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- 2 - D wavelet transform 二维小波变换
- Integer CDF(2,2),CDF(2,4)biorthogonal wavelet transform may be completed by add and shift operation,fast,easy to implemented by hardware. 整数CDF(2,2)、CDF(2,4)可逆双正交小波变换可以由加法和移位完成,运算速度快,便于硬件实现。
- Antonini M. Barland M. Mathicu P. et al. Image coding using wavelet transform [J]. IEEE Trans. On Image Processing, April 1992, 11 (2). 陈俊;苏凯雄.;小波变换在视频压缩编/解码系统中的应用[J]
- Objective Apply wavelet transform to denoise medical image. 摘要目的利用小波变换进行医学图像去噪。
- Denoising analysis of OTDR data based on wavelet transform[J]. 引用该论文 王韶波;李康;孔繁敏;吴涛.
- Methods of signal processing in LIA based on wavelet transform[J]. 引用该论文 杨兴林;王华岑;徐铁铮;李劲.
- In the conventional wavelet transform,all the lines are filte re d before column wavelet transform starts and then embedded quantization and enc oding are re quired. 在传统的图像小波变换中,首先需要对每行进行小波变换,等所有的行变换完成后再进行列小波变换,然后再进行嵌入式量化和编码,这就需要足够的存储容量保存这些变换结果,而且运算速度也慢。
- Losless encoding of CDF(2,2)combine with SPIHT comparison whit ARJ ,JPEGLS and integer Haar wavelet transform with DPCM,improved compression rate by40%,30%,15%respectively. CDF(2,2)结合SPIHT编码的无损图象压缩比与ARJ,JPEGLS,整数Haar变换结合DPCM相比分别平均提高了40%25,30%25,15%25左右。
- By using wavelet transform, the emission of HHG in different time is obtained. 利用小波变换,观察了高次谐波在不同时刻的发射情况。
- In this paper, wavelet transform with nonlinear scale (NWT) is introduced. 我们介绍了一种非线性尺度小波变换(Wavelettransformwithnonlinearscale,NWT)。
- Usually,wavelet transform module maximum accords with saltation points. 小波变换模的极值点常对应于信号突变点。
- The wavelet transform is used to analyze some voltage signals what it detected. 利用小波变换对所检测到的电压信号进行了分析。
- Finally, the fused image was reconstructed through inverse wavelet transform. 最后,通过小波逆变换得到融合图像。
- Wavelet transform is an efficient mathematical tool for singularity detection. 小波变换是检测信号奇异点的种有效的数学工具。
- Objective Compressing medical images in DICOM format by wavelet transform. 目的利用小波变换实现对医学DICOM图像压缩。
- Wavelet transform is of good localization property in signal analysis. 小波变换在信号分析中具有良好的局部化特性。
- By defining the wavelet transform on L 2(R n,H),we get the corresponding reconstruction formula in this paper. At the same time,we obtain the Parseval equation of quaternion value function on continuous wavelet X ray transform. 定义了L2 (Rn,H)中的小波变换 ,给出了相应的重构公式 ,同时 ,得到了四元数值函数的连续小波X光变换的Parseval恒等式
- This paper presents an image watermarking technology based on disperse wavelet transform. 提出了一种子离散小波变换域实现图象水印的方法。
- A lossless scheme of a binary image watermark based on wavelet transform is proposed. 摘要针对二值水印图像,提出一种基于小波的无损的数字水印系统。
- The wavelet transform(WT) is a new mathematical tool which will show great prospects in the NIR field. 同时,阐述了光谱的预处理,其中的小波变换方法是一种新的数学工具,有著广泛的应用前景。