First, the information of the foreground areas in current frame is obtained with global motion estimation and image registration between current frame and temporally adjacent frames.
首先，对待合成视频，通过全局运动估计与补偿，将相邻帧在空间上对齐到当前帧。通过计算帧差，得到当前帧中的运动前景区域信息。
The present invention has image pick-up to obtain image in sequence, and takes sample frame and current frame to estimate moving speed vector and calculate image displacement.
本发明提供的方法与装置，利用影像撷取装置以循序方式撷取数字影像，取出样本帧与当前帧，估计移动速度向量，并计算影像的位移量。
Background of image is corrected by using the current frame for motion compensation based on temporal integration.
当前帧与校正后背景图像作差得到差分图像。
Firstly build a background image in the complex background with a moving object and obtain initial object contour from the current image by frame-difference.
首先利用自适应的背景提取算法从带有运动目标的复杂背景中构建背景图，并提取出运动目标轮廓。
Firstly build a background image in the complex background with a moving object and obtain initial object contour from the current image by frame-difference.
首先利用自适应的背景提取算法从带有运动目标的复杂背景中构建背景图，并提取出运动目标轮廓。
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