ADAPTIVE MOTION DECISION SYSTEM FOR DIGITAL IMAGE STABILIZER BASED ON EDGE PATTERN MATCHING

摘要

The present invention determines the motion vector adaptively in response to the irregular image by correlation environment generated from the plurality of local motion-detection area also receives data from the digital image stabilization unit. For this purpose, it generates a statistical parameter and the local motion vector to check the reliability by checking a state of correlation arising from each of the local motion-detection area. After statistical analysis of the variables and it is determined whether an irregular image data for inhibiting the reliability of the local motion vector. At this time, an irregular video environment is a video signal, video signal, etc. with a repetitive movement with a video signal, a moving object having a low contrast. Also isolated by analyzing the local motion vector is also obtained and the stability and generates a weight signal to a pre-set relative dielectric according to the calculation result. Since there is the output of the weighting control signal in accordance with the result of the reliability judgment signal, the output is cut off if the irregular image data weighted signal. And a field motion vector is multiplied by the local motion vector corresponding to the weight signal is generated by averaging them again.; Finally, the attenuation of the previous cumulative motion vector, and the value obtained by adding the previous cumulative motion vector and the motion vector field attenuation to generate the accumulated motion vector.