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DFT&DCT
编程实现二维8*8图像块的DFT,DCT变换
输入一副RGB图像,将其转化为YCbCr颜色空间,然后对Y分量做分块DFT变换,保存为灰度图像,统计计算时间
编程实现8*8块DCT变换,然后分别显示,当使用64个DCT系数里面的一些系数进行重构,比较其质量;同时熟悉采用FFT来实现DCT变换的思想,并显示2维8*8DCT变换的基函数图像(Programming the DFT, DCT transform of two dimensional 8*8 image block
Input a pair of RGB images, transform it into YCbCr color space, then divide the Y component into block DFT transform, save as gray image, and calculate the calculation time
The 8*8 block DCT transform is implemented by programming, and then it is shown that when using some coefficients in 64 DCT coefficients, the quality is reconstructed. Meanwhile, the idea of DCT transformation is familiar with FFT, and the base function image of the 2 dimensional 8*8DCT transform is displayed.)
- 2021-01-18 11:58:43下载
- 积分:1
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ERNSYMNTY
基于VisualC_和DCMTK的医学DICOM图像显示与调窗,同时在MFC 下完成鼠标拖动进行窗宽/窗位的调节(Medical image of DICOM VisualC_ and DCMTK display and window based on, at the same time in MFC complete the mouse to drag the window width/window regulator
)
- 2013-08-26 22:03:24下载
- 积分:1
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caffe-ssd.tar
说明: 人工智能 caffe 用与ssd yolo(Artificial intelligence SSD Yolo)
- 2020-06-19 18:00:01下载
- 积分:1
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imu
六轴陀螺仪校正算法,有详细的例子。本人已测试效果不错。(Six-axis gyroscope correction algorithm, a detailed example. I have test results are good.)
- 2016-04-14 10:26:48下载
- 积分:1
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similarityDescriptor
(cvpr)Matching Local Self-Similarities descriptor自相似描述子((cvpr)Matching Local Self-Similarities across Images and Videos)
- 2016-04-20 21:01:01下载
- 积分:1
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双峰法阈值分割
说明: 双峰法阈值分割。阈值分割法是一种基于区域的图像分割技术,原理是把图像象素点分为若干类。图像阈值化分割是一种传统的最常用的图像分割方法,因其实现简单、计算量小、性能较稳定而成为图像分割中最基本和应用最广泛的分割技术。它特别适用于目标和背景占据不同灰度级范围的图像。它不仅可以极大的压缩数据量,而且也大大简化了分析和处理步骤,因此在很多情况下,是进行图像分析、特征提取与模式识别之前的必要的图像预处理过程。图像阈值化的目的是要按照灰度级,对像素集合进行一个划分,得到的每个子集形成一个与现实景物相对应的区域,各个区域内部具有一致的属性,而相邻区域不具有这种一致属性。这样的划分可以通过从灰度级出发选取一个或多个阈值来实现。(Threshold segmentation)
- 2018-03-29 09:29:03下载
- 积分:1
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hogfeature
利用积分图的方式提取图像hog特征,用于人脸、行人检测。(Using the integral plot to extract the image hog feature, for human face, pedestrian detection.)
- 2021-04-21 12:58:49下载
- 积分:1
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PCA4Images
说明: 基于Matlab的系列图像处理和显示结果程序,采用主成分分析算法,假定载入系列图像数据后可直接运行得到结果。(Matlab based on a series of image processing and display the results of the procedure, using principal component analysis algorithm, it is assumed that loading series of image data can be directly after the operation results.)
- 2008-10-30 16:46:31下载
- 积分:1
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GradsSharp
可用于CCS3.3的数字图像边缘锐化处理(Digital image edges can be used for sharpening CCS3.3)
- 2014-10-28 11:52:14下载
- 积分:1
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EDLines 快速直线检测算子
EDLines是一种快速直线检测算子,2012年在ICCV上提出,也是目前处理直线检测最快的算法之一,该算法包含三个步骤:(1)边缘提取:利用Edge Drawing (ED)算法[28,29]从灰度图像中提取边缘片段;(2)线段检测:利用最小二乘法提取直线段;(3)线段确认:遵循Helmholtz定律,从已提取的直线段中摒弃虚假线段。EDLines算法的优越性得益于Edge Drawing (ED)算法能够从灰度图像中准确、快速、稳定地提取出光滑、完整的边缘片段。Edge Drawing (ED)算法包含以下步骤:
(1)采用size=5*5,σ=1的高斯核对灰度图像进行平滑滤波,去除噪声;
(2)采用一种常用的梯度算子,如Prewitt、Sobel或Scharr等计算平滑后图像中每个像素点的梯度幅度和梯度方向;
(3)将梯度图中邻域内幅度最大的像素点标记为锚点,这些锚点成为图像边缘点(edge elements)的概率很大;
(4)将相邻的锚点连接成边缘线。从一个锚点起始,ED利用相邻像素的梯度幅度和方向在梯度为最大值的锚点之间游走。
(Edge Drawing (ED) is our recently-proposed, novel, fast edge detection algorithm. What makes ED stand out
the existing edge detectors, e.g., Canny, is the following: While the other edge detectors give out a binary
edge image as output, where the etected edge pixels are usually independent, discontinuous entities ED produces a
set of edge segments, which are clean, contiguous, i.e., connected, chains of edge pixels. Thus, while the output of
the other edge detectors requires urther processing to generate potential object boundaries, which may not even be
possible or result in inaccuracies ED not only produces perfectly connected object boundaries by default, but it also achieves this in blazing speed compared to other edge detector.)
- 2021-03-22 16:29:16下载
- 积分:1