Estimates, Based On The Moving Target Detection And Speed Of The Level Set

A moving-object-detecting and velocity-estimating system was proposed which takes video sequence as input for the problem of moving object detection and velocity estimation. This system can realize the detection of the non-rigid moving object and the estimation of the background velocity through the Level-Set method and piece-wise smooth motion field constraint. A novel method was proposed which based on the implicit representation coming from the Level-Set method to estimate the velocities along the boundaries of the moving object. This novel approach represents the moving object's boundaries by the signed-distance graph and then estimates the velocities along the motion boundaries through the calculation of the optical-flow. The experimental results show that the novel approach is accurate and robust and the estimation of the velocities of the points along the boundaries next to each other is pretty continuous.