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zhang8826857

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[ Last edited by zhang8826857 on 2012-6-8 at 15:18 ]
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kk_2010

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zhang8826857: ½ð±Ò+5, ¡ïÓаïÖú 2012-06-11 10:52:02
3Â¥2012-06-07 02:41:42
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H_LG

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zhang8826857: ½ð±Ò+5, ¡ïÓаïÖú 2012-06-11 10:52:10
matlab×Ô´øµÄgraythreshÓõľÍÊÇostu·½·¨£º
help graythresh

GRAYTHRESH Compute global image threshold using Otsu's method.
    LEVEL = GRAYTHRESH(I) computes a global threshold (LEVEL) that can be
    used to convert an intensity image to a binary image with IM2BW. LEVEL
    is a normalized intensity value that lies in the range [0, 1].
    GRAYTHRESH uses Otsu's method, which chooses the threshold to minimize
    the intraclass variance of the thresholded black and white pixels.

    Class Support
    -------------
    The input image I can be of class uint8, uint16, or double and it
    must be nonsparse.  LEVEL is a double scalar.

    Example
    -------
        I = imread('coins.png');
        level = graythresh(I);
        BW = im2bw(I,level);
        imview(BW)

    See also im2bw.

    Reference page in Help browser
       doc graythresh
ÐĮ̈ѧԺѧÉúÂÛ̳£ºhttp://www.xtxybbs.com
5Â¥2012-06-07 08:43:27
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H_LG

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6Â¥2012-06-07 08:44:44
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½ð³æ (СÓÐÃûÆø)

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7Â¥2012-06-07 09:36:48
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zhang8826857: ½ð±Ò+5, ¡ïÓаïÖú 2012-06-11 10:52:26
ÓÉÓÚͼÏñ±³¾°½Ï´ó£¬ÏÈ×öµ×ñ±ä»»£¬ÔÚÓÃmatlabµÄotsuº¯Êý£»
clear;clc;
a=imread('*.jpg');
a=rgb2gray(a);

b=imbothat(a,strel('disk',10));
t=graythresh(b);
c=im2bw(b,t);
subplot(3,1,1);imshow(a,[]);
subplot(3,1,2);imshow(b,[]);
subplot(3,1,3);imshow(c,[]);
8Â¥2012-06-07 20:59:51
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zhang8826857

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)

9Â¥2012-06-11 10:52:41
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