Find black images in a file

2 次查看（过去 30 天）
Sara Antonio
Sara Antonio 2017-1-18
评论： Sara Antonio 2017-1-18
Hello, So I have this file with jpg images (more than 5000 images), and some of them are completely black. I want to know how many black images I have in my file. I never worked with loading and doing loops with jpg images so I don't know how to generate the code. I was thinking on doing a loop where if the sum of the pixels would be zero (all pixels black), then it would be a black image, else a color image. The problem is that I don't know how to address the pixels in the image matrix.
Thanks in advance!

请先登录，再回答此问题。

采纳的回答

Image Analyst
Image Analyst 2017-1-18
Yes, you can do that. First use one of the code samples in the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F
Before the loop, put this:
count = 0;
In the middle of the loop, put this:
theSum = sum(sum(imageArray));
if theSum == 0
count = count + 1;
blackFiles{count} = fullFileName; % Or whatever
end

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Image Processing Toolbox 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by