发明名称 |
Digital processing method and system for determination of optical flow |
摘要 |
A method and system for determining an optical flow field between a pair of images is disclosed. Each of the pair of images is decomposed into image pyramids using a non-octave pyramid factor. The pair of decomposed images is transformed at a first pyramid scale to second derivative representations under an assumption that a brightness gradient of pixels in the pair of decomposed images is constant. Discrete-time derivatives of the second derivative image representations are estimated. An optical flow estimation process is applied to the discrete-time derivatives to produce a raw optical flow field. The raw optical flow field is scaled by the non-octave pyramid factor. The above-cited steps are repeated for the pair of images at another pyramid scale until all pyramid scales have been visited to produce a final optical flow field, wherein spatiotemporal gradient estimations are warped by a previous raw optical flow estimation.
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申请公布号 |
US8355534(B2) |
申请公布日期 |
2013.01.15 |
申请号 |
US20090555472 |
申请日期 |
2009.09.08 |
申请人 |
SPINELLA IP HOLDINGS, INC.;GADDY WILLIAM L. |
发明人 |
GADDY WILLIAM L. |
分类号 |
G06K9/00 |
主分类号 |
G06K9/00 |
代理机构 |
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