How to read images with positive integer? No imead()

2 次查看（过去 30 天）

Wenyi Xiao 2019-4-26

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/458716-how-to-read-images-with-positive-integer-no-imead

编辑： madhan ravi 2019-4-26

I want to import images into matlab workspace, they should contain positive integers and zeros. If I use imread(), they will be all zeros.

3 个评论
显示 1更早的评论隐藏 1更早的评论

Geoff Hayes 2019-4-26

Wenyi - can you attach one of these images so that we can take a look at it? Or describe the images - what type are they? What is the integer type (8-bit, 16-bit, etc.)?

Wenyi Xiao 2019-4-26

编辑：Wenyi Xiao 2019-4-26

Here are pictures.

I have 1500 pictures like these.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Catalytic 2019-4-26

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/458716-how-to-read-images-with-positive-integer-no-imead#answer_372420

编辑：Catalytic 2019-4-26

在 MATLAB Online 中打开

I definitely don't get all zeros with imread. Problem solved?

>> nnz(imread('C0039_100122_INDS.png'))
ans =
        4624
>> nnz(imread('C0039_101785_INDS.png'))
ans =
       12177

3 个评论
显示 1更早的评论隐藏 1更早的评论

Wenyi Xiao 2019-4-26

编辑：madhan ravi 2019-4-26

在 MATLAB Online 中打开

images_data = cell(1500,1);
for S = 1:size(want_files,1)
    images_data{S,1} = imread(pngFile_names{want_files(S,1),1}); %load image data from 1500 matched files
end

this is the code I used.

Wenyi Xiao 2019-4-26