My question is regarding classifying the images based on the whichever color is present more in the given image after converting the color image into gray and finding its histogram.

1 次查看（过去 30 天）

snehal jaipurkar 2016-12-3

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/315215-my-question-is-regarding-classifying-the-images-based-on-the-whichever-color-is-present-more-in-the

编辑： snehal jaipurkar 2016-12-7

clc;
Image = imread('rose.jpg');
figure
imshow(Image);
I=rgb2gray(Image);
figure
imshow(I)
[count,x] = imhist(I)
index1 = find(x == 67);
index2 = find(x == 100);
numPixels = sum(count(index1:index2))

This code worked well up to finding the sum of number of pixels from one intensity range to other.

Now I am having few images. Some of them have red pixels in large amounts,some have white, some have blue, etc. I have to classify these images as blue, white, red, etc. after finding histogram and counting pixels in certain range. How can I do that?

Or is there any other way to do this classification?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Image Analyst 2016-12-3

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/315215-my-question-is-regarding-classifying-the-images-based-on-the-whichever-color-is-present-more-in-the#answer_245834

You just need to set up some rules, like if the mean red count from the histogram is more than the mean blue and green counts. See my File Exchange for color demos. http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

9 个评论
显示 7更早的评论隐藏 7更早的评论

Image Analyst 2016-12-7

Did you see where I said " it was released way back in 2012 but maybe you have an ancient version of MATLAB." Well, 2010 is 2 years before atan2d was released. You'll have to see how you can build it yourself with atan() or atand(). Search the Mathworks web site for the description of atan2d().

snehal jaipurkar 2016-12-7