Digital image stabilization device

摘要

A method of Digital Image Stabilization (DIS) including a feature point sorting algorithm for selecting optimal feature points, and a computationally efficient tile-vector based Hierarchical Block-Matching search algorithm for deriving motion vectors of the selected feature points, and a feature point motion vector grouping/comparison process for grouping pairs of the selected feature points based on their vector magnitude ratio and their angular difference.

主权项

1. A method of processing video data using a video processing circuit, comprising:
receiving first image data that represents a first frame; identifying a plurality of feature points in the first frame; receiving second image data that represents a second frame; deriving a plurality of motion vectors, each of the plurality of motion vectors corresponding to each respective feature point; selecting a first vector and a second vector among the plurality of motion vectors; and comparing the first vector with the second vector based on a vector magnitude ratio and a vector angular difference of the first vector and the second vector.