Gray image thresholding using the Triangle Method (Scripts) Publisher's description
from Bernard Panneton
The Triangle method is due to Zack (Zack GW, Rogers WE
The Triangle method is due to Zack (Zack GW, Rogers WE, Latt SA (1977), "Automatic measurement of sister chromatid exchange frequency", J. Histochem. Cytochem. 25 (7): 741вЂ“53.
A line is constructed between the maximum of the histogram at b on the gray level axis and the lowest (or highest depending on context) value a on the gray level axis where the histogram is significantly larger than 0. The distance L normal to the line and between the line and the histogram is computed for all values from a to b. The level where the distance between the histogram and the line is maximal is the threshold value (level). This technique is particularly effective when the object pixels produce a weak peak in the histogram.
System Requirements:MATLAB 7.5 (R2007b)
Program Release Status: New Release
Program Install Support: Install and Uninstall