Description: 这是一个非常有用的DCT变换的原代码，用c语言编写，希望对大家有帮助。-This is a very useful DCT's original code using the c language, and I hope to be helpful. Platform: |
Size: 134300 |
Author:何忠 |
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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. Platform: |
Size: 5011456 |
Author:lzy |
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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 Platform: |
Size: 137216 |
Author:刘铭 |
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Description: 这是一个非常有用的DCT变换的原代码，用c语言编写，希望对大家有帮助。-This is a very useful DCT's original code using the c language, and I hope to be helpful. Platform: |
Size: 134144 |
Author:何忠 |
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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. Platform: |
Size: 150528 |
Author:bmws |
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Description: 这是一篇详细介绍DCT变换的文章，从基本DCT变换到快速DCT变换，并给出了原码。-This is a detailed article, DCT transform, from basic DCT transform to fast DCT transform, and gives the original code. Platform: |
Size: 80896 |
Author:Angus_007 |
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Description: DCT变换的源代码，支持一维二维DCT变换及反变换-DCT transform of the source code, to support the one-dimensional two-dimensional DCT transform and inverse transform Platform: |
Size: 2048 |
Author:brenton |
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Description: 本人根据公式用VC++做出的DCT变换源码，解说清楚。转换矩阵8*8，计算结果与MATLAB计算结果比较，两者几乎一样(相差仅 0.001)，估计是计算误差，经过我的实践证明并不影响使用。-According to the formula I use VC++ source code to the DCT transform, to clarify. Conversion matrix 8* 8, the calculation results compared with the MATLAB calculation results, the two are almost identical (a difference of only 0.001), it is estimated that the calculation error, after I prove that the practice does not affect use. Platform: |
Size: 1024 |
Author:公孙小龙 |
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Description: 基于离散小波余弦变换DCT的数字水印算法，实现了水印的嵌入提取等过程。毕业设计源代码-Discrete Cosine Transform Based on Wavelet Digital Watermarking Algorithm in DCT, the watermark embedded in the realization of the process of extraction. Graduation Project source code Platform: |
Size: 218112 |
Author:xiaobao89 |
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Description: H264中的整数DCT变换编码及量化代码,并附有原文的DCT编码、量化的说明文档。本源码从X264及JM中抽取后整理得来，并用原文档中的示例数据进行了测试，与原文档结果完全一样，是学习H.264不可多得的参考资源.
-H264 in the integer DCT transform coding and quantization code, together with the original DCT coding, quantitative description of the document. The source from the X264 and JM Finishing extract obtained and used the original document in the test sample data with the results of exactly the same as the original document, is to study rare H.264 reference resources. Platform: |
Size: 64512 |
Author:ren |
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Description: 离散余弦变换的设计源代码以及测试源代码和仿真图-Design of discrete cosine transform source code and test source code and simulation plan Platform: |
Size: 342016 |
Author:cong |
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Description: DCT变换后，各子带系数重组后的显示图（和小波变换的性能对照，体现了DCT 的多分辨率性能），已经测试了，可以使用-After the DCT transform coefficients of each sub-band after the restructuring is shown in Figure (wavelet transform performance and control, reflecting the multi-resolution performance of DCT), have been tested, you can use Platform: |
Size: 5120 |
Author:万玉奇 |
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