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[Algorithm] 2D-DCT变换 DL : 16: 免费下载

Date : 2008-12-15 Size : 125.65kb User : liziqing
[Algorithm] dct_p DL : 0: 这是用VHDL语言(硬件描述语言)写的一个二维 8*8块的离散余弦变换(DCT)以及反变换(IDCT).全同步设计,低门数.可以用于多媒体及打印应用领域.-VHDL (hardware description language) wrote a two-dimensional 8* 8 discrete cosine transform (D CT) and the anti-transform (IDCT). fully synchronous design, low gate count. can be used for multimedia and print applications.
Date : 2025-12-23 Size : 32kb User : citybus
[Algorithm] LOT_img DL : 0: lapped transforms for images. lapped transform is a very fast algorithm to replace dct.
Date : 2025-12-23 Size : 7kb User : sjtuzyk
[Algorithm] fft DL : 0: 由上述实验过程的图像变化可知，经过傅立叶变换和反变换及DCT离散余弦变换和反变换后，图像都发生了很大的变化，首先是经过2-D傅立叶变换后，图像数据频域出现高频数据集中，低频数据在四周的现象，然后再经过2-D傅立叶变换反变换后，图像再次恢复原始图。而2-D离散余弦变换对图像的影响也是如此。-From the above experiment, we can see the image change, after Fourier transform and inverse transform and DCT discrete cosine transform and inverse transform, the images have changed a lot, first of all, is a 2-D Fourier transform, the image data emergence of high-frequency frequency-domain data, low-frequency data in the four weeks of the phenomenon, and then after a 2-D Fourier transform inverse transform, the image again to restore the original map. And 2-D discrete cosine transform on the impact of images is also true.
Date : 2025-12-23 Size : 464kb User :
[Algorithm] DCT-SRC-CODE DL : 0: 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.
Date : 2025-12-23 Size : 147kb User : bmws
[Algorithm] DCT DL : 0: 离散余弦变换，选择图像后选择功能项，会得到经过离散余弦变换后的图像-Discrete cosine transform, select after the selection of images, which will be after a discrete cosine transform image
Date : 2025-12-23 Size : 1.54mb User : xinrui
[Algorithm] dct DL : 0: DCT by using c -DCT DCT by using c
Date : 2025-12-23 Size : 2kb User : hotfire
[Algorithm] FDCT DL : 0: 快速离散余弦变换程序，运行于TI公司的DSP-Fast discrete cosine transform process, running on TI s DSP
Date : 2025-12-23 Size : 63kb User : 陆
[Algorithm] FFT DL : 0: 对图像进行离散余弦变换处理，包含FFT，DCT-On discrete cosine transform image processing, including FFT, DCT
Date : 2025-12-23 Size : 1kb User : waternie
[Algorithm] fdct DL : 0: 这是一个用C++写的完成快速DCT变换的程序-This is a C++ Write fast DCT transform the completion of the procedures
Date : 2025-12-23 Size : 2.39mb User : angel
[Algorithm] dctFFTW DL : 0: 基于fftw的dct程序，FFTW是一个快速的免费的基于c语言的FFT 库-A fast, free C FFT library includes real-complex, multidimensional, and parallel transforms.
Date : 2025-12-23 Size : 1kb User : 张克新
[Algorithm] watermark DL : 0: watermarking algorithm base on dct
Date : 2025-12-23 Size : 1kb User : meysam
[Algorithm] DiscreteCosineTransform DL : 0: DCT A discrete cosine transform (DCT) expresses a sequence of finitely many data points in terms of a sum of cosine functions oscillating at different frequencies. DCTs are important to numerous applications in science and engineering, from lossy compression of audio and images (where small high-frequency components can be discarded), to spectral methods for the numerical solution of partial differential equations. The use of cosine rather than sine functions is critical in these applications: for compression, it turns out that cosine functions are much more efficient (as explained below, fewer are needed to approximate a typical signal), whereas for differential equations the cosines express a particular choice of boundary conditions.
Date : 2025-12-23 Size : 8kb User : iso
[Algorithm] dct_source_code DL : 0: DCT变换演示代码 DCT变换是离散余弦变换(Discrete Cosine Transform)的缩写，DCT变换是一种正交变换，能把能量尽量集中-DCT transform demo code
Date : 2025-12-23 Size : 12.42mb User : 刘晓明
[Algorithm] efficientchannelestimationbasedondiscretecosinetra DL : 0: 论文中提出了了一种适用于正交频分复用的基于离散余弦变换（DCT）变换导频辅助的信道估计法。这种方法可以减小基于离散傅里叶变换（DFT）的信道估计器中的混叠效应-Presented a paper suitable for orthogonal frequency division multiplexing based on discrete cosine transform (DCT) transform the pilot aided channel estimation. This method can reduce the discrete Fourier transform (DFT) of the channel estimator in aliasing effects
Date : 2025-12-23 Size : 234kb User : 雨儿
[Algorithm] DCT8x8 DL : 0: 归一化值为8x8图像的DCT算法，同时包括量化，编码及压缩率计算的程序-Normalized value of 8x8 image DCT algorithm, while including quantization, coding and compression rate of the procedure
Date : 2025-12-23 Size : 1.12mb User : 周芳燕
[Algorithm] DCT DL : 0: 一個傳統DCT與快速DCT的源碼，加上一些壓縮技巧讓圖片大小更小。快速DCT的速度比傳統的速度降了一個order。-Comparison between direct DCT and fast DCT. And some compression method.
Date : 2025-12-23 Size : 8kb User : Chung-Hao Wu
[Algorithm] DCT_algorithm DL : 0: 利用fft的dct算法，是个doc文件，里面列了代码和注释-Fft algorithm using the dct is a doc file, which listed the code and comments
Date : 2025-12-23 Size : 10kb User : 胡朝红
[Algorithm] dct DL : 0: DCT - Discrete Consine Transformation
Date : 2025-12-23 Size : 584kb User : flash
[Algorithm] an-analasys-of-LSB-a-DCT-based-steganegraphy DL : 0: an analasys of LSB & DCT based steganegraphy
Date : 2025-12-23 Size : 648kb User : Le Thanh

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