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 Platform: |
Size: 563200 |
Author:yangfeng |
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Description: 一个简单对图象进行JPEG图像压缩算法。希望对大家有所帮助-A simple image to JPEG image compression algorithm. I hope all of you to help Platform: |
Size: 1024 |
Author:yangmengling |
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Description: jpeg压缩的matlab程序，包括分块，量化，霍夫曼编码，其中量化和霍夫曼编码用查表实现，提高速度。-jpeg compression matlab procedures, including block, quantization, Huffman coding, in which quantization and Huffman coding using look-up table to achieve, improve the speed. Platform: |
Size: 1118208 |
Author:ronghy |
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Description: 实现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。
-The realization of JPEG compression and coding (1) First of all, through the DCT transform to remove data redundancy (2) the use of quantization table of quantization DCT coefficients (3) of the coefficients after quantization Huffman coding. Platform: |
Size: 2048 |
Author:李雅 |
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Description: 关于各类图象的攻击,如果滤波,噪音,锐化,JPEG压缩-Attacks on all types of images, if filtering, noise, sharpening, JPEG compression, etc. Platform: |
Size: 1024 |
Author:小户 |
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Description: 利用matlab实现图像的jpeg压缩的源代码，经过测试可以使用-Matlab image using the jpeg compression of the source code can be tested using Platform: |
Size: 86016 |
Author:邓俊 |
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Description: this a source code for the jpeg compression technique which will help you completing the work of the watermarking also.-this is a source code for the jpeg compression technique which will help you completing the work of the watermarking also. Platform: |
Size: 74752 |
Author:Ashish |
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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: Implementation of JPEG compression algorithm with JFIF header being appended.This project involves writting code for following steps : Chroma subsampling,partitioning ,level shifting,DCT,quantization,zigzag scanning(involves DC differential coding & AC huffman coding) & adding jfif header following the rules specified in itu-t.81. Platform: |
Size: 966656 |
Author:dwn |
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