运动模糊图象中运动方向的自动检测算法

Identification of Blur Direction from Motion Blurred Images

匀速直线运动模糊图象中运动方向的检测是图象恢复过程的重要步骤之一。对运动模糊图象实施方向微分 ,根据方向微分图像灰度值 (绝对值 )分布的特点 ,首先给出了计算任意角度的方向微分的公式 ,然后将微分图象灰度值 (绝对值 )通过灰度线性变换 ,求取和值中的极大值来自动且有效地识别出运动方向 。

The identification of blur direction in motion-blurred images is one of the most important steps for image restoration . Based on the distribution of the absolute values of pixels of different directional derivative of a image , a derivation formula is introduced for the direction derivation of the motion-blurred image , and gray level transformation is then applied to the absolute values of the pixels of directional derivative of the image . Finally , motion direction is identified automatically and correctly by measuring the direction where the summation of the absolute transformed values of the pixels of the image derivative is highest .