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jpg_DCT
- 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.
JPEGcompression.rar
- 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。 具体源程序由主程序及两个子程序（DCT量化、Huffman编码）组成： ,1. First of all, through the DCT transform to remove data redundancy 2. The use of quantization table of quantization DCT coefficients 3. Of quanti
Desktop
- 经过DCT变换用 LZW进行数据压缩 再还原回来-After DCT transform data using LZW compression and then restored back
DWHT_DCT
- 对图像数据做DCT变换及DWHT变换的示例程序，在matlab7下运行正常-Done on the DCT transform of image data and transform DWHT example the procedures in the normal run matlab7
dct
- JPEG压缩算法的核心是“视觉保真”原理，利用人类视觉系统特征进行处理，以达到最大图像数据压缩效果，实际上就是去除那些人眼不易觉察的信息。图像的空间频率对人的视觉至关重要，采用离散余弦变换可将图像分解成一组波，每个波有一个不同的空间频率，这样可以去除人类眼睛觉察不到的信息，而且还可使系统只保留重要的信息。-JPEG compression algorithm is the core of " visual fidelity" principle, the use of the
dwprotected
- Matlab source code for DCT-based watermarking for grayscale images. DCT-based watermark recovering without resorting to the uncorrupted original image. Digital watermarking has been proposed as a viable solution to the need of copyright protection an
DiscreteCosineTransform
- DCT A discrete cosine transform (DCT) expresses a sequence of finitely many data points in terms of a sum of cosine functions oscillating at different frequencies. DCTs are important to numerous applications in science and engineering, from lossy com
jpegc
- 本文档实现了JPEG压缩算法，字组织比较简陋, 大体上分成 3 个部分. 压缩算法简介 1. 色彩模型 2. DCT (离散余弦变换) 3. 重排列 DCT 结果 4. 量化 5. 0 RLE 编码 6. 范式 Huffman 编码 7. DC 的编码 解码过程简述 8. 一个数据单元 Y 的解码 9. JPG 文件(Byte 级)里怎样组织图片信息 10. 关于标记 11. JPG 文件中 Haffman 表的储存
matlab
- jpeg to data matrix in r,g,b
imagecode
- face regention system using DCT and fisher algoritm shows the efficent method for face regention to identify good match between the data base images.
DCTbianhuan
- 调用noissin.dat的数据，对其做一维DCT及逆DCT，研究对DCT的结果舍去不同点数后的重建情况-Call noissin.dat data, do their one-dimensional DCT and inverse DCT, the results of research on the DCT rounding after the reconstruction of different points
DCTDWT
- DCT + DWT algorithm for data encrytion hiding
matlab_watermark
- 本文算法是将24 位真彩图的亮度分量分块 DCT ,然后利用DCT 量化系数的奇偶特性嵌入8 位灰度水印图,并通过PN 序列加密来保证水印的 安全性。算法中,将灰度图像转换为二进制数据 流,置乱后扩频调制,隐藏在宿主DCT 系数量化值 中,提取时不需要宿主信号,实现水印信号的盲提 取。-This algorithm is 24-bit true color pictures of the luminance component of block DCT, quantiza
dct
- 离散余弦变换,实现数据的压缩以及相应噪声的去除-Discrete cosine transform, data compression and noise removal of the corresponding
dct
- 对图像进行DCT正反变换，可以在matlab里面观察正变换后的数据，达到数据压缩。-DCT pros and transform the image in matlab which observed data is transformed to achieve data compression.
DCT
- 用MATLAB实现数据压缩中的DCT变换，程序里有比较详细的说明。-DCT transform data compression using MATLAB program, a more detailed explanation.
data-compress
- 关于数据压缩的DCT压缩和hoffman压缩算法，有详细的例子，运行有效，推荐下载-DCT hoffman data compressing
dct
- A discrete cosine transform (DCT) expresses a finite sequence of data points in terms of a sum of cosine functions oscillating at different frequencies. DCTs are important to numerous applications in science and engineering, lossy compression of audi
data-compression-codes
- Data compression tools such as JPEG, KL TRANSFORM, DCT ETC ALGORITHM ARE given
data-hiding-with-LCB-and-DCT
- LCB和DCT信息隐藏算法 matlab代码的简单实现，稍微整合了一下，LCB能够隐藏的数据多点，DCT要少点-LCB and DCT information hiding algorithm is simple matlab code to integrate a little bit, LCB multi-point data can be hidden, DCT to less