spatial coherence constraint


get more equations for a pixel
pretend the pixel’s neighbors have the same (u,v)
use window
![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2Fffcaacac-40b8-4252-99af-1d68c1d926d6%2FUntitled.png?table=block&id=b2c52686-a088-4fe1-bb23-2f43a3d3ad89&cache=v2)

### Solvability









