Video Loop Finding

Implement a method to find optimal loop points for creating seamless video textures. This task involves analyzing the similarity between frames in a video sequence to determine the best points to loop back, creating a continuous and smooth visual experience.

The concept of video textures is based on the idea of creating an infinite video loop from a finite video sequence, which is crucial in various applications such as video games, animation, and virtual reality. To achieve this, we need to compute a frame-to-frame similarity matrix, which represents the similarity between each pair of frames in the sequence.

Here are the key steps to find the optimal loop points:

1. Compute the similarity between each pair of frames $(i, j)$
2. Identify pairs where $j > i + min\_length$ to ensure a sufficient gap between the loop points
3. Determine if the transition between the two frames would be smooth

This technique is widely used in video game development to create immersive and engaging environments.