Target recognition application research with gradient magnitude and direction

The paper presents a target recognition method with magnitude and direction of gradient in mid-resolution optical remote sensing images. Firstly, the directional texture is analyzed and a fast location method based on the gradient blurring process is realized. Secondly, the target characteristic like geography, gray, geometry are analyzed and described. Finally, using the shape character distance, the target is successfully matched, measured and recognized. Experiment results show that this automatic recognition method is effective, and the new location algorithm of the common directional texture based on gradient blurring is very promising and potentially useful for the sequent recognitions of targets.