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3.1 概述
3.2 可分离图像变换
3.3 离散傅里叶变换和性质
3.4 快速傅里叶变换
3.5 离散沃尔什变换
3.6 离散余弦变换
3.7 小波变换
-3.1 overview 3.2 detachable image transform 3.3 Discrete Fourier Transform and Fast Fourier Transform 3.4 Properties 3.5 Discrete Walsh Transform 3.6 Discret
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摘 要 运动模糊恢复就是利用运动模糊退化的某种先验知识来重建或恢复原有图像 在运动模糊的点扩散函数未知的情况下
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估计运动模糊的点扩散函数是运动模糊恢复的前提和关键 从傅立叶变换的角度对匀速直线运动模糊图像的点扩散函数在频域
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论证了点扩散函数在频域内的零点特性及模糊图像两次傅立叶同态变换后的方向特性 并提出了利用这中的特点做了理论分析,些特性进行运动模糊方向估计的方法及两种模糊距离的估计方法 实验结果证明了所提出方法的有效性-Abstract motion blur
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数字图像变换，主要介绍傅立叶变换和余弦变换及其性质-Digital image transform, introduces the Fourier transform and cosine transform and its properties
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an introduction to wavelets
-Wavelets are mathematical functions that cut up data into di® erent frequency components,
and then study each component with a resolution matched to its scale. They have advantages
over traditional Fourier method
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Coefficients a and b control the low and high frequency ranges that the watermark affects. Because of the watermark invariant properties, we embed the watermark only in the Fourier descr iptor magnitude. We use the inverse Fourier transform of the Fo
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2004年关于分数傅立叶变换的文章 - The centered discrete fractional Fourier transform, properties, computation, and application to linear chirp signals-2004 article on Fractional Fourier Transform- The centered discrete fractional Fourier transform, properties, com
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基于MATLAB平台的PWM调制正弦波的快速傅里叶分析-his model simulates and computes Fourier analysis of PWM based sinusoidal waveform. Fundamental frequency can be changed in model properties. Amplitude modulation index and frequency modulation index can be adjusted in Sim
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Due to the properties of sine and cosine, it is possible to recover the amplitude of each wave in a Fourier series using an integral. In many cases it is desirable to use Euler s formula
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Properties of Fourier transform.
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