Hi, I’m working on extracting boundary points from an image, but the output appears inverted. How can I correctly extract boundary points so the image restoration matches the original orientation? Here’s my current MATLAB code:
clear all;
img = imread(‘parol.png’); % Replace with your image file
grayImg = rgb2gray(img); % Convert to grayscale
bwImg = imbinarize(grayImg); % Convert to binary image

% Invert the binary image if necessary
bwImg = imcomplement(bwImg);

% Fill holes in the binary image
bwImg = imfill(bwImg, ‘holes’);

% Get boundary points
boundaries = bwboundaries(bwImg);

% Extract the main boundary points
boundaryPoints = boundaries{1};

% Plot the boundary points
figure;
subplot(1,2,1)
imshow(img);
subplot(1,2,2)
plot(boundaryPoints(:,2), boundaryPoints(:,1), ‘r’, ‘LineWidth’, 2);
hold off;
daspect([1 1 1]);

Thanks!Hi, I’m working on extracting boundary points from an image, but the output appears inverted. How can I correctly extract boundary points so the image restoration matches the original orientation? Here’s my current MATLAB code:
clear all;
img = imread(‘parol.png’); % Replace with your image file
grayImg = rgb2gray(img); % Convert to grayscale
bwImg = imbinarize(grayImg); % Convert to binary image

% Invert the binary image if necessary
bwImg = imcomplement(bwImg);

% Fill holes in the binary image
bwImg = imfill(bwImg, ‘holes’);

% Get boundary points
boundaries = bwboundaries(bwImg);

% Extract the main boundary points
boundaryPoints = boundaries{1};

% Plot the boundary points
figure;
subplot(1,2,1)
imshow(img);
subplot(1,2,2)
plot(boundaryPoints(:,2), boundaryPoints(:,1), ‘r’, ‘LineWidth’, 2);
hold off;
daspect([1 1 1]);

Thanks! Hi, I’m working on extracting boundary points from an image, but the output appears inverted. How can I correctly extract boundary points so the image restoration matches the original orientation? Here’s my current MATLAB code:
clear all;
img = imread(‘parol.png’); % Replace with your image file
grayImg = rgb2gray(img); % Convert to grayscale
bwImg = imbinarize(grayImg); % Convert to binary image

% Invert the binary image if necessary
bwImg = imcomplement(bwImg);

% Fill holes in the binary image
bwImg = imfill(bwImg, ‘holes’);

% Get boundary points
boundaries = bwboundaries(bwImg);

% Extract the main boundary points
boundaryPoints = boundaries{1};

% Plot the boundary points
figure;
subplot(1,2,1)
imshow(img);
subplot(1,2,2)
plot(boundaryPoints(:,2), boundaryPoints(:,1), ‘r’, ‘LineWidth’, 2);
hold off;
daspect([1 1 1]);

Thanks! image processing, boundary point MATLAB Answers — New Questions

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