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The procedure of manually generating a 3D model of an object is very time consuming for a human operator. Next-best- view (NBV) planning is an important aspect for automation of this procedure in a robotic environment. We propose a surface-based NBV approach, which creates a triangle surface from a real-time data stream and determines viewpoints similar to human intuition. Thereby, the boundaries...
Recently, laser-based people-tracking systems have received increasing attention for their ability to localize human subjects precisely in crowded situations. However, in a real environment, there exist many kinds of moving objects other than people, and previous methods have focused only on humans. To design a more sophisticated system, it is necessary to distinguish humans from observed objects...
Many patients suffer from swallowing disorders (dysphagia). There are many treatments for these disorders, such as swallowing therapy, surgery, and dietary modification. In our study, we focuse on dietary modification, a common approach. Normally, the swallowing is affected by food bolus properties such as hardness, stickiness and rheological characteristics, and dietary modifications can prevent...
Innovation ability not only is national and the social rich vitality and the vigor condition, also is national and the social civilization level of development symbol, is one of national comprehensive national strength important symbolic. Sharpens student's innovation ability, the acceleration trained innovative talented person, has become the contemporary teaching worker's most important task. This...
Interactive robots are required to have minimal footprint on the shop floor and to be able to work in constrained areas while ensuring the safety of the humans. To this end, modeling of an unstructured environment including the humans is an indispensable part of the online control schemes deployed in such robots. In this regard, a new approach is proposed for generating an efficient model of the human...
This paper presents a model for solving collisions between humans and making them reach their destinations successfully. The proposed model is elaborated from motion capture data. We first adopt dynamic global planning to compute a shortest path to make the pedestrians to get to the other side of the road based on the principle of maximum convenience. In a second stage, we integrate a local collision...
In this paper, a new rapid 3D human modeling and animation method based on sketch and motion database is proposed. This method reconstruct 3D human ball B-Spline model from sketch and implement real-time animation using motion database. We firstly blend all parts of sketch to obtain a new sketch which can represent human by one stroke. Then we triangulate this new sketch and select some circum circle...
In this work we introduce a novel approach for robot grasp planning. The proposed method combines the benefits of programming by human demonstration for teaching appropriate grasps with those of automatic 3D shape segmentation for object recognition and semantic modeling. The work is motivated by important studies on human manipulation suggesting that when an object is perceived for grasping it is...
Three-dimensional model of patient's thorax with pectus excavatum have been reconstructed and numerical results have been obtained by nonlinear finite element method. Firstly, using the three-dimensional modeling function of both software Geomagic Studio and Mimics, three-dimensional model of patient's thorax with pectus excavatum was established, including collection of thorax data, generating point...
The consumption of food inside mouth involves various oral operations, such as first bite, chewing and mastication, transportation, bolus formation, swallowing, etc, which are essential procedures not only for the consumption and digestion of food, but also for the appreciation and pleasure of food texture and flavors. Despite continuous efforts made by scientists from food, psychology, physiology,...
We present a new method for evaluating user experience in interactions with virtual humans (VHs). We code the conversational errors made by the VH. These errors, in addition to the duration of the interaction and the numbers of statements made by the participant and the VH, provide objective, quantitative data about the virtual social interaction. We applied this method to a set of previously collected...
Motion platforms are advanced systems for driving simulators. Studies showed that these systems imitate the real driving behavior of cars very accurately. In low-cost driving simulators, most installations lack motion platforms and miss to simulate real motion forces. Their focus is on high-quality video and audio, or force feedback on steering wheels. We aim to substitute the real motion forces with...
With some exceptions, current robotic systems need to be explicitly commanded for interactive tasks with humans. This constraint leads to a reduction in robot-human system level capabilities due to a lack of common grounding, and in addition, the robotic systems are selfcontained with little or no “social” intelligence. A cognitive architecture embodies robotic behaviors and the logical analysis of...
This paper studies the basic thoughts and impacts of traditional non-contact algorithms of human body modeling. The algorithms of most existing modeling methods are multiple and complex, and in this paper they are mainly classified into three types according to the optical, geometry and topology character of human body they are based on. And some brief comparisons and analyses are given among the...
This paper presents an immersive Human-centric/built virtual work cell for analyzing complex situations dynamically. This environment is supported by a custom open architecture, is composed of objects of complementary nature reflecting the level of Human understanding. Furthermore, it is controlled by an intuitive 3D bimanual gestural interface using data gloves.
Segmentation of 3D cerebral vasculature is important for clinical diagnosis. However, many relevant thin vessels are not visible in 1.5T and 3T MRA. With the recent introduction of 7T MRA, images of higher resolution can be acquired, which contain much more thin vessels. We propose a fully automatic hybrid approach for segmenting vessels from 7T MRA images of the human cerebrovascular system. First,...
In order to create valid CAD (computer-aided design) model for planning orthopedic operations, rapid prototyping, designing of implants, etc., the accurate definition of geometry and topology of all regions of human tibia is essential. Therefore it is logical to base process of geometrical modeling of human tibia on its anatomical and morphological properties. This paper presents and compares the...
The layered structure of human heart is a challenging task for visualization. Conventional visualization method can hardly be used to provide satisfied rendering results due to the complex anatomical structure of human heart. In addition, it is very hard to find a balance between rendering the inner structure and the silhouettes of the heart. In this work we adopt the context-preserving volume rendering...
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