th_concavity.m File Reference

T = th_concavity(I,n) More...

Functions
function T =	th_concavity (I, n)
	T = th_concavity(I,n)

Detailed Description

T = th_concavity(I,n)

Function Documentation

th_concavity()

function T = th_concavity	(		I,
			n )

T = th_concavity(I,n)

Find a global threshold for a grayscale image by choosing the threshold to be in the shoulder of the histogram.

In

I grayscale image n maximum graylevel (defaults to 255)

Out

T threshold

References:

A. Rosenfeld and P. De La Torre, "Histogram concavity analysis as an aid in threshold selection," IEEE Transactions on Systems, Man, and Cybernetics, vol. 13, pp. 231-235, 1983.

P. K. Sahoo, S. Soltani, and A. K. C. Wong, "A survey of thresholding techniques," Computer Vision, Graphics, and Image Processing, vol. 41, pp. 233-260, 1988.

% Copyright (C) 2004-2013 Antti Niemistö % % This file is part of HistThresh toolbox. % % HistThresh toolbox is free software: you can redistribute it and/or modify % it under the terms of the GNU General Public License as published by % the Free Software Foundation, either version 3 of the License, or % (at your option) any later version. % % HistThresh toolbox is distributed in the hope that it will be useful, % but WITHOUT ANY WARRANTY; without even the implied warranty of % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the % GNU General Public License for more details. % % You should have received a copy of the GNU General Public License % along with HistThresh toolbox. If not, see http://www.gnu.org/licenses/.

References flocmax(), hbalance(), hconvhull(), max, and n.

Referenced by mibHistThresController.continueBtn_Callback(), and mibHistThresController.previewBtn_Callback().

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