How to apply a common function to complete directory?

Hi,

I want to match and detect an input image with all images contained in a folder using for loop.

For this what i did is

srcFiles = dir('path of the folder');% the folder in which ur images exists
for i = 1 : length(srcFiles)

filename = strcat('path of the folder',srcfiles(i).name);
I = rgb2gray(imread(filename));
    figure, imshow(I);
end
boxImage = rgb2gray(imread(' path of an input image');
figure;
imshow(boxImage);
title('Image of a Box');
for i = 1 : length(srcFiles)
    boxPoints = detectSURFFeatures(boxImage);
scenePoints = detectSURFFeatures(I);
figure;
imshow(boxImage);
title('100 Strongest Feature Points from Box Image');
hold on;
plot(selectStrongest(boxPoints, 100));

title('300 Strongest Feature Points from I');
hold on;
plot(selectStrongest(scenePoints, 300));

[boxFeatures, boxPoints] = extractFeatures(boxImage, boxPoints);
[sceneFeatures, scenePoints] = extractFeatures(I, scenePoints);

boxPairs = matchFeatures(boxFeatures, sceneFeatures);
matchedBoxPoints = boxPoints(boxPairs(:, 1),:);
matchedScenePoints = scenePoints(boxPairs(:, 2),:);

figure;
showMatchedFeatures(boxImage, I,matchedBoxPoints, ...
matchedScenePoints,'montage');
title('Putatively Matched Points (Including Outliers)');

[tform, inlierBoxPoints, inlierScenePoints] = ...
estimateGeometricTransform(matchedBoxPoints, matchedScenePoints, 'affine');

figure;
showMatchedFeatures(boxImage, I, inlierBoxPoints, ...
inlierScenePoints, 'montage');
title('Matched Points (Inliers Only)');

boxPolygon = [1, 1;... % top-left
size(boxImage, 2), 1;... % top-right
size(boxImage, 2), size(boxImage, 1);... % bottom-right
1, size(boxImage, 1);... % bottom-left
1, 1]; % top-left again to close the polygon

newBoxPolygon = transformPointsForward(tform,boxPolygon);
newBoxPolygon1 = transformPointsForward(tform, boxPolygon);
figure;
imshow(I);
hold on;
x=line(newBoxPolygon(:, 1),newBoxPolygon1(:, 2), 'Color', 'g');
title('Detected Box');

end

This is the source code which i was tried, but i am not getting exact requirement. It is showing only one matched image from all images eventhough there are having some more similar images w.r.t an input image. can somebody help me?

Thanks in advance

Answer 1

[Jan]

The posted code will not display the wrong results, but it will not even run at all. There is at least a missing parenthesis.

srcFiles = dir('path');% the folder in which ur images exists

Are you aware, that you have to replace 'path' with the name of the folder you find the images in? Better:

Folder = <your folder comes here> 
srcFiles = dir(Folder);% the folder in which ur images exists
for i = 1 : length(srcFiles)
  filename = fullfile(Folder, srcfiles(i).name);
  I = rgb2gray(imread(filename));
  figure, imshow(I);
end

Now a lot of figures are opened. But I assume you want to include the rest of the processing in the loop also.

So omit:

boxImage = rgb2gray(imread('path');    % Line failes due to missing )

But use

boxImage = I;

and join both loops.

[Sindoora Pottavathini]

Thank u so much for spending your valuable time on this question and for sharing answer.

And ya i am aware of writing folder name instead of path by replacing it. boxImage is used for reading an input image. So,how should i omit that line? Can you please understand the code and explain me in detail