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julia
在visual c++中用分形完成的julia集,是分形的具体应用,对学分形的朋友应该有帮助(In the visual c++ Used to complete the julia fractal set, is the concrete application of the fractal, Friend of the credits should be shaped to help)
- 2008-07-10 12:29:03下载
- 积分：1
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A-Watermarking-Algorithm(MATLAB)--
盲水印提取时不需要参考原始载体图像,在信息隐藏、版权保护等方面具有更广泛的应用前景。提出的盲水印算法在分块离散余弦变换(DCT)和离散小波变换(DWT)的基础上,利用关系双方DCT系数和DWT系数在受到攻击时具有相同变化趋势的特点,采用关系嵌入和量化嵌入的自适应选择嵌入策略,较大幅度地提高了盲水印提取的鲁棒性。同时在量化嵌入中采用抖动调制,实现了水印透明性和鲁棒性调节的便捷性。大量仿真实验结果表明该算法对噪声干扰、低通滤波、JPEG压缩、对比度增强等攻击有很好的鲁棒性和透明性。关键词 数字水印盲水印关系嵌入量化嵌入离散余弦变换离散小波变换
按这篇文章的算法，自己编的matlab,没有攻击时水印提取率为1，加水印后图像PSNR有45+，。有攻击后提取率也有0.9+。(Blind watermark extraction can be fulfilled without referring to the original host image. Therefore it hasmuch
prospective applications in the fields of information hiding and copyright protection. Based on blocking Discrete Cosine
Transform (DCT) and blocking DiscreteWaveletTransform (DWT), the proposed blind watermarking algorithm uses an
embedding strategy of adaptively selecting either relationship embedding or quantization embedding. The relationship em-
bedding comes from the observation thatboth themagnitudes of coefficients concerned in the relationship usually have thesame change trend when the image is attacked. This strategy remarkably improves the robustness ofwatermark extraction.In addition, dithermodulation is used in quantization embedding, bywhich the tradeoff between transparency and robus-tness ofwatermarking can be easily adjusted. Simulation results show that the algorithm is fairly robust against the attacks such as noise, filtering, compression, and contrast )
- 2013-04-14 16:15:47下载
- 积分：1
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HC-SRO4超声波测距(STM32F103)
STM32F103开发板，HC-SRO4超声波测距模块
- 2020-12-10下载
- 积分：1
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hough_circle
说明： 通过hough变换求图像中的圆的参数（圆心坐标和半径）(Through the hough transform for image circle parameters (center coordinates and radius))
- 2008-09-14 09:27:20下载
- 积分：1
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matlab_regiongrowing
此程序为区域增长经典算法，程序后面有详细注释(This procedure is a classical algorithmfor the regional growth,the procedure followed in detail the Notes)
- 2009-03-05 14:19:04下载
- 积分：1
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five-methods-to-denoise
均值、中值、维纳、TV、小波五种图像去噪方法（matlab）.均经过运行调试。包括对五种方法的研究报告（word）。
(Mean, median, Wiener, TV, xiaobo five kinds of Wavelet Image Denoising (Matlab). Have been run debug. including The study of five ways (word).)
- 2012-07-01 21:08:13下载
- 积分：1
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leijiayanse
累加颜色直方图法图像检索,包含基本程序、图片库以及WORD说明文档(Cumulative color histogram image retrieval, including basic procedures, photo gallery and documentation WORD)
- 2011-05-21 18:30:06下载
- 积分：1
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bmp2ico
BMP,ICO,JPG等图片格式转换，按照例子可以任意格式转换(BMP, ICO, JPG and other image format conversion, according to examples can be converted to any format.)
- 2018-08-16 11:06:12下载
- 积分：1
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duibidulasheng
对比度拉伸，对原始图像进行对比度拉伸，从而得到拉伸后的图像(tensile contrast, the original image contrast stretching, and thus drawing the images)
- 2007-06-28 16:19:44下载
- 积分：1
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shibie
针对10个手写数字的识别问题，设计了一个BP神经网络，使它能够正确识别10个数字。(Against the 10 handwritten numeral recognition problem, a BP neural network is designed so that it can correctly identify the 10 digits.)
- 2009-11-25 15:34:12下载
- 积分：1
