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- The watermark can be retrieved by using either optical or digital Fourier transform on halftone images containing the watermarked information. 水印的提取過(guò)程只需對含有水印信息的半色調圖像進(jìn)行光學(xué)或數字的傅里葉變換即可完成。
- A Fourier transform does this, but with waves. 傅立葉變化就是這樣，但是它是按照波的情況。
- The Discrete Fourier Transform (DFT) plays an important role in digital signal processing and many other fields. 離散傅里葉變換 (DFT)在數字信號處理等許多領(lǐng)域中起著(zhù)重要作用 .
- Correction of Nonparaxial and Misfocus Aberrations in Digital Lensless Fourier Transform Holography[J]. 引用該論文 Jiang HongZhen;Zhao Jianlin;Di Jianglei;Yan Xiaobo;Sun Weiwei.
- Using convolution and fast Fourier transform(FFT) algorithm to calculate diffraction integral,the CGH is reconstructed by digital focus method. 通過(guò)卷積和快速傅立葉變換 (FFT)的方法計算衍射積分 ,以數字聚焦的方法進(jìn)行再現。
- Using discrete Fourier transform for interpolation of 3-D MT data. 用傅氏變換實(shí)現三維MT數據的插值
- The discrete fourier transform (DFT) exists the errors. 摘要離散傅立葉變換(DFT)存在誤差。
- Windowed Fourier transform for 3 - D shape measurement[J]. 引用該論文 付艷華;陳文靜;蘇顯渝.
- The characteristic analysis of hololens Fourier transform[J]. 引用該論文 王紅霞;盛兆玄;趙瑋;李育新.
- Analysis on an Improved Fourier Transform Profilometry[J]. 引用該論文 毛先富;陳文靜;蘇顯渝.
- Introduction the Fourier series, Convolution,Laplace transform, Z-transform, Discrete time and fast Fourier transform, Adaptive filter,digital filter. 介紹傅立葉,拉式,Z轉換之數學(xué)運算,同時(shí)應用于離散與計算快速傅立葉轉換,而此數學(xué)運算使用時(shí)數位濾波器之應用
- In this system, DSP drives CCD to collect signals, converts analog signals to digital signals, completes fast Fourier transform, and controls LCM to display spectrogram. 整個(gè)系統通過(guò)DSP驅動(dòng)CCD傳感器采集信號,并由DSP完成模數轉換以及各種變換運算,最后由DSP控制液晶顯示模塊輸出光譜曲線(xiàn)。
- In this paper, By use of the holographic theory and Fourier transform spectrum analysis, The impulse response and resolving power of Fresnel digital holography is presented. 本文依據全息理論和付里葉頻譜分析，對菲涅爾數字全息系統的脈沖響應和分辯本領(lǐng)進(jìn)行了理論分析。
- Some interpolated Discrete Fourier Transform (DFT) methods are analyzed. 本文首先討論并分析了各種插值DFT(離散傅里葉變換)算法,然后提出了一種實(shí)正弦信號的快速插值頻率估計方法。
- Fractional Fourier transform of apertured paraboloid refracting system[J]. 引用該論文 陳建農;閆金良;王德法;于永江.
- We use Fast Fourier Transform arithmetic to calculate two seriate images. 在相鄰兩幀圖像上，找出相關(guān)度最大的兩個(gè)小區域，用它們之間的距離除以?xún)纱闻臄z之間的時(shí)間間隔，就得到這個(gè)小區域在間隔時(shí)間內的平均速度，進(jìn)而得到整個(gè)流場(chǎng)的速度分布。
- Some applications of the fast Fourier transform to the polynomial calculation. 多項式計算當中快速傅立葉變換的應用。
- Fractional Fourier Transforms for Cosh-Gaussian Beams[J]. 引用該論文 陳天祿;吳平.
- Utilizing the measured data of the phases and the amplitudes, several objects (Arabic numerals) have been reconstructed by digital inverse Fourier transformation and the results are agreeable with the input objects. 利用測到的位相和振幅數據,作為物函數的幾個(gè)阿拉伯數字被逆數字傅里葉變換反演,其結果與輸入物函數一致。
- In this paper, a pulsar de-dispersion algorithm based on the Short Time Fourier Transform (STFT) is presented. 摘要敘述了一種基于短時(shí)傅立葉變換的脈沖星消色散算法。
