How do i fix this interference on my surf plot

Im making a 3D scanner using a moire pattern and my reconstruction of my object (a half sphere), looks kind of weird, with peaks along the edges. How do i fix this?

Answer 1

[Abhinaya Kennedy]

It looks like you’re encountering edge artifacts in your 3D reconstruction. You can try:

• Applying a smoothing filter to your data to reduce noise. Gaussian or median filters are commonly used for this purpose.

smoothedData = imgaussfilt(yourData, 2); % Adjust the second parameter as needed

• Using edge detection algorithms to identify and correct the peaks. Functions like edge and imfill can be helpful.

edges = edge(yourData, 'Sobel');
filledData = imfill(edges, 'holes');

• Adjusting the threshold parameters in your reconstruction algorithm to minimize the impact of noise.

threshold = 0.5; % Example threshold value
yourData(yourData < threshold) = 0;

• Ensuring that your moiré pattern setup is correctly calibrated and that there are no errors in data acquisition.
• Using post-processing techniques to refine the reconstructed surface. Functions like smooth3 can help.

smoothedSurface = smooth3(yourData, 'box', [5 5 5]);