搜索资源列表
DCT--watermark
- 基于离散余弦变换的一段音频水印嵌入程序，对毕业设计有一定的帮助-A discrete cosine transform-based audio watermark embedding program, designed for graduates of some help
imagecompression
- 有损图像压缩的matlab程序实现，通过dct变换，霍夫曼编码，译码，比较压缩后图像与原图。-lossy image compression
DCT-for-image-compression-
- 利用DCT进行图像压缩（首先将图像分割成8×8的图像，对每个子图像进行DCT，这样每个子图像有64个系数，舍去50％小的变换系数，进行2：1的压缩。）-Using DCT for image compression (first image into 8 × 8 image, for each sub-image DCT, so that each sub-image by a factor of 64, rounding 50 of the small transform coefficie
DCT
- 基于余弦变换的压缩原理实现的，具有很好的使用价值-Cosine transform based on the principle of compression achieved, with good use value
a1
- 首先将YUV格式的视频转换为MAtlab适用的格式，通过主要采用DCT变换的方式，实现视频水印的嵌入。-First, the YUV format video conversion MAtlab for the format, mainly DCT transform by way of video watermark embedding.
KL
- 用MATLAB仿真KL变换，并与DCT变换进行了比较-KL transform using MATLAB simulation and a comparison with the DCT transform
dsp_system
- 实现一个数字信号处理的仿真系统 。具有界面并实现以下功能：能产生（得到）并选择各种数字信号（sin、方波、三角波、语音、噪声及其叠加）；具有DFT和DCT变换功能，对各种信号进行变换；设计滤波器实现低通、高通、带通滤波，得到输出信号的频域特性和时间序列。-the realization of a digital signal processing simulation system. Requires interface and achieve the following functions:
F5steganographic-1.0
- 针对F5隐写的检测，包括共生矩阵，不连续性的特征提取，DCT变换，灰度值提取，运用支持向量机SVM -For F5 steganography detection, including the co-occurrence matrix, feature extraction discontinuity, DCT transform, gray value extraction, using support vector machine SVM
m
- mylsb.m是个非常完整的LSB密写源码并且密写和提取都在里面，图片我没上传，你只需要添加一个图片文件就可以了，记住图片必须是灰度图片，如果是RGB，我转换的代码也在里面很有意思哦。weipingmian.m是个提取图像位平面的程序，图片也是需要你自己加载，最后一个就是8*8块的图像DCT变换。-mylsb.m is a very complete source of LSB Steganography Steganography and extraction, and are on the
dct
- dct,dft,dht三种图像压缩变换之间的比较-DCT, dft, the dht three kinds of image compression transformation
mpeg
- MPEG编码以及DCT变换的理论基础，应用mpeg方法对视频图像的压缩处理-MPEG encoding and DCT transform theoretical basis, application mpeg video image compression
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.
jpeg
- JPEG的压缩编码及其matlab实现，包含了DCT变换，量化，AChuffman编码，DChuffman编码。-Of JPEG compression matlab to achieve, including the DCT, quantization, AChuffman coding, DChuffman coding.
JPEG-Encoder-Decoder
- JPEG图像压缩,包括了DCT变换，Z扫描，量化和Huffman编码-JPEGimagine compression
1
- 文档中有3个程序。h.264灰度处理程序，DCT变换程序，DCT系数量化程序。-There are three programs in the document. The h.264 gray handler, and DCT transform process, the DCT coefficient quantization process.
exp1
- 包含几个小程序，包括基音周期提取，生物医学信号压缩：DCT变换，K-L变换等-Contains several procedures, including the pitch period extraction, biomedical signal compression: DCT transform, KL transform
jpegyasuo
- 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。 -Achieve JPEG compression and coding of the DCT (1) First remove the data redundancy (2) Use the quantization tables for DCT coefficients to quantify (3) Huffman c
soundDCT
- 读入语音信号并对其进行dct变换进行压缩变换的matlab程序-Reading the speech signal compression transform Matlab procedures and dct transform
11
- matlab代码，实现DCT变换 -matlab code, DCT transform matlab code, DCT transform
tuxiangyasuo
- （1）试利用函数dct2，对该图像进行压缩。压缩时可尝试对DCT 变换后的系数采用不同取舍方法，比较其压缩性能。（函数dct2在matlab本身是有的，可以help dct2看看） （2）结合课本例8.7.2 的量化方法，对每一个经DCT变换后的8×8 矩阵量化（Huffman编码部分可省略），从而实现图像压缩。在一定压缩比的情况下，和⑴给出的图像质量相比较。 （3）用所给的子子程序fast_LOT.m 实现对该图像的变换与压缩，并和（1）得出的图像质量相比较-(1) Test usin