Location:
Search - dct image
Search list
Description: 图象处理DCT算法-DCT image processing algorithm
Platform: |
Size: 5069824 |
Author: 何文辉 |
Hits:
Description: 这是一个图像处理的实验报告-This is an image processing experimental report
Platform: |
Size: 4096 |
Author: 刘小 |
Hits:
Description: 实行针对图像的DCT以及IDCT变换的源程序。-instituting image DCT and IDCT transformation of the source.
Platform: |
Size: 791552 |
Author: 钟祖豪 |
Hits:
Description: 本文结合DCT变换的特性，利用分形的Peano一hilbert扫描曲线，对基于DCT变换的图像编码方法进行了研究，并提出了改进方法。主要工作分为两个部分: 一是在分块DCT基础上的改进。对分块后生成的各图像块矩阵，不直接作二维DCT变换，而是先进行扫描，使之重排成一维向量，再进行一维DCT变换，这样可以减少运算量。 其次是对层次余弦变换编码部分的改进。使用层次DCT变换与零树编码相结合的方法，并在扫描编码过程中，按Peano一hilbert扫描顺序进行编码。这样不仅可以减少“块效应”，而且可以加快编码速度。-this paper the characteristics of DCT, using fractal Peano a Hilbert scanning curve, the DCT-based image coding method for the study and improvement of methods. The work is divided into two main parts : First, the DCT block on the basis of improvements. Right after block production of the image block matrix, not for direct two-dimensional DCT, but first scan, so they line up in a heavy-dimensional vector and then a peacekeeping DCT, thus reducing the amount of computation. Secondly, the level of cosine transform coding some of the improvements. The use level of DCT and zero tree coding combination of methods, coding and scanning process, according to a Hilbert Peano code scanning sequence. This will not only reduce the "blocking effect" but we can speed up the coding speed.
Platform: |
Size: 5011456 |
Author: lzy |
Hits:
Description: 对原始灰度图像 Lena_gray.bmp进行图像压缩实验
1．对此图进行 8×8 DCT 变换后，分别只保留 DC系数，以及保留前 4、8、16 个变换系数(DC＋AC) ，然后再分别进行 IDCT 变换，比较结果。
2．可以使用 Matlab - Image Processing Toolbox 中的函数实现。
-gray image of the original image compression Lena_gray.bmp an experiment. This diagram 8 8 DCT, the only difference reservations DC coefficient, and the preservation of the former 4, 8 or 16 DCT coefficients (DC+ AC), and then separately IDCT transformation, the results of the comparison. 2. Using Matlab-Image Processing Toolbox to achieve the function.
Platform: |
Size: 1024 |
Author: 朱晓路 |
Hits:
Description: 基于MATLAB的DCT域数字图像水印技术.PDF
利用matlab实现-MATLAB-based DCT digital image watermarking technology. PDF achieved using Matlab
Platform: |
Size: 861184 |
Author: bob |
Hits:
Description: 离散余弦变换(D iscrete Cosine Transform )简称D CT,是一种实数域变换,其变换核为实数的余弦函数,除了具有一般的正交变换性质外,它的变换阵的基向量能很好地描述图像信号的相关特征,所以在图像信号的变换中,D CT变换被认为是一种准最佳变换。
-discrete cosine transform (D iscrete Cosine Transform) referred D CT it is a real domain transform, transform its nuclear real number of cosine function, in addition to the general nature of the orthogonal transformation, its transformation matrix-vector can be a good image to describe the relevant characteristics of the signal, the image signal transformation, D CT transformation has been seen as a potential best transformation.
Platform: |
Size: 291840 |
Author: 刘东 |
Hits:
Description: 上传的是C编写的DCT算法，在图象处理方面常用到，希望对你有用-upload is prepared by the C DCT algorithm, the image processing used to the hope that useful to you
Platform: |
Size: 1024 |
Author: 廖和 |
Hits:
Description: 数字图像处理实验
根据原图像的直方图，发现背景和目标的分割值大约在130左右，并将灰度图像转为二值图像，分割效果比较理想。
图像处理实验（六）图像压缩与编码
实验目的： 学习JPEG压缩编码
实验内容：
一．实现基本JPEG的压缩和编码分三个步骤：
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。-digital image processing experiments based on the original image histogram, found background and objectives of the divided about the value of around 130 and two gray-scale image to image, Segmentation more satisfactory results. Image processing experiments (6) Image Compression and Coding of the experiment : Learning JPEG compression coding experiment : one. Basically JPEG compression and coding in three steps : 1. First through DCT remove data redundancy; 2. Using quantitative table right DCT coefficient quantization; 3. Right quantized coefficients of Huffman coding.
Platform: |
Size: 4096 |
Author: qq |
Hits:
Description: DCT离散余弦快速变换，可用于图象处理及音频信号处理-fast DCT discrete cosine transform, can be used for image processing and audio signal processing
Platform: |
Size: 137216 |
Author: 刘铭 |
Hits:
Description: matlab关于DCT的图像处理程序
供大家交流-Matlab on DCT image processing procedures for the exchange of
Platform: |
Size: 2048 |
Author: 流风回雪 |
Hits:
Description: VC++6.0对图像进行离散余弦变换处理的源代码-VC 6.0, the image discrete cosine transform source code
Platform: |
Size: 44032 |
Author: |
Hits:
Description: 离散傅立叶变换，在数字图像的频域处理中经常使用的变换，源代码为VC6开发环境。-Discrete Fourier Transform in the frequency domain of digital image processing frequently used transform, the source code for VC6 development environment.
Platform: |
Size: 150528 |
Author: bmws |
Hits:
Description: 简单的DCT的MATLAB图象压缩实验，适用于初学者-Simple DCT image compression experiment of MATLAB for beginners
Platform: |
Size: 1024 |
Author: cat |
Hits:
Description: 使用DCT算法实现8X8的BMP图像压缩的一个源代码，希望对大家有用~-8x8 algorithm using DCT image compression of BMP, a source code, in the hope that useful to everyone ~
Platform: |
Size: 3072 |
Author: viconia |
Hits:
Description: 该程序用于对灰度图像进行dct变换的，然后可以在这基础进行量化，编码等。-The procedure used for gray-scale image DCT transform, and then can be quantified on this basis, coding and so on.
Platform: |
Size: 63488 |
Author: 草原 |
Hits:
Description: Project 2D DCT core - specifications and codes-Project 2D DCT core- specifications and codes
Platform: |
Size: 494592 |
Author: student |
Hits:
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
Platform: |
Size: 252928 |
Author: han |
Hits:
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
Platform: |
Size: 311296 |
Author: 傅敬柏 |
Hits:
Description: 基于DCT的图像压缩，可以自己改变量化强度，绝对可用！-DCT-image compression
Platform: |
Size: 179200 |
Author: jxz |
Hits:
« 12
3
4
5
6
7
8
9
10
...
50
»