Description: 算术编码是图像压缩的主要算法之一。 在给定符号集和符号概率的情况下，算术编码可以给出接近最优的编码结果。使用算术编码的压缩算法通常先要对输入符号的概率进行估计，然后再编码。这个估计越准，编码结果就越接近最优的结果-Arithmetic coding algorithm was a major one compressed image. In a given symbol set and symbol probability case, arithmetic coding can give near optimal coding results. Arithmetic coding compression algorithm used is usually first on the probability of input symbol estimates, and then encoding. This estimate is more accurate, the closer the results of the optimal coding results Platform: |
Size: 5120 |
Author: |
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Description: 裡面有包含圖片跟jpeg壓縮的主要程序DCT的演算法,會秀出作dct轉換的前後圖片-Contains a picture inside the main program with the jpeg compression algorithm DCT will be showed off pictures before and after conversion for dct Platform: |
Size: 311296 |
Author:傅敬柏 |
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Description: 提出的算法可以解决在嵌入式系统上显示含有文本和图像的PDF 文件的要求。该算法先将PDF 文件分解成图像和文本两部分，然
后依照原文件的显示格式将分解出来的元素合成一种新的格式文件，最终实现将PC 机上的PDF 格式文件转化为适合在嵌入式系统上正确显示的格式。该算法缩减了文件的大小，使之适应于嵌入式系统有限的硬件资源，也扩大了嵌入式系统的文件来源。-The proposed algorithm can solve embedded system with text and images displayed on the PDF documents. The algorithm first PDF file into two parts, image and text, and then display format in accordance with the original file will be decomposed by the elements to synthesize a new format, and ultimately on the PC, converted to PDF format suitable for use in embedded systems The format shown on the right. The algorithm to reduce the file size, to adapt them to embedded systems with limited hardware resources, but also to expand the files from the embedded system. Platform: |
Size: 254976 |
Author:陈小迈 |
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Description: 一系列展示图像压缩技术的源代码。包括有：使用块截断编码的图像压缩(Block Truncation)、基于高斯金字塔变换的图像压缩(Gaussian Pyramids)、基于离散余弦变换对图像压缩(Discrete Cosine Transform)、基于奇异值分解(SVD)的图像压缩(Singular Value Decomposition)。给出的代码还可以用于2D图像噪声消除。-Series show the source code for image compression technology. Include: use of block truncation coding for image compression (Block Truncation), Gaussian pyramid transform based image compression (Gaussian Pyramids), based on the discrete cosine transform image compression (Discrete Cosine Transform), based on singular value decomposition (SVD) image compression (Singular Value Decomposition). The code given 2D image can also be used for noise cancellation. Platform: |
Size: 61440 |
Author:程擎 |
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Description: matlab环境的小波压缩算法，给予dwt的心电图压缩，滤去了高频分量，具有较高的压缩比率-matlab environment wavelet compression algorithm, giving dwt ECG compression, filter the high frequency components with high compression ratio Platform: |
Size: 1024 |
Author:polochen |
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Description: ZIP压缩算法的VC实现，从中学习编程的乐趣，掌握压缩算法的实现过程-ZIP compression algorithm of the VC to achieve, learn the fun of programming, master the process of compression algorithms to achieve Platform: |
Size: 118784 |
Author:gaocheng |
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Description: 压缩感知的算法，很多资料都是不错的最新论文。-Compressed sensing algorithm, a lot of information is the latest good papers. Platform: |
Size: 4494336 |
Author:wangg |
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Description: 通过matlab实现基于小波变换的图像压缩算法研究，内容详细，通俗易懂，可供大家使用，互相学习。-Matlab based on wavelet transform image compression algorithm, detailed and easy to understand for everyone to use, learn from each other. Platform: |
Size: 103424 |
Author:辛力 |
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Description: 基本分形算法，步骤,包括分割算法，变换类型选择，编码和解码过程及c代码-basic fractal algorithm, procedure, including segment algorithm, transformation type choice, coding and decoding process, and also the prime codes Platform: |
Size: 295936 |
Author:candies |
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Description: 7-zip压缩算法源代码,很有启发，里面有几个不同的语言-7-zip compression algorithm source code, very enlightening, there are a few different languages Platform: |
Size: 289792 |
Author:junco |
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Description: 一种PCNN图像压缩算法，可用于大多数图像的压缩，准确率较高。-One kind of PCNN image compression algorithm can be used for most image compression, high accuracy. Platform: |
Size: 3243008 |
Author:王晓婧 |
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Description: 基于matlab平台，通过DCT算法来对视频进行压缩。代码包括视频分解成帧，DCT算法压缩，帧合成视频，以及综合的视频压缩M文件，可以直接仿真。有相应的图片，以及压缩前后的视频，还有原理word报告。-Based on matlab platform, through DCT algorithm to compress the video. Code includes video decomposition framing, DCT compression algorithm, frame composite video, and integrated video compression M files can be directly simulated. Corresponding images, and compressed video before and after, as well as the principle of word report. Platform: |
Size: 11201536 |
Author:魏路 |
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Description: DCT and Image Compression
In the JPEG image compression algorithm, the input image is divided into
8-by-8 or 16-by-16 blocks, and the two-dimensional DCT is computed for each
block. The DCT coefficients are then quantized, coded, and transmitted. The
JPEG receiver (or JPEG file reader) decodes the quantized DCT coefficients,
computes the inverse two-dimensional DCT of each block, and then puts the
blocks back together into a single image. For typical images, many of the
DCT coefficients have values close to zero these coefficients can be discarded
without seriously affecting the quality of the reconstructed image.
The example code below computes the two-dimensional DCT of 8-by-8 blocks
in the input image, discards (sets to zero) all but 10 of the 64 DCT coefficients
in each block, and then reconstructs the image using the two-dimensional
inverse DCT of each block. The transform matrix computation method is used.- DCT and Image Compression
In the JPEG image compression algorithm, the input image is divided into
8-by-8 or 16-by-16 blocks, and the two-dimensional DCT is computed for each
block. The DCT coefficients are then quantized, coded, and transmitted. The
JPEG receiver (or JPEG file reader) decodes the quantized DCT coefficients,
computes the inverse two-dimensional DCT of each block, and then puts the
blocks back together into a single image. For typical images, many of the
DCT coefficients have values close to zero these coefficients can be discarded
without seriously affecting the quality of the reconstructed image.
The example code below computes the two-dimensional DCT of 8-by-8 blocks
in the input image, discards (sets to zero) all but 10 of the 64 DCT coefficients
in each block, and then reconstructs the image using the two-dimensional
inverse DCT of each block. The transform matrix computation method is used. Platform: |
Size: 1024 |
Author:Eldhose |
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Search - compression algorithm