Reconstructing 3D from two stereo images

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Jenko Nguyen
Jenko Nguyen le 22 Mar 2022
I am trying to reconstruct 3D from two stereo grayscale images. The reason im using grayscale because it show vein's depth. But the disparity map and pointcloud doesn't show much information from images. Here the code
clear all
close all
I1 = im2double(imread('back_left_10_n1.png'));
I2 = im2double(imread('back_right_10_n1.png'));
[G1, G2] = rectifyStereoImages((I1),(I2),stereoParams);
A = stereoAnaglyph(G1,G2);
title('Red-Cyan composite view of the rectified stereo pair image')
disparityMap = disparity(im2gray(G1),im2gray(G2)) ;
imshow(disparityMap,[0 64],'InitialMagnification',50);
title('Disparity Map');
colormap jet
points3D = reconstructScene(disparityMap, stereoParams);
% Convert to meters and create a pointCloud object
points3D = points3D ./ 500;
ptCloud = pointCloud(points3D,"Intensity",G2);
% Create a streaming point cloud viewer
player3D = pcplayer([-1, 2], [-1, 2], [0, 4], 'VerticalAxis', 'y', ...
'VerticalAxisDir', 'down');
% Visualize the point cloud
view(player3D, ptCloud);

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Birju Patel
Birju Patel le 27 Avr 2022
You will need to calibrate the stereo camera used to capture your images. In the code you posted, you're using calibration parameters from a specific stereo camera setup:
This won't match your setup and will return in meaningless disparity values.

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