搜索资源列表
work.rar
- 常用图像压缩编码码matlab实现。包括:DM编码、变换编码(FFT和DCT)、算术编码、行程编码、Huffman编码、线性预测编码和一个近似的JPEG编码过程。非常适合入门用户实践。,Commonly used image compression coding matlab code to achieve. Including: DM coding, transform coding (FFT and DCT), arithmetic coding, Run-Length Coding, Hu
tuxiangbianhuan.rar
- 图像变换 将图象分块(8*8),作DCT变换,并作IDCT:DCT是一种可分离图象变换,用来图象压缩编码,IDCT用来解压缩,Image transform to image sub-block (8* 8), for the DCT transform, and IDCT: DCT is a separable transform image to image compression coding, IDCT used to extract
数字图像处理算法
- 数字图像处理:先进行傅里叶变换,然后低通滤波;最后还原。并附有余弦变换对照结果。,DIP:first FFT,then Butterworth filter,last inverse the course,also the DCT for comparition.
project2.rar
- 数字图像处理的实验 DCT IDCT变换 灰度变换 锐化等等,Digital image processing experiments DCT IDCT transform gray-scale transformation sharpening, etc.
tuxiangyasuo
- 基于DCT变换的图像压缩的基本原理及其实现步骤。采用DCT变换压缩的依据。图像压缩过程的最后步骤是编码量化了的图像。在此,我采用的是Huffman编码方法。并使用MATLAB7.0实现DCT图像压缩的仿真。-DCT based on the image compression
DCT
- 将一幅图像先进行分成8X8块,然后对每个8X8块进行DCT变化,最后将变换后的图片进行分层,重新显示-Will an image to 8 X8 into pieces, then to every 8 X8 block DCT change, finally will transform the images after the layered, displayed again
函数实现图像DCT域信息隐藏和提取的源代码
- 可用函数实现图像DCT域信息隐藏和提取的源代码,Function can be used to achieve image DCT-domain information hiding and extraction of the source code
JPEG.rar
- 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
RGB_DCT.rar
- 对RGB颜色空间的彩色图像进行DCT变换,其中可保留任意的变换系数,且可根据需求改变量化步长,RGB color space for color image DCT transform, which may retain any of transform coefficients, and can be quantified in accordance with step changes in demand
shuzishuiyindeng
- 基于LSB图像隐藏系统的设计与实现,LSB算法代码,信息隐藏攻击算法,DCT域的隐藏以及数字水印。-LSB based image hiding system design and implementation, LSB algorithm code, information hiding attack algorithm, DCT hiding and digital watermarking domain.
dct
- DCT变换和DCT反变换大全,提供多种DCT算法的实现,可用于图像和声音处理。-DCT and IDCT package, supplies lots of DCT and IDCT algorithm, very useful to image and audio processing
test_dct
- 本程序是在VC++编译环境下,用纯C语言编写的2D-DCT变换,程序中用的是一个4*4的矩阵进行的变换,可以改为对一幅图像进行。运算结果正确,在Matlab中进行了检验,dct2()指令即进行DCT变换。有一定的参考价值。-This procedure is in VC++ compiler environment, written in pure C 2D-DCT transform, the program used is a 4 x 4 matrix for the transformat
ar_dct_kda
- 在AR人脸库上进行DCT变换,使用DCT变换后的图像进行 kernel fisher discriminant analysis,其中kernel 函数可以自己选择-In the AR face database on the DCT transform, using the DCT transformed image kernel fisher discriminant analysis, which can choose the kernel function
DCT
- 实现图像的DCT高通、低通滤波器并与傅里叶变换做比较.有图可见,经DCT低通滤波后,图像变得很模糊。因为DCT是FFT取其实部,能量减少,因此图像变得很模糊,没有经FFT滤波后的效果好。 经DCT高通滤波后的图像: 经DCT高通滤波后,图像的低频部分被滤除掉,图像变黑,只有边缘的痕迹可见。-The DCT of image high-pass, low pass filter and compared with the Fourier transform.
DCT
- 基于visual c++对图像进行DCT变换的编程-Based on visual c++ Image DCT transform programming
matlab-code
- 对数字图像处理中的离散傅里叶变换(DFT),离散余弦变换(DCT)进行了详细的分析。其中DFT包括log视觉处理,中心点移动等。DCT包括分块处理,和保留较少系数,并比较结果。-Digital image processing of the discrete Fourier transform (DFT), discrete cosine transform (DCT) for a detailed analysis. DFT which include the log of visual pr
DCT
- 图像的基于8*8分块的DCT变换编码 MATLAB编程环境 -Images based on 8* 8 block of DCT transform coding MATLAB programming environment
information-hiding
- 采用MATLAB实现图像信息隐藏。将文本信息,通过DCT和LSB算法嵌入到二维图像中实现信息隐藏。-hide information into voice signal with the methods of DCT and LSB
Chapter6-9
- 第六章到第九章的代码 本书通过100多个模块实例,详细地讲解了Verilog HDL程序设计语言,全书共分13章,内容涉及VerilogHDL语言基本概念、建模、同步设计、异步设计、功能验证等,实例包括各种加法器/计数器、乘法器/除法器、编码器/译码器、状态机、SPIMaster Controller、I2C Master controller、CAN ProtocolController、Memory模块、JPEG图像压缩模块、加密模块、ATA控制器、8位RISC-CPU等及各个实例
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- 彩色数字水印的程序,实现在彩色图像中通过DCT变换来嵌入水印信息-Color digital watermarking process to achieve the color image by DCT transform to embed watermarks