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Description: 关于 JEPG的DCT代码，比较简单，但还是比较好的，大家学习-DCT on the JPEG code, relatively simple, but is still relatively good, we learn
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Size: 23552 |
Author: 春春 |
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Description: 这是一个基于DCT的jpeg图像压缩编码算法的MATLAB实现的程序,对做jpeg压缩的朋友会很有帮助-this is matlab jpeg compression based on dct,it is helpful for who embark on jpeg compression.
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Size: 40960 |
Author: 杨晖 |
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Description: 这是使用小波变换,jpeg以及DCT变换对图像进行的压缩
-This is the use of wavelet transform, and the DCT jpeg images of the compression
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Size: 563200 |
Author: yangfeng |
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Description: DCT变换是数字图像处理中重要的变换，很多重要的图像算法、图像应用都是基于DCT变换的，如JPEG图像编码方式。对于大尺寸的二维数值矩阵，倘若采用普通的DCT变换来进行，其所花费的时间将是让人难以忍受甚至无法达到实用。而要克服这一难点，DCT变换的快速算法无非是非常吸引人的-DCT digital image processing is an important transformation, many important images algorithm, imaging applications are based on the DCT, such as JPEG image encoding. For large-size two-dimensional numerical matrix, if only the ordinary for DCT, they spent the time people will be unable to reach intolerable even practical. To overcome this difficulty, DCT fast algorithm is nothing more than a very attractive
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Size: 10240 |
Author: javenliu |
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Description: 介绍了JPEG图像压缩算法,并在MATLAB 数学分析工具环境下从实验角度出发,
较为直观地探讨了DCT 在JPEG图像压缩中的应用。仿真实验表明,用MATLAB 来实现离散余弦
变换的图像压缩,具有方法简单、速度快、误差小的优点,大大提高了图像压缩的效率和精度。
李秀敏1 , 万里青1 , 周拥军2
(1. 河南科技大学电子信息工程学院,河南洛阳 471003 2. 中航一集团洛阳电光设备研究所,河南洛阳 471009)-introduced the JPEG image compression algorithm, MATLAB and mathematical analysis tool environment from experimental perspective, more directly on the DCT in JPEG image compression applications. Simulation results show that the use MATLAB to achieve discrete cosine transform image compression method is simple, fast, the advantages of a small error, which has greatly enhanced the efficiency of image compression and accuracy. LI Xiu-1, Green 1 Wanli, Zhou Yongjun 2 (1. Henan University of Science and Technology of Electronics and Information Engineering College, Luoyang, Henan 471003 2. A350 Luoyang Electro-Optic Equipment Institute, Luoyang, Henan 471009)
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Size: 108544 |
Author: adnsid |
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Description: 实现基本JPEG的压缩和编码
％ 1． 首先通过DCT变换去除数据冗余；
％ 2． 使用量化表对DCT系数进行量化；
％ 3． 对量化后的系数进行Huffman编码。
-achieve basic JPEG compression and coding% 1. First through DCT remove data redundancy; % 2. Using quantitative table right DCT coefficient quantization; 3. Right quantized coefficients of Huffman coding.
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Size: 1024 |
Author: 孙雨萌 |
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Description: 关于利用离散余弦变换DCT的jpeg压缩的matlab源程序，简单实用，也有注释，很好读。-on the use of discrete cosine transform DCT jpeg compression Matlab source, simple and practical, the Notes have a good time.
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Size: 23552 |
Author: 张华 |
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Description: JPEG压缩核心变换DCT实现源码，用matlab7.0实现-JPEG compression core transform DCT achieve source used to achieve matlab7.0
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Size: 1024 |
Author: song |
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Description: 图片压缩代码，适用于DCT JPEG图片压缩。-Image compression code, applicable to DCT JPEG image compression.
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Size: 1024 |
Author: liyigang |
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Description: 基于DCT的JPEG图象编码,用MATLAB实现的-DCT-based JPEG image coding, using MATLAB realization
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Size: 122880 |
Author: 胡卖国 |
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Description: 这是一个静态JPEG图像编码及解码的程序。程序同时实现了经典的和Chen陈氏数据流图的DCT离散余弦变换。预先定义JPEG图像质量级别矩阵和zigzag排序-This is a static JPEG image coding and decoding procedures. Procedures at the same time realize a classic and Chen Chen
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Size: 95232 |
Author: 林明 |
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Description: JPEG中DCT 变换在 matlab中的实现 相当简便-JPEG in the DCT transform in matlab in the realization of a very simple
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Size: 1024 |
Author: 蔡同学 |
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Description: 图像JPEG压缩算法，由8*8DCT变换，调用量化表进行量化，最后由Huffman编码完成算法-JPEG image compression algorithm, the 8* 8DCT transform, quantization table calls to quantify, and finally completed by the Huffman coding algorithm
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Size: 168960 |
Author: 宇翔 |
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Description: 利用dct实现JPEG在Matlab环境下图像压缩程序-Matlab environment in JPEG image compression procedure
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Size: 3072 |
Author: 石头 |
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Description: JPEG DCT based baseline method which divides the image into 8x8 blocks and quantize anthen entropy coded.
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Size: 3072 |
Author: anitha |
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Description: 对JPEG的压缩标准进行了仿真，主要过程DCT压缩，根据JPEG的量化矩阵对DCT结果进行量化，对量化结果进行Huffman编码。同时也实现了解压缩过程，即执行上述过程的逆过程。-JPEG compression standard of the simulation, the main process of DCT compression, according to the JPEG quantization matrix to quantify the results of the DCT, to quantify the results of Huffman coding. At the same time compression process to achieve understanding, that is, the inverse process of the implementation of the process.
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Size: 5120 |
Author: Justin |
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Description: DCT-based Data hiding: dataHide.m Hide the logo image into the original
dataExtract.m Extract the logo image from the original findData.m Verify the robustness of the data hiding method 。and use jpeg compress
-DCT-based Data hiding: dataHide.m Hide the logo image into the original dataExtract.m Extract the logo image from the original findData.m Verify the robustness of the data hiding method. and use jpeg compress
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Size: 5120 |
Author: 潘 |
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Description: jpeg to data matrix in r,g,b
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Size: 2822144 |
Author: suhu |
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Description: 给予matlab的JPEG压缩程序，包含原始压缩图片，程序对灰度bmp图片进行JEPG编码，压缩成以0101形式的编码。JPEG编码先把图象色彩RBG变成亮度Y和色度Cr、Cb，它利用人的视觉对色度不敏感的特点，减少一部分色度数据，以达到压缩。 JPEG采取多种编码方式，包含有行程编码(Run Length Coding)和哈夫曼(Huffman)编码，有很高的压缩比。在编码前，先对数据进行分块，离散余弦变换（DCT）及量化，保留能量大的低频信号，丢弃高频信号以达到压缩。-Given to the JPEG compression matlab program, contains the original compressed image, the program of the grayscale bmp picture JEPG encoded, compressed into a 0101 form of encoding. RBG color coded JPEG image into a first luminance Y and chrominance Cr, Cb, which uses the human visual characteristics is not sensitive to the color, reduce the number of color data to achieve compression. Take a variety of JPEG encoding, includes length coding (Run Length Coding) and Huffman (Huffman) coding, a high compression ratio. In the code before the data block, discrete cosine transform (DCT) and quantization, to retain a large low-frequency signal energy, discarding high-frequency signals in order to achieve compression.
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Size: 175104 |
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Description: a program that encod and decode an image with jpeg stadard, using the dct transform
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Size: 54272 |
Author: bilabila
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