There is a function to generete 3d gaussian noise in mesh or point cloud??
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You can generate normally-distributed random values with randn. For a point cloud for example, if you have 100 points with x, y, z values, you can create a noise array to add to the point array:
I understand that you are looking to estimate the difference between two point clouds by extracting difference. I assume that you mean extracting and comparing features between two point clouds. You can perform this task by using the extractFPFHFeatures function to extract the features and the pcmatchfeatures function to find matching features between both of the point clouds. The pcmatchfeatures documentation contains an example that shows you how to perform this.
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