A highly efficient video compression method for vehicle data recorder

• Main Authors: Jai-Wei Gong, 龔家瑋
• Other Authors: Shi-Wu Lo
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/17178552029895642042

碩士 === 國立中正大學 === 資訊工程所 === 98 === With any movement or rotation behavior, when the camera device shoot in the film. The original stationary object will have a movement change towards inverse direction on the screen. However, for the motion estimation of H.264 video encoder, it has to do the motion prediction and motion vector search to find the best-match motion vector. If the camera movement or rotation can be detected before the H.264 motion estimation calculates, then we can greatly reduce the calculation. This paper present a method, though a MEMS dual-axis gyroscope to sensing camera shoot in any direction of rotation to assist the motion estimation of H.264 video encoder. By the expense of 0.007 dB less than the overall video quality it can greatly increase the H.264 encoding performance more than 3 times.