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how to use the regionprops max(area)?

2 次查看（过去 30 天）
tsai kai shung
tsai kai shung 2017-10-30
if true
clear all;
clc;
img = imread('40.jpg');
tic
I = rgb2hsv(img);
channel1Min = 0.956; channel1Max = 0.006;
channel2Min = 0.594; channel2Max = 0.886;
channel3Min = 0.529; channel3Max = 0.780;
sliderBW = (I(:,:,1) >= channel1Min ) | (I(:,:,1) <= channel1Max) &(I(:,:,2) >= channel2Min ) & (I(:,:,2) <= channel2Max) & (I(:,:,3) >= channel3Min ) & (I(:,:,3) <= channel3Max);
BW = sliderBW;
bw3 = areaimg(BW);
%bw3 = ratioimg(bw3);
imshow(bw3);
S = regionprops(bw3,'BoundingBox','Area');
BW_2 = imcrop(img,[S.BoundingBox(1,:)]);
imshow(BW_2);
end
i want to crop the max(area) image but show the error:
Expected one output from a curly brace or dot indexing expression, but there were 5 results.
Error in numbertestok (line 22) BW_2 = imcrop(img,[S.BoundingBox(1,:)]);
how to use the max area as i want to extract the image

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