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【GIS program】基于DCT变换的图像编码方法研究 DL : 0: 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.
Update : 2024-04-30 Size : 5011456 Publisher : lzy
【Wavelet】 dct变换的VC实现 DL : 0: DCT变换的VC实现，对研究DCT如何用C实现有很大的参考作用，或可直接调用-DCT VC to study how to use C DCT achieve a great reference, or direct call
Update : 2024-04-30 Size : 13312 Publisher :
【Multimedia Develop】所有dct DL : 0: 我所有的dct变换程序，包括mmx，sse，sse2等，对于大家应该有用。-all my A1501 transform procedures, including mmx, SSE, SSE3, should be useful for everyone.
Update : 2024-04-30 Size : 37888 Publisher : 潘敏
【Compress-Decompress algrithms】基于DCT的jpeg图像压缩编码算法的MATLAB实现 DL : 2: 这是一个基于DCT的jpeg图像压缩编码算法的MATLAB实现的程序,对做jpeg压缩的朋友会很有帮助-this is matlab jpeg compression based on dct,it is helpful for who embark on jpeg compression.
Update : 2024-04-30 Size : 40960 Publisher : 杨晖
【GDI-Bitmap】 DCT算法实现 DL : 0: 普通DCT，快速DCT,快速IDCT算法的实现 vc程序希望你喜欢！-ordinary DCT, fast DCT and IDCT algorithm for the rapid realization vc procedures hope you like!
Update : 2024-04-30 Size : 137216 Publisher : ddda
【Streaming Mpeg4】 fdct快速dct变换 DL : 0: 演示快速DCT变换和普通dct变换的区别-demonstration FDCT and ordinary Extra transform the difference
Update : 2024-04-30 Size : 78848 Publisher : lianzhang
【Special Effects】图像dct变换的程序 DL : 0: 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.
Update : 2024-04-30 Size : 1024 Publisher : 朱晓路
【DSP program】 exp-dct DL : 0: 在DSP上实现DCT的三角波，方波，正弦波的显示，一个好程序，全的-on DSP for DCT triangular wave, square wave, the sine wave, a good process, and all the
Update : 2024-04-30 Size : 12288 Publisher : 朱岩
【Books】基于MATLAB的DCT域数字图像水印技术 DL : 0: 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
Update : 2024-04-30 Size : 861184 Publisher : bob
【3D Graphic】 C-DCT DL : 0: 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
Update : 2024-04-30 Size : 1024 Publisher : 廖和
【Other】 VC-DCT DL : 0: 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
Update : 2024-04-30 Size : 137216 Publisher : 刘铭
【Multimedia Develop】 dct+ss DL : 0: dct变换+扩频的数字水印算法水印为随即序列-Extra transform Spread Spectrum Watermarking digital watermarking algorithm for the forthcoming series
Update : 2024-04-30 Size : 18432 Publisher : sy
【Special Effects】 DCT-transform DL : 0: 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.
Update : 2024-04-30 Size : 134144 Publisher : 何忠
【WEB Code】 JPEG-DCT DL : 0: JPEG压缩核心变换DCT实现源码，用matlab7.0实现-JPEG compression core transform DCT achieve source used to achieve matlab7.0
Update : 2024-04-30 Size : 1024 Publisher : song
【Special Effects】 DCT-matlab DL : 0: 数字版权保护的毕业设计，利用DCT进行变换，但是算法比较新颖，里面包括所有的matlab程序。-digital copyright protection graduation design, for the use of DCT transformation, but rather novel algorithm, includes all the Matlab procedures.
Update : 2024-04-30 Size : 52224 Publisher : 刘伟
【Documents】 DCT-1 DL : 0: (discret cosine transform,DCT) IInterduce-(discret cosine transform, DCT) IInterduce
Update : 2024-04-30 Size : 135168 Publisher : joe
【Graph program】 MATLAB(DCT+DWT) DL : 0: 图像数字水印的方案毕业论文，基于dct和dwt的算法，有详细程序。-digital watermark image of the program thesis, based on Extra dwt and the algorithm, a detailed procedure.
Update : 2024-04-30 Size : 1234944 Publisher : shen
【Special Effects】 dct-watermark-embed-detection DL : 0: 基于DCT域的数字图像水印的处理，经测试可以达到对水印检测的功能-DCT-based digital watermark image processing, testing can be achieved by the right watermark detection function
Update : 2024-04-30 Size : 2048 Publisher : 胡先生
【Other】 fft+DCT DL : 0: 自己手写的图像的FFT变换和DCT变换的MATLAB代码-own handwritten Image Transform FFT and DCT MATLAB code
Update : 2024-04-30 Size : 750592 Publisher : Alex
【DSP program】 DCT-DSP DL : 0: DCT算法在DSP上的实现，汇编语言，在DSP开发板上调试通过-DCT algorithm on DSP realization of assembly language, in DSP development board through debugging
Update : 2024-04-30 Size : 167936 Publisher : suobin

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