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104 results about "Digital entertainment" patented technology

Cooperative construction method for enhancing realistic table-tennis system based on real rackets

The invention relates to a cooperative construction method for enhancing a realistic table-tennis system based on real rackets. The method comprises the following steps of: detecting and tracking a real table-tennis racket by utilizing the color characteristics according to a video image acquired by the system; designing and realizing the virtual-real three-dimensional registration of a virtual scene and a real scene, mapping the virtual scene to a video image coordinate system of the real rackets, participator users and real environment; designing and realizing the collision detection between a virtual table-tennis ball and objects, such as the real rackets, a virtual table-tennis table, a virtual table-tennis net, and the like according to the motion information of the real rackets and confirming and representing the motion trajectory of the virtual table-tennis ball after collision; and providing a finite state machine and a message-processing mechanism, controlling the conversion of various states of the table-tennis system in the operation process and ensuring a plurality of users to have the same table-tennis motion experience. The cooperative construction method can be widely applied to the fields, such as interactive digital entertainment, sports research, training simulation, remote education and training, and the like.
Owner:BEIHANG UNIV

Binocular image and object contour-based virtual and actual sheltering treatment method

The invention relates to a binocular image and object contour-based virtual and actual sheltering treatment method, which comprises the following steps of: accurately calculating the regional contour of a real object by an interactive image segmentation algorithm, and taking the regional contour as the geometrical information of the real object; and according to the negatively-correlated relation between parallax and depth, estimating the parallax of a virtual object under a current visual angle, determining the relative depth information between the virtual object and the real object in a current scene, and hierarchically dividing the scene. The front-and-back sheltering relation between the virtual object and the real object is estimated and determined by using the relative depth information, the depth information is not required to be calculated in a pixel-by-pixel manner; and the virtual and actual sheltering treatment is achieved in a two-dimensional image space, whether the sheltering between the virtual object and the real object exists or not is judged, and corresponding treatment is carried out, so that the binocular image and object contour-based virtual and actual sheltering treatment method can be applicable to most sheltering circumstances and a better virtual and actual sheltering treatment effect is achieved. The binocular image and object contour-based virtual and actual sheltering treatment method can be widely applied to the spatial sheltering treatment of virtual reality systems, such as interactive digital entertainment, sports research and training simulation, distance education and training and the like.
Owner:BEIHANG UNIV

Digital virtual-real interaction system and digital virtual-real interaction method

The invention discloses a digital virtual-real interaction system and a digital virtual-real interaction method. The digital virtual-real interaction system comprises a gesture acquisition device, a processing device and a display device. The digital virtual-real interaction method includes the steps of (1) tracking and capturing motion track of user's fingertip acquired by a camera, (2) drawing a track curve on a display in real time or displaying or recording of the track of the user's fingertip through a touch screen, (3) extracting a profile formed by the motion track, detecting the shape of the profile and giving semantics, (4) building a three-dimensional model base and managing three-dimensional models in a graphics library according to the semantics, (5) retrieving the three-dimensional model base according to the semantics of the hand-drawing track of the user, loading the corresponding three-dimensional models and displaying a three-dimensional virtual environment, and (6) performing dynamic interaction among the user, the three-dimensional model and the virtual environment so as to realize digital virtual-real interaction. The digital virtual-real interaction system and the digital virtual-real interaction method are adaptable to application fields of digital entertainment, virtual design, virtual-real interaction, virtual teaching and the like.
Owner:QINGDAO UNIV OF SCI & TECH

Self-adaptation virtual and actual three-dimensional registration method based on multiple natural characteristics

InactiveCN102360504ARealize virtual and real three-dimensional registrationImprove tracking efficiencyImage analysisVideo sequenceSelf adaptive
The invention discloses a self-adaptation virtual and actual three-dimensional registration method based on multiple natural characteristics. The self-adaptation virtual and actual three-dimensional registration method comprises steps including that various natural characteristics are generated by means of analyzing video sequences of an actual scene, aggregations of the various natural characteristics are also generated, the states of the various natural characteristics are comprehensively analyzed, priority for virtual and actual three-dimensional registration of the various natural characteristics is obtained, a type of natural characteristics for virtual and actual three-dimensional registration is interactively selected according to the priority or by a user, then the various natural characteristics in the selected type of the natural characteristic aggregation are detected in the video sequences of the actual scene, the natural characteristics with high stability and/or distinctiveness is selected and used as natural characteristics for final registration, and finally, three-dimensional registration of a virtual object in the actual scene is carried out by the aid of the natural characteristics for final registration. The self-adaptation virtual and actual three-dimensional registration method can be widely applied to virtual and actual three-dimensional registration and fusion in virtual reality systems for interactive type digital entertainment, sports researches and training simulation, distance education and training and the like.
Owner:BEIHANG UNIV
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