Computing inverse optical flow
نویسندگان
چکیده
منابع مشابه
Fast Optical Flow Using Dense Inverse Search
Most recent works in optical flow extraction focus on the accuracy and neglect the time complexity. However, in real-life visual applications, such as tracking, activity detection and recognition, the time complexity is critical. We propose a solution with very low time complexity and competitive accuracy for the computation of dense optical flow. It consists of three parts: 1) inverse search f...
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متن کاملFast Optical Flow using Dense Inverse Search Supplementary Material
where ∇It+1 is the image gradient at W(x; u). ∂W ∂u denotes the Jacobian of the warp. Writing the partial derivatives in ∂W ∂u with respect to a column vector as row vectors, this simply becomes the 2 × 2 identity matrix for the case of optical flow. There is a closed-form solution for parameter update ∆u using a least-squares formulation. Setting to zero the partial derivative of eq. (3) with ...
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ژورنال
عنوان ژورنال: Pattern Recognition Letters
سال: 2015
ISSN: 0167-8655
DOI: 10.1016/j.patrec.2014.09.009