Review of Optical Flow Estimation

Optical flow has application in object division, object recognize, object tranjactory and etc.

Criterion Standard

Precision: concentrate in small region not a large range.

Universalism: using in most of scenery.

Robustness: not be sensitive to noise.

Computation Complexity: be fast.

Methods

Differential equation:

(This method is bad especially in violent motion scenery. As this method is based on the hypothesis that luma is unchanged)



Matching

Block matching in a window based on the hypotheses that object just has position moving. Using SSD to calculate the matching.









Energy Based method







Phase Based Method











Neuronal Networks

I dont know…