Search - DCT compression in matlab

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[Compress-Decompress algrithms] Scalable_MPEG_compression DL : 0: 本程序的目的是通过变化DCT系数以及寻找可以应用的DCT系数的最小值来进行可扩展的MPEG压缩，并且能都达到一个可以接收的效果。-the purpose of this procedure is adopted, as well as changes in DCT coefficients can be used to find the minimum value of the DCT coefficients to Progressive firms will be able to expand the MPEG compression, and can achieve an acceptable result.
Date : 2025-12-21 Size : 83kb User : 麦田
[Compress-Decompress algrithms] hu DL : 0: 实现基本JPEG的压缩和编码分三个步骤: 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。-Realize the basic JPEG compression and encoding is divided into three steps: 1. First of all, through the DCT transform to remove data redundancy 2. The use of quantization table of quantization DCT coefficients 3. Quantization coefficients after Huffman coding.
Date : 2025-12-21 Size : 2kb User : 后果
[Compress-Decompress algrithms] matlabcompress DL : 0: 使用二维离散余弦变换(DCT)进行图象压缩。原始图象被转换成为8*8大小的块进行压缩和重构。 Cnum:为压缩时保留的系数的个数 MSM:均方误差压缩应该做到在最合理的近似原图象的情况下使用最少的系数。函数：dctmtx:返回一个n*n阶DCT变换 blkproc:对图象进行不同的块处理。 im2col:重排图象块为矩阵列。注意：只适用于灰度图象。-The use of two-dimensional discrete cosine transform (DCT) for image compression. Original image is converted to become the size of 8* 8 block compression and reconstruction. Cnum: reservations for the compression factor of the number of MSM: mean square error compression should be done in the most reasonable approximation of the original image using the least coefficient. Function: dctmtx: returns an n* n-order DCT transform blkproc: image processing of different blocks. im2col: rearrangement of the matrix block out images. Note: only applicable to grayscale images.
Date : 2025-12-21 Size : 3kb User : hff
[Compress-Decompress algrithms] DWTMATLAB DL : 0: oJPEG2000中DWT的MATLAB实现n the use of discrete cosine transform DCT jpeg compression Matlab source, simple and practical, the Notes have a good time-DWT of MATLAB in oJPEG2000 realize n the use of discrete cosine transform DCT jpeg compression Matlab source, simple and practical, the Notes have a good time
Date : 2025-12-21 Size : 349kb User : 小户
[Compress-Decompress algrithms] JPEG DL : 0: 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.
Date : 2025-12-21 Size : 2kb User : 李雅
[Compress-Decompress algrithms] Huffman DL : 0: MATLAB编写的huffman编解码程序，程序中计算了压缩比。-MATLAB prepared huffman codec procedures, procedures to calculate the compression ratio.
Date : 2025-12-21 Size : 4kb User : 胡婕
[Compress-Decompress algrithms] JPEG DL : 0: 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
Date : 2025-12-21 Size : 165kb User : 宇翔
[Compress-Decompress algrithms] JPEGcompression DL : 0: 本程序实现了一个基本的灰度图像的JPEG压缩过程。其中的函数可实现DCT变换。-It shows what a jpeg compression is all about.
Date : 2025-12-21 Size : 5kb User : 张军
[Compress-Decompress algrithms] itu-t81[1] DL : 0: 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.
Date : 2025-12-21 Size : 944kb User : dwn