We propose a fingerprint coding algorithm based on directional image, EZW and MRWD algorithm.
在深入研究EZW和MRWD方法基础上，提出了一种结合指纹方向图的指纹压缩算法。
Firstly gain the continuously directional image of the fingerprint, secondly design orientation template using the directional image and filter the fingerprint image, lastly obtain the binary image.
先得到指纹图像的连续方向图，再根据此方向图设计方向滤波模板进行滤波，最后得到指纹的二值化图像。
The preprocessing in an automatic fingerprint identification system usually includes five steps: normalization, directional graph computation, image segmentation, filtering and binarization.
指纹预处理一般包括规格化、方向图计算、图像分割、滤波、二值化等环节，该文系统地讨论了各环节的有效算法。
Directional smoothing filter is frequently used in digital image processing for it has the double properties of noise filtering and edge preserving.
方向平滑滤波器兼有去噪和边缘保持的双重特性，在数字图像预处理中被经常采用。
To preserve image features, the nonlinear diffusion coefficients are locally adjusted according to the directional derivatives of the image.
而且为了保持图像特征，利用图像的方向导数局部地调整非线性扩散系数。
To preserve image features and fine part, the regular coefficient is locally adjusted according to the directional derivatives of the image.
为了保持图像的特征和细节，文章利用图像的方向导数局部地调整正则系数。
The prism turning theorem as first put forward in China describes the directional conjugate relation between the object and the image space, being applicable to afocal systems.
棱镜转动定理是我国首先提出的，实际上此定理描述的是物、象空间方向共轭关系，适用于无光焦度光学系统。
Technique of well logging by directional scanning image means scanning the wall of a well according to the given direction, and makes the wall of a well be unfolded to a continuous plane.
定向扫描成像测井技术，就是按照规定的方向对井壁进行扫描，把井壁展开成一个连续的平面。
It can improve the image quality of the targets by controlling the directional characteristics of incident source wavefields at the targets.
控制照明偏移是面向地质目标的快速偏移技术，它可通过控制目的层处震源波场的方向特性，改善目标区域的成像质量。
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。
Two dimensional image was obtained by transesophageal echocardiography. The thickness, wave time and velocity were showed during atrial septal motion by omni directional M mode echocardiography (OME).
应用经食管超声心动图获得二维图像，全方向M型超声显示并测量房间隔运动时的厚度、波幅时间及速度。
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。
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。
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 has proposed a optimal smoothing filter for directional filtering and image restoration, based on the maximum energy criterion.
本文从最大能量准则出发，得到了一种用于方向滤波和方向增强的平滑滤波器。
The spatial spectra of net rift for image processing have been mathematically analysed by means of 2d Fourier transform. Its directional property has been found.
本文利用二维付里叶变换对图象中网络构造的频谱作了数学分析，并指出了它的方向特点。
Our analysis shows that directional wavelet transforms can better reflect the edge information of images because they better corresponds to the characteristics of image direction and texture.
比较了方向小波变换和传统小波变换在图像边缘检测中的不同之处。分析得出方向小波变换更符合图像的方向、纹理特征，因而更能反映图像的边缘信息。
Secondly, owing to the form image skew, a skew detection and correction based on the directional single-connected chain is adopted.
其次，针对扫描图像可能产生倾斜，论文采用了一种基于有向单连通链的表单倾斜检测与校正算法对倾斜图像进行校正。
Secondly, owing to the form image skew, a skew detection and correction based on the directional single-connected chain is adopted.
其次，针对扫描图像可能产生倾斜，论文采用了一种基于有向单连通链的表单倾斜检测与校正算法对倾斜图像进行校正。
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