搜索资源列表
基于DCT变换的图象分块数字水印算法
- 1889146172.rar
Image-compression-coding-design
- 本实验为设计性实验,其目的是理解有损压缩的概念,特别是通过K-L变换或DCT变换,掌握压缩编码的基本原理、算法,并通过编程给予实现,对原始图像数据和解压后的图像数据进行失真估计,了解压缩性能及其重建效果的影响、作用,给出适当的理论分析。-Image compression coding program design
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
Color-Image-JPEG-Compression
- 彩色图像的压缩与解压的程序,网上关于图像压缩的程序基本上是黑白图像的压缩,我参考别人黑白图像压缩的源码改写出了彩色图像的压缩与解压的程序,里面包括色域的转换、DCT变换等-Compression of color images online image compression and decompression program, the program is basically a black and white image compression, my reference to the ot
piccompress
- 数字图像处理中,DCT变换,Z字形扫描,具有较好的效果,代码易懂-Digital image processing, DCT transformation, Z-shaped scanning, with good results, code understandable
DCTmark
- 基于DCT变换的信息隐藏(数字水印)嵌入算法的设计-DCT-based information hiding (digital watermark) embedded algorithm design
INT_DCT
- Verilog HDL语言实现的整数DCT变换模块。其中包括一维和两维的DCT变换模块各一个。该模块都通过硬件仿真以及FPGA实现后的测试,均满足预期的DCT变换功能。-Integer DCT transfer module with Verilog HDL format. The package includes one 1-D and one 2-D DCT transfer module, which all pass simulation and FPGA evaluation.
Image-Compression
- 图像压缩实验,实现基本JPEG的压缩和编码的三个步骤,DCT变换去除数据冗余,DCT系数进行量化,对量化后的系数进行Huffman编码-Image compression experiments, the three steps of the basic JPEG compression and encoding, DCT transform to remove data redundancy, and the DCT coefficient quantization, Huffman codi
DCT
- 通过MATLAB,基于图像变换域的信息隐藏源码-MATLAB, based on the information of the image transform domain hidden source
DCT
- 进行一维,二维,三维离散余弦变换,计算变换所需时间。-One-dimensional, two-dimensional, three-dimensional DCT transform
DCTJPEG
- blkproc.m,DCHuffmanEncoding.m,ACHuffmanEncoding.m,zigzag.m,PSNR.m, 对灰度图像进行DCT变换,量化,ZigZag扫描,Huffman编解码,反量化,反DCT变换而重建图像。 其中,blkproc.m为分块DCT变换函数; DCHuffmanEncoding.m,ACHuffmanEncoding.m分别为DC和AC变换系数的Huffman码表函数; zigzag.m为ZigZag扫描函数;PSNR.m为求图
CS-OMP
- 实现图像的分块压缩感知重建,DCT变换,OMP重构算法-Image block compressed sensing reconstruction, DCT transform OMP reconstruction algorithm
CS
- CS的一些重构算法包括OMP,somp,romp,SAMP,CoSaMp,GPSR等等其中还包括了小波变换,dct变换-compressive sensing
dct-dft-wmaaking
- 数字水印嵌入和提取算法 包含时空域和变换域的算法的matlab实现-Airspace and transform domain algorithm matlab achieve the digital watermark embedding and extraction algorithm contains
DCT-FT
- DTC变化,傅里叶变换,基于DCT的压缩变换-DTC changes, Fourier transform, DCT-based compression transform
jpeg-Cp2Bp2B
- 详细 的基于DCT变换和霍夫曼的 JPEG压缩-With text to explain in detail the JPEG decoding C++ write
11111
- 离散余弦变换,DCT变换,测试过了,可以用-Discrete Cosine Transform, DCT transform, tested, and can be used
imageDCTtranslation
- 图像的DCT变换,使用分块的方法,对图像进行快速变换-DCT transform image,Using a block method, the rapid transformation of the image
DCT-change
- 1.实现对lena.bmp灰度图像的快速傅立叶变换,并求其变换后的系数(幅度)分布; 2.实现对lena.bmp图像做离散余弦变换,选择适当的DCT系数阈值对其进行DCT反变换 ;-1 to achieve the fast Fourier transform on lena.bmp grayscale image, and to find the transformed coefficients (amplitude) distribution 2. To achieve lena.bm
watermark
- 对图像进行dct变换,然后将信息嵌入(4,4)系数上,并对其进行提取-Dct transform on the image information embedding, then the coefficient of the (4,4), and its extraction