图像

So, these standards still couldn't satiate the demands of very low bit-rate applications (under 20kb/s). As to still image coding, even though the performance of wavelet image coding algorithms excel first generation image compression standard JPEG, but they will produce boring mosquito noise at low bit-rates, which are mainly located around image edges.

而在静态图像编码方面，虽然小波图像算法的编码性能远远超过第一代图像压缩标准JPEG，但它在低位率条件下也会出现蚊式噪音，主要集中在图像边缘附近，而且对于包含丰富纹理的自然图像，其编码效率也会急剧下降。

A Thermally switchable and flexible LCDs:A PDCLC sample is irradiated with a UV light through a photo-mask having the desired patterns, the CLC texture in the UV-cured region is changed from reflective planar texture to the scattered focal conic one. Additionally, the clearing temperature of the LCs in UV-cured regions is higher than that in uncured regions. Therefore, if the cell temperature is lower than Tuc-I (Tuc-I and Tc-I), the scattered patterns are displayed on the reflective background. Moreover, the addressed patterns are invisible when the cell temperature increases higher than Tc-I.

利用紫外光经过透射光罩写入图像，使聚合区域为散射之focal conic态，且该区域之相变温度较未照光区域高，故低於Tuc-I时，散射的focal conic图像显示於反射的planar结构背景上；而介於Tc-I及Tuc-I之间时，散射的focal conic图像显示於穿透的isotropic态背景上；若温度高於Tc-I时，图像与背景皆是isotropic态，亦即关闭显示图像。

This paper is to VisualC++ tool for digital image processing techniques, the basic theory, algorithm modules, thus realize thorough understanding of the basic function of image processing, including images of gray histogram equalization, image transformation, the Fourier transform and discrete cosine transform, the image enhancement processing low-pass filter high-pass filter and transformation.

本文是以VisualC++为工具，对数字图像处理技术的基本理论、模块算法做了深入的了解，从而实现图像处理基本功能，其中包括图像的灰度变换，直方图均衡，图像傅里叶变换和离散余弦变换，图像增强处理中的低通滤波和高通滤波变换。

First, an initial projection matrix is obtained through homography between an image and a scene plane. The homograph matrix between two images, i. e., the image plane and the scene plane, can then be calculated from matching points of these two images. Thus the projection matrix of every next frame can be calculated from homograph matrix between the current image plane and the previous one. Registration of virtual objects is finally completed.

根据这个原理，首先通过一个景物平面和图像之间的单应得到初始状态相机的投影矩阵，然后对后面每帧图像和前一帧进行自然特徵点匹配，通过匹配点对计算出图像之间以及图像与景物平面的单应关系，由此就可以得到每一帧图像对应的相机的投影矩阵，从而完成虚拟物体的注册。

Generally, the main research points in this paper are as follows:Image Stitching is one of the key technology in virtual reality construction,we proposes two ambient light independent panorama mosaics methods based on feature: image stitching algorithm based on stationary wavelet decomposition and homomorphic filtering, and image stitching algorithm based on ring projection and energy function optimization.

主要研究内容如下：图像拼接是虚拟场景建模的主要技术之一，针对光照变化图像序列提出了两种基于特征的图像拼接算法：基于静态小波序贯特征匹配和同态滤波的图像拼接算法以及基于圆投影和能量函数优化的图像拼接算法。

This paper introduce a way to remove the thin cloud of CBERS- 02 CCD,first decompose the image of CCD,and then homomorphic filter the image of decomposed,last reconstruct the image of en- hanced.

为了促进CBERS-02星CCD传感器图像的定量化应用，在对以往有关遥感图像薄云去处方法的研究的基础上，本文提出了对含薄云的CBERS-02 CCD图像进行适当层次的小波分解，然后对分解的图像进行同态滤波，最后进行图像重构而去除薄云的方法。

System structure of the Neighborhood Image Frame Buffer is presented,aiming at the problem of the data stream of high speed image processing,especially the storing and accessing of the neighborhood image data.

本文针对高速图像处理的数据流问题，特别是邻域图像数据的并行存取问题，提出了邻域图像帧存储体的体系结构，实现了帧存储体邻域图像数据的并行存取，极大地提高了图像处理的速度。

SDRAM is used as image storage, which can store many frames image data to provide the foundation for the correlation operation between frames. FIFO is a data buffer for real-time image. All of these make the image processing system simple design, decreasing the write-read time and solving the question of transmission and delay, and allowing the data processing and the data grabbing at the same time. The processed results can be output in 20ms, so the bandwidth of the C6000-based image processing system is improved.

系统采用SDRAM作为图像存储器，可以存储多帧图像数据，为实现帧相关运算奠定了基础，实时图像数据采用FIFO作为缓存，使系统设计简单，读取速度快，解决了数据传输的瓶径问题，同时也减少了传输延时，实现了对图像数据边采集边处理，减少了系统的滞后时间，当场给出电视脱靶量，提高了图像处理系统的带宽。

Meanwhile image acquisition is the basis of image processing, compressing and recognizing, so the research on image acquisition system is very important and valuable.

同时图像采集也是进行图像处理、图像压缩、图像识别的基础，所以对图像采集系统的研制有着重要的现实意义和价值。

And these works can't be completed without a set of high-speed image acquisition system. Meanwhile image acquisition is the basis of image processing, compressing and recognizing, so the research on image acquisition system is very important and valuable.

同时图像采集也是进行图像处理、图像压缩、图像识别，从而实现视频监控的基础，所以对图像采集系统的研制有着重要的现实意义和价值。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了