Construct directed acyclic graph for image

Construct DAG from image based on different region after segmentation

Answer 1

[Kartik Pontula]

From what I understand, this is how your problem should be approached in MATLAB (this is merely a pseudo-code):

% Perform image segmentation using an appropriate algorithm such as k-means clustering, watershed segmentation, or graph cuts.
% This will divide the image into different regions or segments.
segmented_image = perform_segmentation(image);

% Assign each segmented region a unique label or identifier.
labels = unique(segmented_image);
num_regions = numel(labels);

% Create an adjacency matrix to represent the relationships between different regions.
% The adjacency matrix will have dimensions equal to the number of regions, with each element indicating the presence or absence of a connection between two regions.
adjacency_matrix = zeros(num_regions);

% Traverse the segmented image to determine the neighboring regions for each region.
% You can use techniques like 8-connectivity or 4-connectivity to define the neighborhood relationships.
for i = 1:num_regions
    % Get the current region label
    current_label = labels(i);
    
    % Find neighboring regions
    neighboring_labels = find_neighboring_labels(segmented_image, current_label);
    
    % Update adjacency matrix
    adjacency_matrix(i, neighboring_labels) = 1;
end

% Create a graph object from the adjacency matrix
G = graph(adjacency_matrix);

% Visualize the DAG
plot(G);

Note that you may need to implement the find_neighboring_labels function based on the connectivity criteria you choose. Also, replace perform_segmentation with the specific segmentation algorithm you'd like to use.

Hope this helps!