Gaussian Mixture Models for Pixel Clustering


Huckleberry Finn

I have a small aerial image where human experts have marked the different terrain visible in the image. For example, an image can contain vegetation, rivers, rocky mountains, farmland, etc. Each image can have one or more of these marked areas. Using this small labeled dataset, I want to fit a Gaussian mixture model for each known terrain type. After doing this, I will have N GMMs for every N kinds of terrain that might be encountered in the image.

Now, given a new image, I want to determine which terrain each pixel belongs to by assigning the pixels to the most probable GMM. Is this the right way of thinking? If yes, how can I use GMM to cluster images

With QUIT--Anony-Mousse

If you use labeled training data, there will be no clustering!

However, you can easily use the labeling feature of the GMM cluster.

To do this, calculate the prior probability, mean and covariance matrices, and invert them. Then, use the multivariate Gaussian method in the training data to classify each pixel of the new image by the maximum probability density (weighted by the prior probability).

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