نتایج جستجو برای: 3d seam modelling
تعداد نتایج: 347172 فیلتر نتایج به سال:
Most 3D modelling software have been developed for conventional 2D displays, and as such, lack support for true depth perception. This contributes to making polygonal 3D modelling tasks challenging, particularly when models are complex and consist of a large number of overlapping components (e.g. vertices, edges) and objects (i.e. parts). Research has shown that users of 3D modelling software o...
In the past few years the number of applications that use 3D information of topographical objects increased rapidly. With the growing demand for 3D topographic data the need for automated 3D data acquisition also grows. Height information can be extracted from airborne or terrestrial acquisition methods, but can also be modelled as implicit semantic information. Adding height information to exi...
A conical intersection seam is behind the restriction of intramolecular rotation mechanism for aggregation induced emission in diphenyl dibenzofulvene (DPDBF). In solution, the seam is accessed through rotation around the exocyclic fulvene bond, leading to radiationless decay to the ground state. In the solid, the seam cannot be accessed because the torsion is blocked, and DPDBF becomes emissive.
The paper aims to demonstrate the importance of behavioural issues in environmental modelling. These issues can relate both to the modeler and to the modelling process including the social interaction in the modelling team. The origins of behavioural effects can be in the cognitive and motivational biases or in the social systems created as well as in the visual and verbal communication strateg...
The need for more intuitive, faster and more effective tools for freeform product design is still an outstanding research issue in shape modeling. We propose a new methodology in which the designer can define optimal shape modification tools for the situation at hand. The key to this method is a dialogue between the designer and the computer, in which the details of the requested shape modifier...
Room-and-pillar mining with pillar recovery has historically been associated with more than 25% of all ground fall fatalities in underground coal mines in the United States. The risk of ground falls during pillar recovery increases in multiple-seam mining conditions. The hazards associated with pillar recovery in multiple-seam mining include roof cutters, roof falls, rib rolls, coal outbursts, ...
This paper presents an evaluation method for behavioral credibility in multi-agent simulation. This method is based on the automatic clusters extraction of behaviors in a participatory simu-
Most 3D modelling tools available today operate using interfaces based on traditional static menus, which implies that the user must go through a long training period before he can use the modelling tool in a productive manner. In this paper we explore the definition and use of new embodied modelling tools within a 3D environment. Each embodied tool works in its own virtual 2D space that senses...
When a video is displayed on a smaller screen than originally intended, some of the information in the video is necessarily lost. In this paper, we introduce Video Retargeting that adapts video to better suit the target display, minimizing the important information lost. We can remove uninteresting part from video like image with some important modifications to retarget it using seam carving. I...
Due to the limitations of welding complexity and machining error, traditional manual teaching offline programming are not intelligent enough have weak adaptability workpiece. At present, 2D perception visual guidance method is commonly used which cannot accurately locate model complicated 3D spatial curve seam. The can hardly meet requirements process. In this paper, a seam based on line struct...
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