Interactive digital stereoscopic sand table system

A sand table, three-dimensional technology, applied in the field of information display technology and human-computer interaction, can solve problems such as reducing comfort and visual fatigue, achieve fast operation, accurate spatial distribution, and solve massive data and operation efficiency.

Inactive Publication Date: 2014-09-17
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of technology not only reduces the comfort of people to experience 3D with the help of auxiliary tools such as polarizers, but also has great limitations in use and operation. In addition, this kind of technology will also cause the human eye to produce contradictory lens focal length adjustment and achieve convergence. Adjustment, long-term viewing will cause visual fatigue

Method used

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  • Interactive digital stereoscopic sand table system
  • Interactive digital stereoscopic sand table system
  • Interactive digital stereoscopic sand table system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] In the actual device, the gesture recognition device we use is Leap motion. The Leap motion sensor reconstructs the linkage information of the three-dimensional space of the palm in the real world based on the pictures captured by the two built-in cameras from different angles. The detection range is generally between 25 mm and 600 mm above the sensor, and the detection space is generally a square pyramid.

[0059] First, the Leap Motion sensor will establish a Cartesian coordinate system, the origin of the coordinates is the center of the sensor, and the X-axis of the coordinates is parallel to the sensor, pointing to the right of the screen. The Y axis points up. The direction of the Z axis away from the screen. Units are real world millimeters. During use, the Leap Motion sensor will periodically send linkage information about the hand, and each piece of information is called a "frame". Each such frame contains detected:

[0060] · List and information of all pa...

Embodiment 2

[0072] The actual finished product such as image 3 shown. The product is composed of 55-inch 3D LCD screen, three-dimensional gesture precise positioning components, gesture co-processor, electronic computer, configurable base, and integrated seamless design. Only the display screen is exposed, and the three-dimensional gesture precise positioning element and the gesture co-processor element (gesture detector) are hidden in the periphery of the display screen.

[0073] Such as image 3 As shown, when the user moves left and right in front of the display, the human eye tracking device will monitor the user's position in real time; at the same time, it will detect the operation posture of the user's hands. The user's eye position and gesture information are transmitted to the PC in real time, and the PC generates a pair of corresponding stereoscopic images in real time according to the user's viewing point and hand movements and displays them on the display screen. Since the...

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Abstract

An interactive digital stereoscopic sand table system is composed of a stereoscopic image generating system and a man-machine interactive system. Opengl and other 3D engines are adopted by the stereoscopic image generating system to draw the three-dimensional terrain, a human eye tracking and pointing light technology is applied, stereoscopic display without assistance is achieved, and a series of image accelerating technologies is adopted to accelerate the rendering process of an image. A three-dimensional building model is arranged in a three-dimensional terrain target area, and precise space distribution and the good visual effect are achieved. A naked eye stereoscopic displayer is formed by the stereoscopic image generating system. The man-machine interactive system controls the three-dimensional terrain scene or three-dimensional model data in the stereoscopic image generating system through gestures, and is achieved by presetting a gesture recognition interface. The corresponding gestures control the three-dimensional terrain scene or the three-dimensional model data in the stereoscopic image generating system to be enlarged or reduced or horizontally moved or rotated or to enter, and the corresponding gestures capable of distinguishing different control significances can be configured according to needs.

Description

technical field [0001] The invention relates to a technology for generating a free stereoscopic scene and human-computer interaction in a naked-eye manner, and belongs to the field of information display technology and human-computer interaction. Background technique [0002] The sand table is a tool to express various geographical environment information such as the three-dimensional distribution of the surface and the target state of the ground objects. The production of sand tables is usually based on topographic maps, aerial photos or on-site terrain, and a model is formed according to a certain proportional relationship. It has the characteristics of intuitive image, simple production, economical and practical. [0003] The traditional sand table is made of sand, war chess and other materials. The purchase speed is slow and the transportation is inconvenient. It is difficult to adapt to the needs of the contemporary and future information battlefield. The process is ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B25/00G06F3/01
Inventor 王元庆董辰辰李异同陆大伟马换
Owner NANJING UNIV
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