发明名称 |
Apparatus for calculating optical flow and camera motion using correlation matching and system model in moving image |
摘要 |
An apparatus for calculating optical flow and camera motion using correlation matching and a system model in a moving image, in which the calculation of the optical flow is executed accurately in real time, even when an image rotation or zoom change has occurred. The apparatus comprises a feature point extracting section for extracting a feature point of a sequence of input images (previous image and current image); an optical flow calculating section for calculating an optical flow by use of the feature point extracted by the feature point extracting section; a first camera motion calculating section for calculating a camera motion by use of the optical flow calculated by the optical flow calculating section; a second camera motion calculating section for eliminating an incorrect optical flow from the optical flow calculated by the optical flow calculating section and again calculating camera motion; an optical flow location estimating section for estimating a location of the optical flow by estimating a distance difference between an estimated feature point location and a current feature point location in the previous image according to the camera motion calculated by the second camera motion calculating section; and a weighted value calculating section for calculating a weighted value according to the camera motion calculated by the second camera motion calculating section and providing the weighted value to the optical flow calculating section.
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申请公布号 |
US6683677(B2) |
申请公布日期 |
2004.01.27 |
申请号 |
US20020098430 |
申请日期 |
2002.03.18 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTION |
发明人 |
CHON JAE CHOON;LIM YOUNG JAE;CHO SEONG IK;KIM KYUNG OK;YANG YOUNG KYU |
分类号 |
G06T7/00;G06T7/20;(IPC1-7):G01F3/36;G03B17/00;G06K9/00;H04N5/14;H04N9/64 |
主分类号 |
G06T7/00 |
代理机构 |
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主权项 |
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地址 |
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