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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.
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Size: 791964 |
Author: 钟祖豪 |
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Description: 这是一个图像处理的实验报告-This is an image processing experimental report
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Size: 4096 |
Author: 刘小 |
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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.
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Size: 791552 |
Author: 钟祖豪 |
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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.
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Size: 5011456 |
Author: lzy |
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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.
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Size: 1024 |
Author: 朱晓路 |
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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
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Size: 861184 |
Author: bob |
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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
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Size: 1024 |
Author: 廖和 |
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Description: 其功能是实现对图象的DCT(离散余弦变化)变化,包含原始图和变化后的结果以及C代码-its function is to achieve the right image DCT (discrete cosine change) change, containing the original map and change the outcome of the C code
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Size: 126976 |
Author: 梁剑 |
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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
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Size: 137216 |
Author: 刘铭 |
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Description: DCT编码mtalab程序，其中用到matlab的图像编码模块以及一些常用的算法程序-DCT coding procedures which used Matlab image coding module, and some commonly used algorithm!
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Size: 1024 |
Author: favinfeng |
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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
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Size: 44032 |
Author: |
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Description: 灰度图象的DCT变换，有各个具体参数的显示哦-gray image DCT, specific parameters showed oh
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Size: 3536896 |
Author: yuka |
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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.
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Size: 150528 |
Author: bmws |
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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.
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Size: 63488 |
Author: 草原 |
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Description: 针对给定的静止图像进行DCT 变换
给定不同的阈值及将数据块中不同位置的值置为0所得到的不同情况下压缩-For a given static image DCT transform a given threshold and a different data block at different positions of a value of 0 has been compressed under different circumstances
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Size: 62464 |
Author: 孟斌 |
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Description: 256色灰度图像压缩
256色灰度图像dct变换-标量量化-反标量
量化-反DCT-256-color grayscale image compression 256-color grayscale image dct transform- scalar quantization- Anti-scalar quantization- Anti-DCT
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Size: 3072 |
Author: 赵欣 |
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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: 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: 提出了一种可抗
几何攻击的二值文本图像水印算法. 该算法基于DCT,它将二值图像的DCT、图像的视觉特征向
量和加密技术有机结合起来,在提取水印时不需要原始图像,是一种实用的盲水印算法-We propose a geometric attacks against Binary Text Watermarking Algorithm. The algorithm is based on DCT, it binary image DCT, the image of the visual feature vector and encryption technology combine in the watermark without the original image is a practical blind watermarking algorithm
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Size: 1190912 |
Author: 切尔西 |
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Description: 实现颜色图像DCT水印嵌入和提取，以及彩色版本和非彩色版本图像的程序(Implementation of color image DCT transform)
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Size: 3072 |
Author: 风痕灬
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