Use imwrite to save processed images to different folder.

2020 10 12
1 个回答
更新时间：2020 10 13
8 次查看（30 天）

0 个投票

Dear all,
I need help with saving processed images to different folder with imwrite.
Currently, I can save all processed images to a single folder.
Img_filename=ls('C:\Users\User\Desktop\Guanlin_CNN1D\CNN1D\GF_BSIF\*.jpg');
imageSize = size(Img_filename);
Img_filenum = size(Img_filename,1);
for img=1:Img_filenum
img_temp=double((rgb2gray(imread(Img_filename(img,:)))));
-----------processing--------
count = count+1;
FileName = fullfile('C:\Users\User\Desktop\Guanlin_CNN1D\CNN1D\GF_BSIF\folder_1',sprintf('%03d_circle_cropped.jpg',count));
imwrite(MM, FileName)
end
However, I have 1000 different images in 1 folder and after processing, it will generate 500 images and wanted to save the first 500 processed images into folder_1. And the second 500 processed images to folder_2 and the third 500 images to folder_3 and so on...
How to re-write the imwrite function?
Thank you!

请先登录，再回答此问题。

回答（1 个）

Image Analyst
Image Analyst 2020-10-12

0 个投票

folder = sprintf('C:\Users\User\Desktop\Guanlin_CNN1D\CNN1D\GF_BSIF\folder_%3.3d', img);
baseFileName = sprintf('%03d_circle_cropped.jpg', img);
FileName = fullfile(folder, baseFileName);

7 个评论
显示 5更早的评论 隐藏 5更早的评论

Guan-Lin Chen
Guan-Lin Chen 2020-10-13
Hi,
Thanks for the help.
I run the code and have an errer:
Warning: Escaped character '\U' is not valid. See 'doc sprintf' for supported special characters.
Could you please help me check?
Thank you!
Guan-Lin Chen
Guan-Lin Chen 2020-10-13
one thing I forgot to mention is that I have 1000 different images in 1 folder and after processing, it will generate 500 images and wanted to save the first 500 processed images into folder_1. And the second 500 processed images to folder_2 and the third 500 images to folder_3 and so on...
Image Analyst
Image Analyst 2020-10-13
Either use double backslashes, or use forward slashes. If you're using Windows, Windows handles forward slashes just fine.
Guan-Lin Chen
Guan-Lin Chen 2020-10-13
Thank you!
Could you please help me re-write the function?
Since for each process, 500 images will be generate, and I have 1000 images to be processed, which means there will be 1000*500 images in total.
How to save first batch to my first folder_1, and the second batch to my folder_2 and so on and so forth?
Guan-Lin Chen
Guan-Lin Chen 2020-10-13
Img_filename=ls('C:\Users\User\Desktop\GF_BSIF\*.jpg'); % has 1000 images
Img_filenum = size(Img_filename,1);
count = 0;
for I=1:Img_filenum
Img = imread(Img_filename(I,:));
imageSize = size(Img);
c_row= 50; %center of circle row value. DON'T CHANGE
radius= 50; %radius of circle
StepSizeRow= 50;
StepSizeCol= 50;
%%
c_col=50; %center of circle column value. CHANGE BY 120
col_min= c_col-radius+1; %column val left side of bounding box. CHANGE BY 120
col_max= c_col+radius; %column val right side of bounding box. CHANGE BY 120
[cols, rows, rgb]= size(Img);
for j = c_col:StepSizeCol: cols-radius
row_min=c_row-radius+1; %row val top of bounding box. DON'T CHANGE
row_max=c_row+radius; %row val bottom of bounding box. DON'T CHANGE
for i= c_row:StepSizeRow:rows-radius
ci = [j, i, radius]; % center and radius of circle ([c_col, c_row, r]) og size (1920, 2560)
[xx,yy] = ndgrid((1:imageSize(1))-ci(1),(1:imageSize(2))-ci(2));
mask = uint8((xx.^2 + yy.^2)<ci(3)^2);
croppedImage = uint8(zeros(size(Img)));
croppedImage(:,:,1) = Img(:,:,1).*uint8(mask);
croppedImage(:,:,2) = Img(:,:,2).*uint8(mask);
croppedImage(:,:,3) = Img(:,:,3).*uint8(mask);
sp(1) = col_min; %min(floor(p(1)), floor(p(2))); %xmin
sp(2) = row_min; %min(floor(p(3)), floor(p(4))); %ymin
sp(3) = col_max; %max(ceil(p(1)), ceil(p(2))); %xmax
sp(4) = row_max; %max(ceil(p(3)), ceil(p(4))); %ymax
row_min=row_min+StepSizeRow;
row_max=row_max+StepSizeRow;
% Index into the original image to create the new image
MM = croppedImage( sp(1): sp(3),sp(2):sp(4),:);
%Display the subsetted image with appropriate axis ratio
count = count+1;
%FileName = fullfile('C:\Users\User\Desktop\Tensorflow\1cm 0.27H circle cropped',sprintf('Cropped_Parallel_5x_20_400Radius_%d.jpg',count));
%FileName = fullfile('C:\Users\User\Desktop\GF_BSIF\temp',sprintf('%03d_circle_cropped.jpg',count));
folder = sprintf('C:\Users\User\Desktop\Guanlin_CNN1D\CNN1D\GF_BSIF\folder_%d',I)
baseFileName = sprintf('%03d_circle_cropped.jpg', count);
FileName = fullfile(folder, baseFileName);
imwrite(MM, FileName)
I try to rewite the function but have error:
Warning: Escaped character '\U' is not valid. See 'doc sprintf' for supported special characters.
> In batch_crop (line 53)
Error using imwrite (line 528)
Unable to open file "C:\001_circle_cropped.jpg" for writing. You might not have write permission.
Error in batch_crop (line 56)
imwrite(MM, FileName)
Guan-Lin Chen
Guan-Lin Chen 2020-10-13
Just figure it out!!!
Thank you!!!!

请先登录，再进行评论。

类别

在 帮助中心 和 File Exchange 中查找有关 Desktop 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by