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Description: DCT的FPGA实现,用verilog语言把DCT的快速算法即LOEFFLER算法表示出来。-DCT-FPGA, with the verilog language to the fast DCT algorithm, which is LOEFFLER algorithm that out.
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Size: 105472 |
Author: 蓝冰 |
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Description: 数字水印系统的实现——基于DCT的鲁棒水印。图像中数字水印的嵌入,分块DCT反变换-Image digital DCT
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Size: 1024 |
Author: 陈文 |
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Description: bmp DCT 压缩
对原图像进行DCT变换,数据压缩,丢弃右下角高频数据,进行DCT反变换,得到压缩后的图像-bmp DCT compression of the original image DCT transform, data compression, discarding the lower right corner frequency data, DCT inverse transform, the images are compressed
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Size: 156672 |
Author: zjj |
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Description: DCT域数字水印嵌入算法MATLAB实现-DCT domain watermarking algorithm MATLAB Implementation
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Size: 99328 |
Author: bai |
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Description: 在一个图像块中调整两个(或多个) DCT系数的相对大小。将描述一个使用数字图像作为载体的系统。在编码处理中,发送者将载体图像分成8×8的像素块,每一块只精确地编码一个秘密信息位。嵌入过程开始时,首先伪随机地选择一个图像块bi,用它对第i个消息比特进行编码。令Bi=D{bi}为DCT变换后的图像块。
在通信开始前,发送者和接收者必须对嵌入过程中使用的两个DCT系数的位置达成一致,让我们用(u1,v1)和(u2,v2)来表示这两个索引。这两个系数应该相应于余弦变换的中频,确保信息保存在信号的重要部位(从而使嵌入信息不容易因JPEG压缩而完全丢失
-abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwx
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Size: 1526784 |
Author: ljh |
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Description: 好东东哦,希望大家来下载,是 我们本科毕业设计论文成果,基于dct域的数字水印技术
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Size: 4009984 |
Author: Lily |
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Description: 用matlab对一张图片进行DFT变换,DCT变换,比较保留20个DCT变换系数重构的图象与原始图像的差别.-Using matlab on a picture to DFT transform, DCT transform, compared to 20 DCT transform coefficients to retain the image reconstruction of the difference between the original image.
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Size: 455680 |
Author: tosh |
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Description: 利用matlab实现基于DCT变换的变焦距图像融合-Using matlab to achieve DCT-based image fusion Zoom
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Size: 252928 |
Author: han |
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Description: 这是一个基于DCT的数字水印技术的研究,有详细的程序和代码-DCT watermarking
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Size: 896000 |
Author: 吴海龙 |
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Description: 读入一幅256*256图像,将它分成8*8pixel的若干块,对每块做DCT变换,保留Z型顺序的若干变换系数,进行IDCT重构图像,计算重构图像的信噪比-Reading a 256* 256 image, it will be divided into several blocks of 8*8 pixel, keep each optimal Z transformation of sequence number, IDCT transform coefficient calculation reconstruction image reconstruction images,and the signal-to-noise ratio
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Size: 3072 |
Author: jiangxin |
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Description: 基于Matlab GUI的图像的DCT,自由调节压缩率,计算峰值信噪比,并图形化对比还原图像-Matlab GUI for image-based DCT, freely adjust compression rates, the peak signal to noise ratio, and reduction of image contrast graphic
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Size: 204800 |
Author: 桂树 |
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Description: 用matlab实现的灰度图像DCT变换的源程序。-Matlab implementation of the gray image with DCT transform of the source.
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Size: 48128 |
Author: yang411 |
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Description: 基于DCT域数字图像水印的MATLAB实现-DCT domain based on MATLAB implementation of digital image watermarking
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Size: 78848 |
Author: kingkong_code |
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Description: all ok...4 Dec 2009 ... In this method the 2-Dimensional DCT is obtained by taking two ... column-wise 1D DCT is ascertained which gives the 2D DCT of the data. ... The design is done in Verilog HDL and the simulation is done in Modelsim 6.3b.
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Size: 1024 |
Author: haziq36 |
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Description: 图像的DCT变换,颜色空间的变换,结合OPENCV对图像进行二维空间的肤色提取-The image DCT, color space conversion, combined with OPENCV two-dimensional space of the color image extracted
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Size: 1515520 |
Author: zouguoqi |
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Description: 实现了彩色图像上的DCT变换和DCT反变换-Color image on the realization of the DCT transform and inverse transform DCT
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Size: 3758080 |
Author: 宋亚斐 |
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Description: 二维离散余弦变换 c# 实现图像压缩和特征提取
-Discrete Cosine Transform for Feature Extraction
Decription: Implementation of 2D discrete cosine transform in c#
Download source: http://www.codeproject.com/KB/GDI/2D-DCT.aspx
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Size: 29696 |
Author: ben |
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Description: DCT的数字水印的源代码,实现效果不错,大家可以参考参考-the open code about digital watermark of DCT
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Size: 1024 |
Author: wangmin |
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Description: 裡面有包含圖片跟jpeg壓縮的主要程序DCT的演算法,會秀出作dct轉換的前後圖片-Contains a picture inside the main program with the jpeg compression algorithm DCT will be showed off pictures before and after conversion for dct
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Size: 311296 |
Author: 傅敬柏 |
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Description: vc实现的dct变换 源码及程序-vc source code to achieve transformation and procedures dct
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Size: 403456 |
Author: ikan |
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