In order to get an ideal lane marks' edge, an image preprocessing method based on edge distribution function (EDF) was proposed considering the directional characteristics of lane marks.
为了得到较理想的车道标识线的边缘，考虑车道标识线的方向特性，提出一种基于边缘分布函数(EDF)的图像预处理方法。
The effect of the block directional-based binary method for fingerprint image is mainly determined by the estimate accuracy of the block direction.
基于块方向信息的指纹图像二值化方法，其效果主要取决于能否准确的估计指纹图像的块方向图。
The directional wavelet theory provides a novel sparse representation method for image processing, and it can capture geometrical image structures more efficiently.
方向性小波理论为图像处理提供了一种新的稀疏表示方法，能够更有效地捕捉图像中的几何结构。
This paper theoretically presents the geocoding principle and method for airborne SAR system image, which is converted only by the positional and directional data from the aircraft mounted SAR.
该文论述了根据飞机地理坐标数据对机载SAR图像进行地理编码的原理和方法；
This paper theoretically presents the geocoding principle and method for airborne SAR system image, which is converted only by the positional and directional data from the aircraft mounted SAR.
该文论述了根据飞机地理坐标数据对机载SAR图像进行地理编码的原理和方法；
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