A method for image processing is disclosed. A non-normalized cross correlation is used to produce a cross correlation matrix between a recorded image, which contains at least one captured object, and a reference image, which contains a reference object. A comparison between a plurality of regions...
互相关函数和卷积运算几乎一样，但没有对核进行翻转。很多资料把互相关函数称为卷积。如截图所示（图中...
原文:The mechanics of convolution are the same, except that the filter is first rotated by 180°. 3.4.2-Spatial Correlation and Convonlution-Digital Image Processing 3ed Gonzalez 编辑于 2017-07-20 16:20 赞同3添加评论 分享收藏喜欢收起 查看全部 10 个回答...
A modified cross-correlation algorithm for Ply image processing of particle-fluid two-phase flow 喜欢 0 阅读量: 37 作者:Pang,Mingjun,Shi,Baocheng,Wei,Jinjia 摘要: PIV (Particle Image Velocimetry) technique for flo 关键词:Two-phase flow field Algorithm Post-processing PIV/PTV ...
Computer vision techniques have been employed to characterize dynamic properties of structures, as well as to capture structural motion for system identification purposes. All of these methods leverage image-processing techniques using a stationary camera. This requirement makes finding an effective location...
In this paper, we propose a fast pattern matching algorithm based on normalized cross correlation (NCC) with centroid bounding to achieve very efficient search. The algorithm will calculate histogram around centroid within maximum circle with radius R. After dividing the image into blocks by R×R ...
(discrete FT) to dramatically reduce computation time and memory without sacrificing accuracy. With this procedure all the image points are used to compute the upsampled cross-correlation in a very small neighborhood around its peak. This algorithm is referred to as the single-step DFT al...
Optical flow or image motion estimation is important in the area of computer vision. This paper presents a fast and reliable optical flow algorithm which produces a dense optical flow map by using fast cross-correlation and shortest-path techniques. Fast correlation is achieved by using the box ...
Basic Concepts in Signal Processing John Semmlow, in Signals and Systems for Bioengineers (Second Edition), 2012 Solution: If the crosscorrelation is to include all possible shifts, we need to determine what to do when a shifted signal falls outside the range of the other signal. The common...
We have recently presented a new method to suppress side lobes and clutter in ultrasound imaging called dual apodization with cross-correlation (DAX). However, due to the random nature of speckle, artifactual black spots may arise with DAX-processed images. In this paper, we present one possible...