ConvChain | Bitmap generation from a single example

ConvChain is a C# library. ConvChain has no bugs, it has no vulnerabilities and it has low support. However ConvChain has a Non-SPDX License. You can download it from GitHub.

ConvChain is a Markov chain of images that converges to input-like images. That is, the distribution of NxN patterns in the outputs converges to the distribution of NxN patterns in the input as the process goes on. In the examples a typical value of N is 3. How to construct such a process? We want the final probability of a given pattern to be proportional to the pattern's weight, where pattern's weight is the number of such patterns in the input. For this it is sufficient that a stronger condition is satisfied: the probability of a given state (image) S should be proportional to the product of pattern weights over all patterns in S. Fortunately, there are general methods to build a Markov chain that has the desired probability distribution over states as its stationary distribution.