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3D object matching from cluttered scences is a great project. In order to reduce computational complexity, local feature must be extracted from a small number of keypoints with rich feature. In this paper, we present an algorithm for 3D object matching based on local feature combined with color. Keypoints should be detected first, and then calculate the quality for each keypoint, we choice these high...
In this paper, a marker less 3D hand tracking system for monocular RGB video is presented. We propose a novel two-level approach to efficiently grasp the personal characteristics and high varieties of hand postures. Our system first searches the approximate nearest neighbors in a small personalized real-hand image set, and retrieves more details from a large synthetic 3D hand posture database. Temporal...
Considering the weaknesses in the current higher vocational school (HVS) electrical engineering experiment course, we put forward a scheme for building the Web-based virtual experiment system. In this paper, we illustrate the design plan and structure of the electrical engineering virtual experiment system, as well as expose the key technology, where both 3DsMax and Virtools are employed to build...
Multi-domain VR simulation systems provide a framework to bring together various modules in order to achieve the desired goals. Due to different data structure needs regarding rendering and simulation tasks, common systems typically focus on one of these areas. In complex technical or mechatronical systems like mobile robotic applications, rendering capabilities are mostly neglected. Hence, the used...
While single-view human action recognition has attracted considerable research study in the last three decades, multi-view action recognition is, still, a less exploited field. This paper provides a comprehensive survey of multi-view human action recognition approaches. The approaches are reviewed following an application-based categorization: methods are categorized based on their ability to operate...
Thanks to rapid development of Virtual Reality technologies, the research is not only limited in military training and scientific visualization realm, it has been expanded into more multidisciplinary areas, such as education, archaeology, conservation of culture heritage, etc. Many heritage objects can be found in museum, among them, historical mock-up represents a city with its precious historical...
In this paper, we describe a novel 3D shape retrieval method based on new features. The features are extracted for 3D points based on a 2D attribute space which consists of two bidirectional 3D shape attributes, one of which along the shape surface direction and the other along the shape content direction perpendicular to the former. We define this features as Point Bidirectional Features (PBFs),...
To improve the speed and accuracy of case retrieval of spade punch planter for digital design, this paper analyzed the design process of spade punch planter, proposed a method to design knowledge representation based on object oriented theory, and elaborated the construction methods of knowledge and resource database which include multi-level case database, knowledge rules database based on association...
One of the major challenges encountered by face recognition lies in the difficulty of handling arbitrary poses variations. While different approaches have been developed for face recognition across pose variations, many methods either require manual landmark annotations or assume the face poses to be known. These constraints prevent many face recognition systems from working automatically. In this...
The first competition on music scores that was organized at ICDAR in 2011 awoke the interest of researchers, who participated both at staff removal and writer identification tasks. In this second edition, we focus on the staff removal task and simulate a real case scenario: old music scores. For this purpose, we have generated a new set of images using two kinds of degradations: local noise and 3D...
Simulation training system can improve the trainer's ability, a rapid response and safety operating capability in the operation of real ship, to reduce operation accident of sailing. Intelligent examination scoring system uses the professional theory and practical experience as the evaluation criteria, and analyzes the operator's operation process to realize the automatic scoring through the program...
Caricatures are models of persons or things in which certain striking characteristics are exaggerated in order to create a comic or grotesque effect. This paper is concerned with a strategy for automatically generating caricatures of threedimensional models based on anthropometric measures and geometric manipulations by influence zones. In the proposed strategy, measures from a reference model serve...
In this paper, we propose a novel method for detecting and tracking landmark facial features on purely geometric 3D and 4D range models. Our proposed method involves fitting a new multi-frame constrained 3D temporal deformable shape model (TDSM) to range data sequences. We consider this a temporal based deformable model as we concatenate consecutive deformable shape models into a single model driven...
With the rapid development of the virtual reality technology, shortcomings of the conventional real equipments maintenance training can be remedied by adopting virtual maintenance training technology. This paper reviews the significance and development status of virtual maintenance based on virtual reality technology, including the basic functions and module design of equipments virtual maintenance...
The relief models made by the common modeling software are difficult to be consistent with the digital terrain model (DTM) and cannot fully express their morphological characteristics (such as the form, the structure, the spatial distributions and so on). In view of the above question, this paper advances an automatic modeling method of 3D relief symbols with building-up style. A component library...
In this paper, we present a novel method for activity analysis in outdoor environment. Difficulties, such as low resolution, shadows, long distances, and segmentation problems, usually exist in outdoor environment. To deal with these difficulties, the activity width sequence image which maintains 3D features using 2D representation is exploited to represent the silhouette structure information of...
Modern airborne or satellite SAR radar systems provide geometric resolution below ten centimeters. By SAR interferometry from pairs of such images, DEM image can be obtained. Using data of this kind it is possible to build a simple 3D models of remote objects. Similarity measurement between model of unknown object and known database models can be used for classification and recognition. In this paper...
This paper presents a version control method on multi-data objects from multi-devices. As various types of devices are widely used these days, most people use more than one kind of personal devices. Data are copied in multiple devices. However, it is hard to maintain consistency of the data in different devices and they are usually in different versions. In order to keep versions of multiple data...
3D Based Distributed Interactive Simulation (3DDIS) for Simulation of Virtual Battlefield Environment (VBE) is attracting more and more attention from both academic and industrial communities. With fast development of network technology, 3DDIS has shown unique advantages and broad applications comparing with the traditional simulation technology. A 3DDIS platform was proposed in this work for military...
Facial expression is central to human experience. Its efficient and valid measurement is a challenge that automated facial image analysis seeks to address. Most publically available databases are limited to 2D static images or video of posed facial behavior. Because posed and un-posed (aka “spontaneous”) facial expressions differ along several dimensions including complexity and timing, well-annotated...
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