如何从Matlab图像中删除直线?

下面是使用霍夫变换方法的答案。稍后,我将为下面的代码添加更多解释:

% I crop only the intresting part for illustration:
BW = edge(Two_dim(1:1000,:),'canny');
subplot 131
imagesc(Two_dim(1:1000,:))
title('Original image')
axis xy
[H,theta,rho] = hough(BW); % preform Hough transform
subplot 132
P = houghpeaks(H,10,'NHoodSize',[1 1]); % find the peaks in the transformation
lines_found = houghlines(BW,theta,rho,P,...
    'FillGap',50,'MinLength',1); % convert the peaks to line objects
imagesc(Two_dim(1:1000,:)), hold on
result = Two_dim(1:1000,:);
for k = 1:length(lines_found)
   % extract one line:
   xy = [lines_found(k).point1; lines_found(k).point2];
   % Plot the detected lines:
   plot(xy(:,1),xy(:,2),'LineWidth',1,'Color','green');
   % remove the lines from the image:
   % note that I take a buffer of 3 to the 'width' of the line
   result(xy(1,2):xy(1,2)+3,xy(1,1):xy(2,1)) = 0;
end
title('Detected lines')
axis xy
subplot 133
imagesc(result)
title('Corrected image')
axis xy

你可以看看行强度和。只要这些线保持水平,它们就会脱颖而出。

grayI = rgb2gray(I);

rowSums = sum(grayI,2);

plot(rowSums);

filterRows = rowSums > 1*10^5

I(filterRows,:,:) = 255;

regionprops

你可以这样做。

Two_dim(Two_dim<0.5) = 0;
Two_dim(Two_dim>=0.5) = 1; # the actual value doesn't matter

或

Two_dim = logical(Two_dim);