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testBPSKVB
仿真BPSK调制在AWGN信道下分别使用卷积码和不使用卷积码的性能(Simulation BPSK modulation in AWGN channel respectively convolutional code and a convolutional code performance without)
- 2013-10-25 11:16:05下载
- 积分:1
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pcnn
利用pcnn,每当有一批像素对应的神经元点火,对像素值进行一次修正。第n次点火的所有神经元用矩阵B(n)表示,
已经点火的像素位置标记为‘1’,未点火的标记为‘0’。通过一个3*3的模板滑过B(n),判断若模板内的值全为‘1’或全为‘0’,
则这些像素值不进行处理,否则若模板中心的值为‘1’,则增加该位置的像素值的大小,中心值为‘0’,则减小像素值。该功能由xiugai(B,K)函数实现
Beta取负值来抑制周围的神经元点火,因为输入pcnn(X)的是模糊图像,抑制之后使处理的像素值更加接近原图像的像素值(抑制参数通过试验确定,并不精确)
总之运行结果只是对像素值变化较大的边缘区域进行了像素值的修正。
通过不断调整参数使峰值信噪比有所升高,但是升高得不是太多(Use pcnn, whenever a group of pixels corresponding to the firing of neurons, a correction value for the pixel. Ignition of all the n-th neuron matrix B (n) represents,
Already ignition pixel position labeled 1 , unfired labeled 0 . By a 3* 3 templates over the B (n), determines if the value within the template are all 1 or all 0 ,
These pixel values are not processed, otherwise the value if the template center 1 , then the increase in the size of the pixel values of the position, the center value of 0 , the pixel value is reduced. This function is implemented by xiugai (B, K) function
Beta is a negative value around the element to inhibit neuronal firing, because the input pcnn (X) is a blurred image, the pixel values of inhibition after treatment of the pixel value closer to an original image (suppression parameter determined by experiment, is not exact)
Results only in short run large changes in the edge region of the pixel values of the corrected pixel values.
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- 2014-12-01 09:16:42下载
- 积分:1
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OLS2D
Orthogonal Least Squares Estimate on a plane, in the simple case of a linear equation, is in fact a problem that can be easily solved analytically with no approximation (see pdf file for detailed explanation). Notice that in the general multidimensional case, an analytical solution may not exist (although Mr. Carr s function is an efficient approximation of the solution).
- 2015-02-20 02:52:34下载
- 积分:1
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image-enchance
常见的基于人类视觉特性的图像增强算法由于是同时完成动态范围压缩和对比度增强,导致增强图像的整体对比度不高、边缘部分效果不佳.通过分析人类视觉系统的全局和局部自适应调节原理及人眼视网膜神经节细胞感受野的传输特性,提出一种仿生图像增强法.为适应人类视觉系统对光强的主观感觉特性,对图像作全局亮度对数变换 并利用人眼的主观亮度感觉与实际光强的对数呈局部线性关系的特性,采用视网膜神经元感受野三高斯
模型来调整亮度图像的局部对比度 最后利用线性变换恢复图像的彩色信息.实验结果表明,该算法的增强效果良好,特别是对于图像边界处,既能很好地增强边缘对比,又可有效地提升区域亮度对比和亮度梯度信息.
(image enchancement)
- 2014-03-19 14:39:33下载
- 积分:1
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故障诊断
采用时域、频域、FFT小波变换及数学形态等分析方法完成对滚动轴承的故障诊断(Fault diagnosis of rolling bearing is completed by using time-domain, frequency domain, FFT wavelet transform and mathematical morphology.)
- 2018-04-01 16:49:07下载
- 积分:1
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lsb_embed
lsb embedding for invisible image watermarking
- 2009-05-09 21:39:22下载
- 积分:1
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StateSpaceProject
说明: 用相空间局部投影法对加噪混沌时间序列去噪或进行混沌序列与正弦信号的分离。(phase space with local law to increase the projector noise chaotic time series denoising or chaotic sequence with sinusoidal signal separation.)
- 2005-10-11 19:03:18下载
- 积分:1
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Honeywell-19001
霍尔维尼二维的激光平台,不是手持版的。。(Hall Pooh dimensional laser platform)
- 2014-08-31 21:37:53下载
- 积分:1
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MATLBline
MATLAB GUI设计中画图问题,如何在GUI的AXES中自由画线。及各种其他形状的图形。(MATLAB GUI)
- 2010-08-08 17:18:55下载
- 积分:1
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ImageSegmentation
image segmentation algo implementation using matlab
- 2009-10-28 03:04:59下载
- 积分:1