The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Huge computational complexity of encoding multiview color video is one of the main challenges of putting 3D video systems into practical use. A fast encoding algorithm is proposed in this paper. The proposed algorithm combines a fast macroblock mode selection method and a fast prediction direction determination method. The fast macroblock mode selection method utilizes the macroblock modes of the...
The purpose of this paper is to explore three-dimensional (3D) visualization methods of flow unit in oil block. Using the theory and methods of petroleum geology, reservoir sedimentology, mathematical geology, computer graphics, through analyzing special blocks of oil field and block division into small layers, the physical parameters of reservoir were studied about the regularity of their inherent...
The paper first outlined the Java3D technology in three-dimensional model of interactive design applications. Proposed the use of Java3D virtual three-dimensional model for the description of the client to read through the remote server customers to upload three-dimensional graphics data, user interaction with the virtual three-dimensional interactive modeling program, using the procedure of drawing...
With the development of 3DTV, the conversion of existing 2D videos to 3D videos becomes an important component of 3D content production. One of the key steps in 2D to 3D conversion is how to generate a dense depth map. In this paper, we propose a novel depth extraction method based on motion and geometric information for 2D to 3D conversion, which consists of two major depth extraction modules, the...
This paper addresses the problem of terrain reconstruction for autonomous navigation. Dense stereo matching based terrain reconstruction methods are sensitive to mismatch pixels in disparity map, and consume lots of computation on pixels in uninterested regions. Traditional sample point pre-selection methods (SPPS) are effective, but they can only obtain sparse terrain map for grid-based representation...
In 3D measurement of complex deep-hole inner profile with ring-structured-light, the effective area of the original images is an annular zone, only a small portion of the whole. A new image compression storage method has been proposed, where only the image information of the effective annular zone, denoted by T, is stored. The method consists of the following procedures. Find the center and the inner/outer...
The main objective of this study is to develop an implemented system based on MapGIS for managing and visualizing urban geology information, such as borehole, remote sensing (RS) data, geophysical and geochemical data-in Shanghai City. More than 20,000 boreholes, 80G byte RS data and other geological data were managed with three levels in the system. For the convenience of sharing information and...
In this paper, an approach of kinetic parameter estimation and real-time pose tracking for 3D moving objects is investigated. The main work includes two folds: firstly, an extended Kalman filter (EKF) is designed to estimate the kinetic parameter with a hybrid eye to hand/eye in hand multi-camera vision system. Secondly, a scheme of dynamic feature selection is proposed. One of the main innovations...
Neckline, wristband and pantalets are key parts of 3D garment models. The extraction and editing on these boundaries play an important role in 3D garment fitting application. This paper firstly extracts boundary points, uses the non-uniform B-spine curve of degree three to interpolate them and calculates the length of each boundary. Then we add new spatial points by constructing the parallel tangent...
In this article based on databases of 3D female bodies emulator, 3D jacket emulator, textile material parameters, historical photos and pattern parameters, an automatic pattern making and its 3D emulator model support system of woman warm jacket was developed. In this system different databases were set up and mathematic models of body block and pattern were founded, which they were the main algorithms...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.