How to open multiple images sequentially for text extraction and save it in a file

Question

PRACHI Sood 2020-4-30

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/522009-how-to-open-multiple-images-sequentially-for-text-extraction-and-save-it-in-a-file

回答： Srivardhan Gadila 2020-5-4

I have some 50 photos which I want to extarct the text out of from, I am saving the extracted text into a text file. Problem is the current code that I am using seems to be opening the image files from the folder randomly. How do I make sure that image file opens sequentially ?

location= 'file_path\*.jpg';
ds = imageDatastore(location);
fid = fopen('noPlate.txt', 'wt');
while hasdata(ds) 
    img = read(ds) ;             % read image from datastore
    
    ocrResults     = ocr(img)
    recognizedText = ocrResults.Text;
 
    % This portion of code writes the recognise text
    fprintf(fid,'%s\n', recognizedText);     
    fprintf(fid,'%s\n', '\n');
                           
end
fclose(fid); 
winopen('noPlate.txt')

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。

Answer 1

Srivardhan Gadila 2020-5-4

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/522009-how-to-open-multiple-images-sequentially-for-text-extraction-and-save-it-in-a-file#answer_430073

在 MATLAB Online 中打开

I think the read(ds) reads the files in the datastore in the order ds.Files{1}, ds.Files{2}, ds.Files{3}...........so on.

Once try checking the following:

subplot(1,2,1);imshow(read(ds));subplot(1,2,2);imshow(ds.Files{1});sgtitle(ds.Files{1})
subplot(1,2,1);imshow(read(ds));subplot(1,2,2);imshow(ds.Files{2});sgtitle(ds.Files{2})
subplot(1,2,1);imshow(read(ds));subplot(1,2,2);imshow(ds.Files{3});sgtitle(ds.Files{3})

Or