图像压缩

It is used to realize on-the-spot signal gathering, autodial and giving the alarm, and long-range control. The second part is the module of image processing, which is the problem that is mainly solved by the system.

第二部分是图像处理单元，也是该系统重点解决的问题，其关键是对图像进行压缩编码，采用软硬件结合的方式达到图像压缩的目的。

Image compression technology is one of the most important technology in communication.

图像压缩技术是通信领域中十分关键的技术之一，因此图像压缩编码的研究具有重要的理论和实际意义。

In this paper, an improved technique of static image compression is completed based on the JPEG standard, the technique uses a new Fourier analysis technique called the arithmetic Fourier transform to compute discrete cosine transform coefficient.

本文在国际标准组织制定的静态图像压缩标准JPEG的基础上，提出了一种采用新的傅立叶分析技术—算术傅立叶变换来快速计算离散余弦变换系数值，改进了静态图像压缩技术，克服了DCT运算速度慢的缺点，同时克服了传统的快速离散余弦变换程序复杂，子进程多的缺点。

Contents : Chapter 4 Image Enhancement (contrast enhancement, gray transform, histogram dressing, image smoothing, sharpening, Pseudo-color and false color enhancement); Chapter 5 of Image Restoration (inverse filter rehabilitation, Wiener filtering method); Chapter 6 of image processing orthogonal transformation Fourier transform, discrete cosine transform (DCT, the Walsh transform, Based on the eigenvectors of transformation, Hotelling transform, SVD transform, wavelet transform, Mallat algorithm; Chapter 7 Image Coding Hoffman (Huffman coding, arithmetic coding, RIc, the bit-plane coding, predictive coding, DPCM.

内容：第4章图像增强（对比度增强、灰度变换法、直方图修整法、图像平滑、图像锐化、伪彩色和假彩色增强）；第5章图像复原（逆滤波复原、维纳滤波方法）；第6章图像处理中的正交变换（傅立叶变换、离散余弦变换、沃尔什变换、基于特征向量的变换、霍特林变换、SVD变换、小波变换、Mallat算法）；第7章图像压缩编码（霍夫曼编码、算术编码、游程编码、位平面编码、预测编码、DPCM、JPEG 2000编码

The paper mainly describes the development,type and application of image compression technology,and make...

论文主要介绍图像压缩技术的发展、分类及应用，并着重分析了几种主要的图像压缩技术的实现原理。

This article is based on the MATLAB6.5 picture processing toolbox, uses the M-file document to carry on the experiment which the programming compiles to instruct the book, mainly introduced some basic picture processing methods, match colors, a picture minute color including the picture, the image compression, the demonstration picture color chart and so on.

本文是基于MATLAB6.5 的图像处理工具箱，采用M-file文件进行编程而编写的实验指导书，主要介绍了一些基本的图像处理方法，包括图像配色、图像分色、图像压缩、显示图像的色图等。

First, in chapter one, the necessity of image compression is dissertated.

第一章首先介绍了图像压缩编码的研究意义、基本原理与方法，然后介绍了静态图像和动态图像压缩的相关国际标准。

Based on the simulations and evaluations of this method, an efficient FPGA implementation based on IBISS-A-1300 CMOS Image Sensor is presented. The whole architecture was optimized in the pipeline design, tew line buffers instead of large memory to get higher hardware utilization and speed, so it can process Bayer image in real time and create good condition for coding and transmission.

在对算法进行仿真评估基础上提出了基于COMS图像传感器IBIS5-A-1300的图像压缩FPGA实现方案，整个结构采用流水线设计，同时用少量行缓存代替传统的大容量存储，节省了存储资源，加快了运算速率，减小了电路规模，经验证明完全满足对Ba-yer图像实时处理的要求，为后续实时压缩编码和传输提供了有利条件。

ABSTRACT The technology of image compression gains more attention in information society; wavelet transform is one of research hotpots on image compression field. It is a good technical realization method for high efficiency compression.

图像压缩技术在当前的信息化社会中得到越来越多的重视，而小波变换技术是目前图像压缩领域的一个研究热点，它是实现高效压缩的一个技术手段。

Based on this idea,a new method of no-reference objectively assessing image quality is presented.The DCT coefficients of the ac component can be approximated as a Laplacian distribution.

假设图像的DCT系数是Laplacian分布，首先根据JPEG图像的DCT系数估计出图压缩前的DCT系数分布参数，并由此估算出图像压缩前、后DCT系数的均方误差值。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。