Hi James,
As per my understanding, the "extrude" function is used for creating and analyzing 3D antenna geometries. It would not directly accept a binary image and therefore is not used for general image processing cases, therefore to simulate the extrusion of a binary image in MATLAB, create a 3D matrix where each slice along the third dimension is a copy of the binary image, effectively creating a 3D block with the shape of the binary image. Then, using "isosurface" function extract the surface mesh of this 3D shape.
After creating the 3D mesh, apply the rotation transformation to the vertices "v" using the rotation metrices and display the rotated 3D model using the "patch" function.
Please refer to the code below for reference:
% Extrude the binary image
thickness = 10; % Define the thickness of the extrusion
[z, y, x] = ndgrid(1:thickness, 1:size(binaryImage, 1), 1:size(binaryImage, 2));
extrudedImage = repmat(binaryImage, [1, 1, thickness]);
% Use isosurface to extract the 3D mesh of the extruded shape
[F, V] = isosurface(x, y, z, extrudedImage, 0.5); % Extract the surface
% Apply the rotation
angleX = deg2rad(-50);
angleY = deg2rad(50);
Rx = [1, 0, 0; 0, cos(angleX), -sin(angleX); 0, sin(angleX), cos(angleX)]; % Rotation matrix around x-axis
Ry = [cos(angleY), 0, sin(angleY); 0, 1, 0; -sin(angleY), 0, cos(angleY)]; % Rotation matrix around y-axis
V_rotated = (Ry * (Rx * V.')).'; % Apply the rotations
Please refer to the MATLAB Documentation below for better understanding of the functions:
Hope this helps!
