A 3D Mesh Model-Based Ultrasonic In-Air Tactile Rendering Method
A 3D grid and tactile rendering technology, applied in the field of human-computer interaction, can solve the problems that the ultrasonic tactile description method of virtual 3D objects has not mentioned, and achieve the effects of refining the tactile sensation of the hand, improving the recognition rate, and improving the realism
Active Publication Date: 2022-05-10
JILIN UNIV
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However, on the basis of this method, the specific application of this method has yet to be explored, such as how to complete the tactile description of virtual three-dimensional objects by controlling the ultrasonic focus point, and the specific ultrasonic tactile description method for virtual three-dimensional objects has not yet been proposed. and
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[0042] Include the following steps:
[0043] (1) Use the 3D mesh model processing software, load the corresponding 3D graphics, select the triangular mesh model, and select the mesh densification and simplification;
[0044] (2) For the determined mesh model, obtain the three-dimensional coordinates of all its mesh vertices;
[0045] (3) Import the obtained three-dimensional coordinates into the scene, enable gesture recognition, obtain the coordinates of each joint of the fingers of the model hand, the coordinates of the center of the palm, and the normal vector of the palm plane, and calculate and determine through the coordinates of the center of the palm and the normal vector of the palm plane. palm plane equation S;
[0046] (4) Determine the position of the ultrasonic focusing point of the finger part, calculate the distance between the finger joint part and the grid vertex, and determine the coordinates of the grid vertex at the finger joint point through the numerical...
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The invention relates to an ultrasonic aerial tactile rendering method based on a three-dimensional grid model, belonging to the fields of human-computer interaction and virtual reality. The method of mesh model is used to complete the positioning of the ultrasonic focus point of the hand and the description of the local features of the 3D graphics. The mesh vertex of the 3D model obtains the 3D coordinates through a specific software. According to the finger joint coordinates and the palm plane and the 3D graphics mesh vertex The distance information is obtained, the positioning of the ultrasonic focusing point of the hand is completed, and the edges and vertices of the three-dimensional graphics are focused with different intensities and frequencies to complete the rendering of the local features of the three-dimensional graphics. The advantage is that the hand is divided into two parts, the fingers and the palm, and ultrasonic focusing is carried out respectively. Different intensities and frequencies are used for ultrasonic focusing on the edges and vertices of the three-dimensional graphics, so as to complete the rendering of the local features of the three-dimensional graphics and improve the user's understanding of the three-dimensional graphics. The recognition rate of graphics further improves the authenticity of 3D graphics.
Description
technical field [0001] The invention belongs to the fields of human-computer interaction and virtual reality, and in particular relates to an ultrasonic aerial tactile rendering method based on a three-dimensional mesh model, which can complete the rendering of three-dimensional graphics through ultrasonic tactile sensation and improve the authenticity of the three-dimensional graphics. Background technique [0002] With the development of human-computer interaction technology, various human-centered efficient and natural human-computer interaction methods have appeared one after another. At the same time, various sensory feedbacks in the process of human-computer interaction have also developed. [0003] In the process of human-computer interaction, users often need to use various perceptual feedback to guide the operation or enhance the user experience, such as: when using the software for the first time, use text or language to guide; when playing games, use vibration and ...
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IPC IPC(8): G06T19/00G06T17/00
CPCG06T19/006G06T17/00
Inventor 陈建王知强孙晓颖林琳燕学智于帆王庆龙
Owner JILIN UNIV