Samsung Electronics Co., Ltd.

Matthias Braun

SungSoo Park

Erwin Sai Ki Liu

A method of operating a video processor is provided. The method includes receiving a first image data representing a first frame of a scene, dividing at least a central portion of the first frame into a plurality of tiles, identifying feature point candidates in the first image data, selecting a set of feature points within each specific tile based on the luminance variance &#x3c3;2 of the specific tile, receiving a second image data representing a second frame of the scene, deriving feature point motion vectors between the first and second frames corresponding to the identified feature, grouping the motion vectors into motion vector groups based on vector magnitude ratios and angular differences, and calculating the affine transform of each group of motion vectors.

Image processing circuit, method of operation thereof, and digital camera including same

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.

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Mountain View, CA, United States of America

Matthias Braun