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JPEG 标准的最新进展是 1996 年开始制定, 2001 年正式成为国际标准的 JPEG 2000 。与 JPEG 相比, JPEG 2000 作了大幅改进,其中最重要的是用离散小波变换( DWT )替代了 JPEG 标准中的离散余弦变换。在文件大小相同的情况下, JPEG 2000 压缩的图像比 JPEG 质量更高,精度损失更小。作为一个新标准, JPEG 2000 暂时还没有得到广泛的应用,不过包括数码相机制造商在内的许多企业都对其应用前景表示乐观, JPEG 2000 在图像压缩领域里
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这是一个用C写的傅立叶变换,以及离散余弦变换的代码,在图象压缩中会用到-This is a C wrote Fourier transform, discrete cosine transform, and the code in image compression will be used
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基于离散余弦变换域处理的快速台标插入法,Mpeg2,TS-Based on the discrete cosine transform domain processing fast logo insertion method
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基于态函数的离散分数余弦倒谱变换在取证话音信息隐藏中的应用-Cepstrum based on the state function of discrete fractional cosine transform application in forensics speech information hiding
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Image compression on Discrete Cosine Transform
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实现了在matlab下音频信号的dct(离散余弦)和fft(傅里叶变换)相对matlab工具箱,有快速准确的效果。-Realized the dct (discrete cosine) of the audio signal in matlab fft (Fourier transform) relative matlab toolbox, fast and accurate results.
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JPEG 2000 is an image compression standard and coding system. It was created by the Joint Photographic Experts Group committee in 2000 with the intention of superseding their original discrete cosine transform-based JPEG standard (created in 1992) wi
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The Discrete Cosine Transform Theory and Application1
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Discrete Cosine Transform for JPEG
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