropy" | histogram entropy minimization (Kapur's method) |
| "Mean" | use the mean level as the threshold |
| "Median" | use the median pixel level as the threshold |
| "MinimumError" | Kittler-Illingworth minimum error thresholding method |
- The default setting is Method->"Cluster".
Find the threshold of pixel intensities:
| Out[1]= |  |
Find the clustering threshold for an array of data:
| Out[1]= |  |
New in 8 | Last modified in 9
