Description: 零树编码小波图象压缩编解码程序.这是1.1版,可实现可变吗率编解码.动态显示.只能打开24真彩色位位图,如果是JPEG格式,叙用画图板打开,存为
24真彩色位位图即可.此外还有升级版本,可处理灰度图及保存解码后的位图.
下面附件为1.1版,须安装MFC才能打开.
-zerotree wavelet image compression encoding codecs procedures. This is version 1.1, yet achievable variable rate codec. dynamic display. only 24 open spaces true color bitmap, in the case of JPEG format, Service drawing board to open deposit of 24 true-color bitmap can be. In addition, upgrading versions, deal with the gray level and the preservation of the decoder bitmap. Below annex to the 1.1 version can be installed MFC open. Platform: |
Size: 21424 |
Author:余庆红 |
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Description: 输入：为需要压缩图象的名称,该主程序仅能构处理256灰度图,读者可以自行改编为RGB处理；ratio为压缩比率；level为小波分解的级数
输出:是解压完毕的图象数据矩阵-input : the need for image compression name, the main program can only handle 256 gray level structure, Readers can own adaptation of RGB; ratio of compression ratio; wavelet decomposition level for the series output : is finished unpacking the image data matrix Platform: |
Size: 54779 |
Author:林颖 |
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Description: 输入：为需要压缩图象的名称,该主程序仅能构处理256灰度图,读者可以自行改编为RGB处理；ratio为压缩比率；level为小波分解的级数
输出:是解压完毕的图象数据矩阵-input : the need for image compression name, the main program can only handle 256 gray level structure, Readers can own adaptation of RGB; ratio of compression ratio; wavelet decomposition level for the series output : is finished unpacking the image data matrix Platform: |
Size: 54272 |
Author:林颖 |
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Description: This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious.
-This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious.
Platform: |
Size: 3072 |
Author:Ho Joon Lee |
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Description: This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious.
-This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious.
Platform: |
Size: 95232 |
Author:Ho Joon Lee |
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Description: The following implementation steps have been made for the devised algorithm, which is based on 2D-wavelet.
1. Reading an image of either gray scale or RGB image.
2. Converting the image into grayscale if the image is RGB.
3. Decomposition of images using wavelets for the level N.
4. Selecting and assigning a wavelet for compression.
5. Generating threshold coefficients using Birge-Massart strategy.
6. Performing the image compression using wavelets.
7. Computing and displaying the results such as compressed image, retained energy and Zero coefficients.
8. Decompression the image based on the wavelet decomposition structure.
9. Plotting the reconstructed image.
10. Computing and displaying the size of original image, compressed image and decompressed image. Platform: |
Size: 1024 |
Author:fer |
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Description: fractal image compression of gray scale images....
only works for square images...
try with lena.bmp a gray scale one....
good compression ratio acheived Platform: |
Size: 4096 |
Author:Koushik |
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Description: 本书介绍了各种数字图像处理的算法及编程实现技术。全书由13章和一个附录组成。主要内容包括:位图基础、图像的显示、图像的几何变换、图像灰度变换、图像的平滑处理、图像锐化处理及边缘检测、图像分割及测量、图像的形态处理学、图像的变换域处理及应用、图像的合成、24位彩色图像的处理、图像的小波变换和JPIG图像的压缩编码。
本书介绍了近90种图像处理的技术,这些技术与编程实例相结合,提供了VC++编程步骤,图像处理的编程代码,并且处理前的图像可与处理之后的图像对照比较。实例程序的框架结构简单,代码简洁,使初学VC++者很快就能编写图像处理的程序代码。
本书可作为高等院校计算机工程、信息工程、生物医学工程、智能机器人学、工业自动化、模式识别及相关学科的教师、研究生、本科生、专科生的教材或参考书,亦可供有关工程技术人员参考。-This book presents a variety of digital image processing algorithms and programming techniques. Book is composed of 13 chapters and an appendix. The main contents include: the bitmap based image display, image geometric transformation, image gray level transformation, image smoothing, image sharpening and edge detection, image segmentation and measurement, image processing morphological study, the image of the transform domain processing and applications, image synthesis, 24-bit color image processing, the wavelet transform and JPIG image compression.
This book describes nearly 90 kinds of image processing technologies, and programming examples of these technologies combine to provide a VC++ programming steps, image processing, programming code, and handle pre-processed image with the image comparisons. Simple example program framework, the code simple, so beginners can quickly VC++ by writing image processing code.
This book can serve as institutions of higher learning c Platform: |
Size: 25216000 |
Author:微筱柒 |
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Description: 实现图像灰度级的压缩，并且将压缩后的图像进行均衡化，通过检测无误，-Gray level of image compression, and the compressed image equalization, by detecting the correct Platform: |
Size: 1024 |
Author:yuzhiyi08 |
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Description: 该函数可将输入值低于m的灰度级压缩为输出图像中较暗灰度级的较窄范围内，可将输入值高于m的灰度级压缩为输出图像中较亮灰度级的较窄范围内，输出的是一副具有较高对比度的图像。-This function can be lower than the input value for compressed grayscale m output image is dark gray level of a narrow range, but will the input value is higher than the gray level compression for m output image lighter gray level of a narrow range, the output is a pair of high contrast images. Platform: |
Size: 1024 |
Author:zhangping |
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Description: 详细说明：
读入图像，对于图像进行高斯高通以及低通滤波，显示结果，与原图进行对比-Detail: ch5_1_1: image gray-scale linear transformation (5.1.1) ch5_1_2: image grayscale piecewise linear transformation (5.1.1) ch5_1_3: using the transfer function of the number of forms of dynamic range compression (5.1. 1) ch5_1_4: histogram equalization (5.1.2) ch5_1_5: histogram specification (5.1.2) ch5_2_1: neighborhood average linear smoothing filter method to achieve noise reduction (5.2.2) ch5_2_2: winner filtering method to achieve noise reduction (5.2.2) ch5_2_3: median filtering to achieve noise reduction (5.2.2) ch5_2_4: linear sharpen filter (5.2.3) ch5_2_5: Rui filtering nonlinear (5.2. 3) ch5_3_1: Buterworth low-pass filter (5.3.1) ch5_3_2: Buterworth high-pass filter (5.3.2) ch5_4_1: gray-scale layering of color images to achieve (5.4.2) ch5_4_2: spatial domain gray level- the color transform, image enhancement (5.4.2) ch5_4_3: Mean Filter for each color plane true color image filtering (5.4.3) ch5_5_1: noise image generation (5.5.4) ch5_5_2: the target image generat Platform: |
Size: 2347008 |
Author:王小龙 |
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Description: 计算 机一共输出多少个哈夫曼编码/霍夫曼编码
计算在删去0灰度级压缩之前的原始图像字节容量
unzipped_delete=i*8
计算压缩比率
计算图像的压缩比率
- Of total output of the computer how many Huffman/Huffman encoding 0 gray level calculated by deleting the original image before compression byte capacity unzipped_delete = i* 8 of image compression ratio is calculated compression ratio Platform: |
Size: 30720 |
Author:zhaoru |
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Description: mage compression is one of the most important step in image transmission and storage. Most of the state-of-art image compression techniques are spatial based. In this code, a histogram based image compression technique is implemented based on multi-level image thresholding. The gray scale of the image is divided into crisp group of probabilistic partition Platform: |
Size: 729088 |
Author:md adil |
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Description: 该压缩包里面包含各种图像预处理，灰度变换，直方图均衡化，均值滤波，中值滤波等一系列的图像预处理程序-The compression package which contains a variety of image processing, gray level transformation, histogram equalization, the mean filtering, median filtering, image preprocessing program Platform: |
Size: 2048 |
Author:潘丽锋 |
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Description: 进行适当的灰度变换来达到灰度级压缩的目的.-By analyzing the histogram of the texture image, we do the appropriate gray-scale transformation to achieve the purpose of gray-level compression without affecting the quality of the texture as much as possible Platform: |
Size: 1024 |
Author:汪凯 |
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Description: VC++图像处理及源码包（大全）包括下列内容：1.数字图像获取，处理及实践应用电子书 2.数字图像获取，处理及实践应用电子书分章节源码 3.书中提及的各种算法的综合源码。压缩包里面包括的算法代码有：分章节源码内容：内容：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；逆滤波复原、维纳滤波方法；傅立叶变换、离散余弦变换（DCT）、沃尔什变换、基于特征向量的变换、霍特林（Hotelling）变换、SVD变换、小波变换、Mallat算法；霍夫曼（Huffman）编码、算术编码、游程编码（Run Length Coding）、位平面编码、预测编码、DPCM、JPEG 2000编码；骨架检出、轮廓提取；边界跟踪、阈值分割区域生长、分裂合并、 Canny算子；图像的模式识别。各种算法的综合源码：原图、抖动，灰度变换、直方图均衡、多种滤波器、伪彩色增强，运动模糊、逆滤波，傅立叶变换、快速傅立叶变换、离散余弦变换、沃尔什变换、霍特林变换、小波变换、小波反变换，霍夫曼编码、香浓-费诺编码、算术编码、位平面编码，图像识别。(Visual C++ image processing and source code package (Daquan) includes the following contents: 1. Digital image acquisition, processing and practical application of e-book 2. Digital image acquisition, processing and practical application of e-book chapter source code 3. The comprehensive source code of various algorithms mentioned in the book. The algorithm codes included in the compression package include: Chapter Source Code: Content: Contrast Enhancement, Gray Level Transform, Histogram Renovation, Image Smoothing, Image Sharpening...) Platform: |
Size: 15010816 |
Author:jhanker |
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Search - gray-level image compression