Line detect the length of a pixel in image processing

Hi, I have one image with a lot of vertical lines. I want to know number of lines and length of each of the lines. Please help me. Thanks

[Image Analyst]

Here's some help: http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

Usually when people want advice on image analysis, they attach and image. That would explain a lot, like whether the image is gray scale, color, computer graphics, blurry, lines are wiggly, etc. What can we say until we see your image?

[roya a]

Thanks for your help. I attached my image.

my code:

II=0;

for i=2:378

    for j=1:377

        if (image(i,j)==255 && image(i-1,j)==0)
            ii=i;
            I=0;
%             ii,j
              while(image(ii,j)==255)
                  I=I+1;
                  if (ii<377)
                     ii=ii+1;
                  end

              end
            I;
%             ii,j
            II=II+1;
        end

    end
end
   II

But my code doesn't work correctly. Thanks

Answer 1

[Image Analyst]

There are thousands of vertical lines there, if you call a vertical line a series of white pixels in a single column with no breaks in it. You can count them simply by labeling the image using 4-connectivity

[labeledImage, numberOfRegions] = bwlabel(binaryImage, 4);

Now, some of those white blobs may be horizontal, or rounded blobs, so you might want to call regionprops and check the PixelIdxList property to make sure all the pixels in each blob are in the same column. Use unique on the x (column) coordinates for that.

[Image Analyst]

roya's "Answer" moved here because it's not an answer to the original question, but actually a response to me.

Thanks for your attention. I want to find vertical lines with Width of a pixel.Also I want to find length of each of the line. But use the BWlabel can not find lines with Width of a pixel. It find connected objects in image. is it correct? My code work very slow and I can not get my favorite result. Please guidance me Thanks

[roya a]

Thanks for your attention. I want to find vertical lines with Width of a pixel.Also I want to find length of each of the line. But use the BWlabel can not find lines with Width of a pixel. It find connected objects in image. is it correct? My code work very slow and I can not get my favorite result. Please guidance me Thanks

[Image Analyst]

Run the attached code to produce this image. Adapt as needed.

[roya a]

Thanks. It is great. Thank you so much for your help.