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图像空域增强处理
说明: 思想:把原始图的直方图变换为均匀分布的形式,这样就增加了灰度值的动态
范围从而达到增强图像整体对比度的效果。其优点是能自动地增强整个 图像的对比度。
1、对灰度图像进行直方图的均衡化处理,达到图像增强的目的。
2、利用平均滤波和中值滤波对图像进行平滑滤波。
3、利用拉普拉斯运算对图像进行锐化滤波。(Idea: transform the histogram of the original image into the form of uniform distribution, so as to increase the dynamic gray value
Range to enhance the overall contrast of the image. Its advantage is that it can automatically enhance the contrast of the whole image.
1. The gray image is processed by histogram equalization to achieve the purpose of image enhancement.
2. Average filter and median filter are used to smooth the image.
3. Using Laplace operation to sharpen the image.)
- 2019-11-13 16:49:49下载
- 积分:1
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Band-Reject-Digital-Filter
利用汉宁窗设计Ⅰ型数字带阻滤波器,通过Matlab实现。(Band Reject Digital Filter based on HanningI though Matlab.)
- 2011-06-16 19:51:34下载
- 积分:1
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20064817924orl_faces_112x92
说明: ORL人脸图像库,共40人,每人10幅图像,其中每人的前5幅作为训练样本,后5幅作为测试分类样本,统计正确分类率。分类准则为最近邻规则。
真实的图像尺寸为112x92,列向量堆积对应人脸库矩阵的每一列。 (ORL face image database, a total of 40 per 10 images, each of which the first five as training samples, after the 5 categories as a test sample, correct classification rate statistics. Classification criteria for the nearest neighbor rule. The real image size is 112x92, the corresponding column vector face database matrix accumulation of each column.)
- 2010-03-31 17:47:06下载
- 积分:1
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SegmentationforImagesofVCH-F1BasednmprovedWatersed
针对分水岭算法存在的过分割问题以及VCH-F1切片图像的特点,提出一种能够有效消除局部极小值和噪声干扰的自动分割方法。首先比较彩色分量梯度图,选择分量图像的梯度信息,达到有效提取图像边缘信息的目的;然后提出基于多阈值分割的方法消除无效梯度信息;最后介绍了算法的步骤及结果。实验结果证明,通过该方法处理的梯度图像再进行分水岭算法处理,即使不进行区域合并也能达到很好的效果。(Watershed algorithm for over-segmentation problem of the existence of VCH-F1 as well as the characteristics of the image slice, a can effectively eliminate the local minimum value and noise automatic segmentation method. Comparing the first color component gradient map, select the quantity of image gradient information, achieve an effective extraction of image edge information purposes then made based on multi-threshold segmentation method to eliminate invalid gradient information Finally introduce the steps of the algorithm and results. Experimental results show that the adoption of the method of treatment of gradient watershed algorithm for image re-treatment, even if there is no regional merger will also achieve good results.)
- 2008-03-28 16:14:01下载
- 积分:1
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hog
方向梯度直方图的全部代码,广泛应用于行人检测行人检测(Histogram of Oriented Gradients code Pedestrian Detection)
- 2013-10-19 20:49:05下载
- 积分:1
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SARmovingtarget
SAR运动目标成像,包含了多个点目标,结果比较清晰(SAR Moving Target Imaging)
- 2019-03-27 19:06:21下载
- 积分:1
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JPEGCompression
说明: 编码:
(1)进行颜色转换,将RGB格式转换为YUV格式。
(2)将待编码的N×N的图像分解成(N/8)^ 2 个大小为8×8的子图像。
(3)对每个子图像进行DCT变换,得到各子图像的变换系数。这一步的实质是把空间域表示的图像转换成频率域表示的图像。
(4)对变换系数进行量化。
(5)进行Z字形重排
(6)使用霍夫曼变长变码编码器对量化的系数进行编码,得到压缩后的图像(数据)。
解码:
(1) 对压缩的图像数据进行解码,得到用量化系数表示的图像数据。
(2) 进行反Z字型重排
(3)用与编码时相同的量化函数或量化值表对用量化系数表示的图像数据进行逆量化,得到每个子图像的变换系数。
(4)对逆量化得到的每个子图像的变换系数进行反向正交变换(如反向DCT变换等),得到(N/8)^2 个大小为8×8的子图像。
(5)将(N/8)^2 个大小为8×8的子图像重构成一个N×N的图像。
(6)进行颜色组合,将YUV格式转换为RGB格式图像。(JPEG compression and decompression process)
- 2019-02-18 22:58:13下载
- 积分:1
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yichuansuanfatuxiangfenge
说明: 用遗传算法实现的图像分割程序,很好用的程序!(Genetic algorithm is used to realize the image segmentation process, a good procedure to use!)
- 2008-09-09 19:26:26下载
- 积分:1
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icm1
实现ICM算法(条件迭代模型)对于灰度图像的分割(Achieve ICM algorithm (iterative model conditions) for the gray-scale image segmentation)
- 2009-05-23 09:42:49下载
- 积分:1
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find-error
基于matlab的查找并剔除野值的程序,在信号处理与数据分析方面很好用(matlab find error)
- 2013-03-26 09:33:22下载
- 积分:1