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stran
基本的S变换matlab实现 用于时频分析 为初学者提供基本代码(S transformation for time-frequency analysis to provide basic code for beginners)
- 2021-01-13 16:38:48下载
- 积分:1
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wave
用于进行小波变换,对原始的光谱图像数据进行预处理(Used wavelet transform, the original spectral image data preprocessing)
- 2014-01-07 22:55:01下载
- 积分:1
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wavelet-watermark
this watermarking is implemented using wavelet transform..
- 2012-01-02 20:31:13下载
- 积分:1
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harr
二代小波harr变换整数小波变换,适合图像处理专业人员参考(Second generation wavelet transform Harr integer wavelet transform for image processing professionals reference)
- 2008-12-13 06:52:33下载
- 积分:1
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shortwave
matlab提升小波变换与应用初步,包括小波变换的一些改进(the matlab enhance wavelet transform and application of the preliminary)
- 2012-03-23 09:42:23下载
- 积分:1
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Wavelets
说明: 小波变换技术与工程实践:图像的小波变换(MFC框架下)(Wavelet transform technology and engineering practice: Image Wavelet Transform (MFC framework))
- 2008-09-08 23:18:34下载
- 积分:1
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wavelet
用MATLAB对一语音信号进行小波分解,然后对其各层系数进行处理以达到小波抑制的目的,重构处理后的信号,画出波形分析;用MATLAB实现对一语音信号用不同小波进行分解,提取各层的高低频系数,画出各系数波形,并重构;用MATLAB对一图象分别用不同小波分解,观察高低频部分进行重构,比较重构误差,再进行阈值消噪,比较消噪前后图象;用MATLAB对一语音信号进行小波分解,分别用强阈值,软阈值,默认阈植进行消噪处理。(Wavelet decomposition and reconstruction)
- 2012-05-03 14:41:04下载
- 积分:1
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Ten.Lectures.on.Wavelets
小波十讲中文、切边优化版本,适合直接在kindle阅读(<Ten Lectures on Wavelets>)
- 2012-02-17 16:06:09下载
- 积分:1
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decomposition
运行emd,得到输入信号X的固有模态函数(imf),每列代表着信号X的一阶分量,X就是我们采集的信号。
hhtdn是hht去噪的程序,可以不看,仅看emd 和 findpeaks
wvtdn是wavelet去噪程序,如果只是分解信号,仅用下面的语句即可
[C,L] = wavedec(x_noise,dl,wn);
x_noise就是我们采集的信号,dl是分解的阶数,wn是分解的母小波名称(% Empiricial Mode Decomposition (Hilbert-Huang Transform)
% imf = emd(x)
% Func : findpeaks)
- 2021-04-13 22:28:55下载
- 积分:1
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50
说明: 多媒体技术的发展和视觉信息的飞速膨胀迫切需要对视觉信息资源的有效管理和检索。由此,基于内容的图像和视频检索技术得到了越来越多的重视,成为了多媒体信息检索和图像处理领域中的重要研究方向。CBIR技术将对大规模图像信息的管理和访问提供有力支持。
本文这种介绍了内容图像检索的灰度特征实现方法,具有理论意义和实际应用价值。针对基于内容图像检索技术进行了研究,介绍了其研究现状和关键技术,讨论了其技术瓶颈和发展趋势。共生矩阵法,是对图像的所有像元进行统计调查,以便描述其灰度分布的一种方法。分析了这种基于广义图像灰度共生矩阵的图像检索方法,该方法首先将原图像作平滑处理得到平滑图像,然后将原图像和平滑图像组合得到广义图像灰度共生矩阵,提取该矩阵的统计特征量,最后将该统计量组成归一化向量用以检索。
实验结果表明,本方法的效果要优于单纯的灰度共生矩阵法。在对相似图像检索时,该算法与基于共生矩阵的经典算法相当,在面临同一图像大小显著改变或发生旋转的情况下,该算法明显优于经典算法。相比较而言,该算法提高了检索的有效性。
(The development of multimedia technology and the expansion of visual information,which cries for the effective management and retrieval methods of visual information. Thus, the image and video searching technology based on content is gaining more and more attention to become a multimedia information retrieval and image processing in the field of important research direction. The technology of CBIR provides effective supports for the management and access of extensive image information.
This paper introduced the content of the image retrieval method characteristics of gray, with theoretical and practical value. This paper does an extensive and in-depth study of technology based on content image retrieval to, presenting their research status and key technologies, discussing its development trends and technological bottlenecks. Co-occurrence matrix of all the pixel image survey has been conducted in order to describe a method of distribution of gray. This paper analyses this broad-based )
- 2009-10-21 11:44:54下载
- 积分:1