Digital image stabilization method and imaging device using the same

摘要

A digital image stabilization method includes taking N frames of a target image with an exposure of T, dividing each of the N frames into predetermined blocks, and selecting a reference frame from among the N frames by setting one of the blocks in each of the N frames as a reference region and comparing reference regions of the respective N frames with one another. The method further includes estimating a motion vector of each of the remaining frames based on a reference region of the reference frame, and generating a result frame by combining a weighted frame, which is obtained by mapping a weight calculated based on the estimated motion vector to each block, and a color component frame.

主权项

1. A digital image stabilization method comprising:
taking N frames of a target image with an exposure of T; dividing each of the N frames into predetermined blocks; selecting a reference frame from among the N frames by calculating the amount of motion between each frame and the other frames and selecting the one with minimal amount of motion; estimating a motion vector of each of the remaining frames based on a reference region of the reference frame, wherein the motion vector is a minimum among a sum of absolute differences (SAD) values each of which is obtained by comparing the reference region with a corresponding block in each of the remaining frames; and generating a result frame by combining a weighted frame, which is obtained by mapping a weight calculated based on the estimated motion vector to each block, and a color component frame.