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离散正交小波变换及小波重构,程序中给出测试数据,可得到这组数据小波分解后的低频分量和重构以后的数据-Discrete orthogonal wavelet transform and wavelet reconstruction, procedures given in the test data, available in this set of data after wavelet decomposition and reconstruction after low-frequency co
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视频文字识别在视频分析与检索中有着重要作用,该算法对字幕图像进行N层小波分解,获得该视频文字的低频分量,再借助相似性度量方法实现视频文字的识别。-Video character recognition in the video analysis and retrieval plays an important role in the algorithm of subtitles images N layer wavelet decomposition, which is low-frequenc
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实现小波变换调用upcoef 函数,根据近似(低频)分量和细节(高频)分量进行重构-Wavelet transform to achieve upcoef function call, according to approximation (low frequency) component and details (high frequency) component is reconstructed
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音频信号的水印设计,以音频信号为载体,将秘密信号嵌入载体音频信号当中,
实现音频信号的水印。采用变换域小波变换(DWT)的技术,将音频信号进行小波变换,提取出低频分量,然后将水印嵌入到音频信号的低频当中。实验当中先在MATLAB 上面进行了仿真实验,并且通过加入噪声以及滤波等进行干扰以此检测了算法的透明性和健壮性,然后利用C 语言进行了测试,最后经
过一些修改,例如加入定时器以及进行中断的处理和加入缓冲在DSP 板子上实现了加入水印的音频声音的播放。-Audio signal water
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利用二维Mallat小波分解原理,对一幅标准图像进行3级分解,获取小波高/低频系数,并分别用低频分量LL1、LL2、LL3小波系数进行图像重建,分别计算这三种情况和原始图像比较地PSNR-2D Mallat wavelet decomposition principle, a standard image 3 decomposition, to obtain of Wavelet high/low frequency coefficients, and the low-frequency com
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对某一标准图像进行二维Mallat小波的3级分解,获得小波高/低频系数,分别
用低频分量LL1、LL2、LL3的小波系数进行图像重建,分别计算这三种情况
和原始图像比较的PSNR。-A standard image 3 2D Mallat wavelet decomposition, wavelet high/low frequency coefficients , respectively
Low frequency component LL1 , LL2, LL3 wavelet
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