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Two-Frame Optical Flow Formulation in an Unwarping Multiresolution Scheme

机译:无扭曲多分辨率方案中的两帧光流公式化

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In this paper, we propose a new formulation of the Differential Optical Flow Equation (DOFE) between two consecutive images considering spatial and temporal information from both. The displacement field is computed in a Markov Random Field (MRF) framework. The solution is done by minimization of the Gibbs energy using a Direct Descent Energy (DDE) algorithm. A hybrid multiresolution approach, combining pyramidal decomposition and two-step multigrid techniques, is used to estimate small and large displacements. A new pyramidal decomposition method without warping process between pyramid levels is introduced. The experiments carried out on benchmark dataset sequences show the effectiveness of the new optical flow formulation using the proposed unwarped pyramid decomposition schema.
机译:在本文中,我们提出了一种在两个连续图像之间考虑到来自两个图像的空间和时间信息的微分光流方程(DOFE)的新公式。位移场是在马尔可夫随机场(MRF)框架中计算的。该解决方案通过使用直接下降能量(DDE)算法将吉布斯能量最小化来完成。结合了金字塔分解和两步多网格技术的混合多分辨率方法用于估计小位移和大位移。介绍了一种新的金字塔分解方法,该方法无需在金字塔等级之间进行扭曲处理。在基准数据集序列上进行的实验表明,使用提出的未扭曲的金字塔分解方案,新光流公式的有效性。

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