移位帧累积技术中的移位参数检测研究

移位帧累积技术在抑制图像噪声的同时,避免了运动图像直接帧累积所带来的边缘模糊,从而有效地提高了运动图像的像质。准确判定目标在图像中的运动方向及移位量是移位帧累积技术的关键。提出了一种适用于运动图像序列的目标移位参数快速检测方法。该方法通过相应算法产生包含特征像素的帧差图像,并通过对特征像素的统计进行目标运动方向的判别及移位量的计算,从而实现对目标运动参数的自动检测。实验结果表明移位量的检测值与实际值具有良好的一致性。

Shift parameter detection of frame shift and integral technique

The technique of frame shift and integral can suppress image noise and avoid image smear caused by the integration of moving images. It is one of effective methods to improve the quality of moving image sequence. The detection of moving direction and shift value is the key technique of frame shift and integral. A method to detect the moving direction and shift value of the target in moving image sequence was presented. In the method, the frame difference images that include characteristic pixels were produced by the arithmetic. Numbers of the characteristic pixels were calculated to achieve the orientation judgment and the calculation of shift value. The experimental results show that the detection values of the shift value accord with the actual values.