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dft

于 2008-09-22 发布 文件大小:348KB
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代码说明:

说明:  基于dft的水印代码,水印注入、提取、防攻击测试(DFT-based watermarking code, watermark injection, extraction, anti-attack test)

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    个人编写的提升格式97小波去噪,采用硬阈值法,三层分解,包括小波变换,去噪,逆变换三步(Written format of 97 individuals to enhance the wavelet denoising using hard threshold method, three decomposition, including wavelet transforms, denoising, inverse transform three-step)
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    积分:1
  • 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 )
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    基于小波变换的心电信号预处理MATLAB源代码(The heart preprocessind based on wavelet transform)
    2020-06-29 03:00:02下载
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    2020-06-07 22:44:15下载
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    2007-03-20 11:07:40下载
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  • xiaobonenglaign
    本程序为小波包能量计算程序,根据相关资料,自己编写,计算感兴趣的频带能量,程序懂得人稍作修改就可以运行( U672C u7A0B u5E8F u4E3A u5C0F u6302 u803F0 u0B1 u7B97 u7A0B u5E8F uFF0C u6839 u636E u76R8 u5173 u8D44 u6599 uFF0C u81EA u5DF1 u7F16 u5199 UFF0C u8BA1 u7119 u6119 u5113 u8E1 u7684 u9891 u5E26 u80FD u91CF uFF0C u7A0B u5E8F u61C2 u5F97 u4EBA u7A0D u4F5C u4FEE u6539 u5C31 u53EF u4EE5 u8FD0 U884C)
    2017-05-18 08:53:12下载
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  • 【全美经典】小十讲(Ingrid Daubechies 着)
    《小波十讲(修订版)》主要内容简介:原书《小波十讲》(ten lectures on wavelets)是一本世界范围公认的经典学术名著,是当代数学著作中一本影响巨大的绝妙好书。(text book for wavelet analysis)
    2018-04-07 16:47:09下载
    积分:1
  • waveletrans
    给出了小波变换的具体java实现,小波变换的java程序,共包括waveletgen.java 和transformation.java(given wavelet transform to achieve specific java, java wavelet transform procedures, it includes waveletgen.java and transformation.java)
    2006-07-26 16:25:15下载
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  • wave_image
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    2015-04-23 17:00:07下载
    积分:1
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