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    • 10. 发明授权
    • Method and apparatus for displacement determination by motion compensation with progressive relaxation
    • 用渐进放松运动补偿进行位移测定的方法和装置
    • US09584756B2
    • 2017-02-28
    • US14328121
    • 2014-07-10
    • Wei Chen
    • Wei Chen
    • G06K9/00H04N7/18H04N5/225H04N7/01H04N19/52H04N19/51
    • H04N7/0137H04N19/51H04N19/52
    • Motion estimator apparatus and methods are presented in which a fully constrained nonlinear system of equations combining forward and backward displaced frame difference equations with a plurality of displacement vector invariant equations is solved using the input data from two image frames without approximation and without any additional constraints or assumptions to obtain an estimated displacement field. Also presented is an adaptive framework for solving a system of motion estimation equations with an integer valued block size defining a number of node points within an image, the number of node points being less than or equal to a number of pixels within the image, and a cost function based on a nonlinear least-squares principle. A system of iteration equations for the motion field on node points is solved using an iterative technique, and a degree of over-constraint can be progressively relaxed by selectively reducing the block size during the iteration.
    • 提出了一种运动估计器装置和方法,其中使用来自两个图像帧的输入数据来解决具有多个位移向量不变方程组合的前向和后向位移帧差分方程的完全约束的非线性方程组,并且没有任何附加约束或 获得估计位移场的假设。 还提出了一种用于解决具有定义图像内的多个节点点的整数值块大小的运动估计方程组的自适应框架,节点数量小于或等于图像内的像素数,以及 基于非线性最小二乘原理的成本函数。 使用迭代技术解决节点上的运动场的迭代方程组,并且可以通过在迭代期间选择性地减小块大小来逐渐放宽过度约束的程度。