Description: The problem of image registration subsumes a number of problems and techniques in multiframe
image analysis, including the computation of optic flow (general pixel-based motion), stereo
correspondence, structure from motion, and feature tracking. We present a new registration
algorithm based on spline representations of the displacement field which can be specialized to
solve all of the above mentioned problems. In particular, we show how to compute local flow,
global (parametric) flow, rigid flow resulting from camera egomotion, and multiframe versions of
the above problems. Using a spline-based description of the flow removes the need for overlapping
correlation windows, and produces an explicit measure of the correlation between adjacent flow
estimates. We demonstrate our algorithm on multiframe image registration and the recovery of 3D
projective scene geometry. We also provide results on a number of standard motion sequences. Platform: |
Size: 486459 |
Author:刘长乐 |
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Description: AVS运动补偿电路的VLSI设计与实现
提出了一种基于AVS标准的高效的运动补偿电路硬件结构，该设计采用了8 X 8块级流
水线操作，运动矢量归一化处理和插值滤波器组保证了流水线的高效运行以及硬件资源的最优
利用。采用Verilog语言完成了VLSI设计，并通过EDA软件给出仿真和综合结果。-AVS motion compensation circuit of VLSI Design and Implementation of a standard based on the AVS motion compensation circuit efficient hardware structure, the design used 8 X 8 block-level pipelining, the normalized motion vector processing and interpolation filter bank guarantee efficient operation of the pipeline, as well as the optimal use of hardware resources. Using Verilog language completed VLSI design and EDA software through simulation and synthesis results. Platform: |
Size: 216064 |
Author:sss |
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Description: 视频序列运动矢量分布的中心偏移特性在运动估计中发挥重要的作用，但忽视了运动矢量分布的方向性。该文提出了非对称双十字形搜索(UDCS)算法，给出了在搜索的初始阶段使用小十字搜索模型对小的运动矢量搜索并在相继的搜索过程中使用具有方向性的十字形搜索模型对大运动矢量进行搜索的步聚。介绍了该算法的实现结构，并分析了该算法搜索性能。-Video sequence of motion vector distribution characteristics of the center offset is estimated in sports play an important role, but ignored the direction of motion vector distribution. This paper presents asymmetric double cross search (UDCS) algorithm, given the initial stage in the search using small cross english model of small motion vector search and the search process have been using a directional cross english model of large motion vector search步聚. Introduce the realization of the algorithm structure, and analyze the search performance of the algorithm. Platform: |
Size: 182272 |
Author:宋恋 |
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Description: 文章比较了H．264和AVS两个标准在运动补偿中运动矢量预测算法的差别， 提出了一种实现H．264 中
主档次(main pmille)下的第4级别(1evel 4)和AVS中的基准档次面向高清应用时运动矢量预测复用的硬件结构。
提出了一种新颖的缓存管理更新机制．极限情况下用于运动矢量的片上缓存大小减少了75％ 。用FPGA验证结果
表明资源占用情况是单独实现AVS的2．3倍，是单独同时实现两个标准的70％。能实现对1080i 30Hz高清图像实
时解码。-Article compares the H. 264 and AVS standards in the two motion compensation algorithm in the motion vector prediction difference, a realization of H. 264 in the main level (main pmille) under section 4 level (1evel 4) and AVS in the benchmark grade of application-oriented high-definition motion vector prediction reuse the hardware structure. A novel cache management update mechanism. Limit used for motion vectors on-chip cache size reduction of 75. The results show that the use of FPGA resources to verify the occupancy of a separate AVS realize 2.3 times, both individually and at the same time realize the standard 70. Can realize high-definition images to 1080i 30Hz real-time decoding. Platform: |
Size: 275456 |
Author:宋恋 |
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Description: The problem of image registration subsumes a number of problems and techniques in multiframe
image analysis, including the computation of optic flow (general pixel-based motion), stereo
correspondence, structure from motion, and feature tracking. We present a new registration
algorithm based on spline representations of the displacement field which can be specialized to
solve all of the above mentioned problems. In particular, we show how to compute local flow,
global (parametric) flow, rigid flow resulting from camera egomotion, and multiframe versions of
the above problems. Using a spline-based description of the flow removes the need for overlapping
correlation windows, and produces an explicit measure of the correlation between adjacent flow
estimates. We demonstrate our algorithm on multiframe image registration and the recovery of 3D
projective scene geometry. We also provide results on a number of standard motion sequences. Platform: |
Size: 486400 |
Author:刘长乐 |
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Description: This library implements the KLT Tracking algorithm [2004] for Feature Tracking in Video useful in computer vision tasks like object recognition, image indexing, tracking and structure from motion. This implementation uses programmable Graphics Hardware to achieve considerable speedup in the running time of the GPU-based implementation. Platform: |
Size: 49152 |
Author:Alex |
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Description: This library implements the KLT Tracking algorithm [2004] for Feature Tracking in Video useful in computer vision tasks like object recognition, image indexing, tracking and structure from motion. This implementation uses programmable Graphics Hardware to achieve considerable speedup in the running time of the GPU-based implementation. Platform: |
Size: 69632 |
Author:Alex |
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Description: sba, a C/C++ package for generic sparse bundle adjustment is almost invariably used as the last step of every feature-based multiple view reconstruction vision algorithm to obtain optimal 3D structure and motion (i.e. camera matrix) parameter estimates. Provided with initial estimates, BA simultaneously refines motion and structure by minimizing the reprojection error between the observed and predicted image points. Platform: |
Size: 393216 |
Author:picab |
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Description: The studies of human body motion have been motivated by a large number of application domains: visual surveillance,clinical analysis, computer animation, athletic performance
analysis, robotics, and biometrics. Moreover, human motion analysis has many challenging issues, because the highly flexible structure and self-occlusion of the human body mandates complicated processes for the segmentation and
analysis of motion:The motion of the human
body may be defined by the movement of various body parts such as hand or limb segments. The human body consists of
several rigid parts connected by the joints, but the motion of a full human-body is non-rigid and articulated . Human gait (walking and running) is known to be one of the most universal and complex of all human activities. Platform: |
Size: 286720 |
Author:dijaben |
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Description: Bundler is a structure-from-motion system for unordered image
collections (for instance, images from the Internet). Bundler takes a
set of images, image features, and image matches as input, and
produces a 3D reconstruction of the camera and (sparse) scene geometry
as output. The system, described in [1] and [2], reconstructs the
scene incrementally, a few images at a time, using a modified version
of the Sparse Bundle Adjustment package of Lourakis and Argyros [3] as
the underlying optimization engine.
Currently, Bundler has been primarily compiled and tested under Linux
(though a Windows version for cygwin has also been released). Platform: |
Size: 5941248 |
Author:陳奕均 |
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Description: A structure an motion toolkit in Matlab
This document describes a set of Matlab functions for SAM (structure and motion recovery) its primary aim is to illustrate various methods developped over the past few years in this area-A structure an motion toolkit in Matlab
This document describes a set of Matlab functions for SAM (structure and motion recovery) its primary aim is to illustrate various methods developped over the past few years in this area Platform: |
Size: 2282496 |
Author:rauchdi |
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Description: 集束调整是指同时调整相机参数和物点坐标，使重投影误差取得最小值的优化过程，可用于三维重建-sba, a C/C++ package for generic sparse bundle adjustment is almost invariably used as the last step of every feature-based multiple view reconstruction vision algorithm to obtain optimal 3D structure and motion (i.e. camera matrix) parameter estimates. Provided with initial estimates, BA simultaneously refines motion and structure by minimizing the reprojection error between the observed and predicted image points. Platform: |
Size: 524288 |
Author:liulihong |
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Description: 用于对全景镜头进行标定，能求解出图像上对应点的世界坐标的方向向量-The OcamCalib Toolbox for Matlab allows the user (also inexpert users) to calibrate any central omnidirectional camera, that is, any panoramic camera having a single effective viewpoint (see section 17). The Toolbox implements the procedure initially described in the paper(Scaramuzza, D., Martinelli, A. and Siegwart, R., (2006). "A Flexible Technique for Accurate Omnidirectional Camera Calibration and Structure from Motion", Proceedings of IEEE International Conference of Vision Systems (ICVS 06), New York, January 5-7, 2006.) and later extended in (Scaramuzza, D., Martinelli, A. and Siegwart, R., (2006). "A Toolbox for Easy Calibrating Omnidirectional Cameras", Proceedings to IEEE International Conference on Intelligent Robots and Systems (IROS 2006), Beijing China, October 7-15, 2006.
). A detailed introduction to this model is in section 19 of this Tutorial. Furthermore, you can also see a demo of how the toolbox works here.
The Toolbox permits the user to easily and quickly cal Platform: |
Size: 5528576 |
Author:dony |
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Description: In this paper, in control theory, sliding mode control, or SMC, is a form of variable structure control (VSC). It is a nonlinear control method that alters the dynamics of a nonlinear system by application of a high-frequency switching control. The state-feedback control law is not a continuous function of time. Instead, it switches from one continuous structure to another based on the current position in the state space. Hence, sliding mode control is a variable structure control method. The multiple control structures are designed so that trajectories always move toward a switching condition, and so the ultimate trajectory will not exist entirely within one control structure. Instead, the ultimate trajectory will slide along the boundaries of the control structures. The motion of the system as Platform: |
Size: 201728 |
Author:deep |
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Description: 步态识别的一篇外文文献，非常好，对当前基于structure and motion 等作了非常详尽的介绍，其用的实验方法也非常好，对提高步态识别率非常有价值！-Gait recognition of a foreign language literature, very good, the current and based motion structure and so on for a very detailed introduction, and its experimental method is also very good, to improve the gait recognition rate is very valuable! Platform: |
Size: 253952 |
Author:pudn |
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Description: 基于两幅图像的相机移动计算。基于matlab中的视觉跟踪模块实现，使用matlab 2016b自带工具箱。可以当作slam课程的作业。包含实验的照片。以及用于相机标定的照片。-Camera movement is calculated based on the two images. Matlab-based visual tracking module, using matlab 2016b own toolbox. It can be used as job slam courses. Experiment containing photos. And a photo camera for calibration. Platform: |
Size: 3975168 |
Author:yinyan |
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Description: 光流是一种简单实用的图像运动的表达方式[1] ，通常定义为一个图像序列中的图像亮度模式的表观运动，即空间物体表面上的点的运动速度在视觉传感器的成像平面上的表达。这种定义认为光流只表示一种几何变化。1998年Negahdaripour将光流重新定义为动态图像的几何变化和辐射度变化的全面表示[2] 。光流的研究是利用图像序列中的像素强度数据的时域变化和相关性来确定各自像素位置的“运动”，即研究图像灰度在时间上的变化与景象中物体结构及其运动的关系。一般情况下，光流由相机运动、场景中目标运动或两者的共同运动产生的相对运动引起的。光流计算方法大致可分为三类：基于匹配的方法、频域的方法和梯度的方法。-Optical flow expression is a simple and practical image motion [1], is usually defined as the apparent motion of an image sequence image brightness mode, ie velocity of points on the surface of the object on the imaging plane space vision sensor expression. This definition is considered only optical flow shows a geometric variation. 1998 Negahdaripour will redefine optical flow motion picture geometry changes and radiometric variations comprehensive representation [2]. Optical flow study is the use of temporal changes in a sequence of images pixel intensity data and to determine the relevance of each pixel position of " movement" , that is, the relationship between research grayscale image at the time of the scene changes in the structure and motion of objects . In general, the optical flow by the camera motion, relative motion common target movement or motion scenes both produce caused. Optical flow calculation method can be broadly divided into three categories: matching meth Platform: |
Size: 16679936 |
Author:张聪 |
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Search - structure and motion