Contact track fusion method of multiple hierarchical cameras on interactive surface

Abstract

The invention discloses a contact track fusion method of multiple hierarchical cameras on an interactive surface. The repeated identification of the contact track resulted from overlapped collection areas of the cameras and the discontinuous problem resulted from a cross-unit interactive surface in the interactive process are solved. The method comprises the following steps that: segment tracks extracted by a plurality of cooperative contact identification modules are fused to global unified tracks, namely, a plurality of lower unit fusion programs are used for receiving a segment identification result of a unit interactive surface, judging an overlapping relationship, and maintaining and updating a unit track; and an upper joining fusion program is responsible for maintaining global track information, taking the unit track obtained through lower unit fusion as input and judging a connection relationship to form a global track so as to provide integral and precise contact motion information for a large-format integrative desktop. The method disclosed by the invention has the advantages that: the method is efficient and accurate; distributive programs are operated and deployed flexibly; and the reliable method for realizing the large-format joined integrative desktop through the plurality of cameras is provided.

Description

technical field [0001] The invention belongs to the technical field of interactive unit splicing, and in particular relates to a method for merging contact tracks of hierarchical multi-cameras on an interactive surface. Background technique [0002] In the splicing mode of contact tracks, the existing implementation methods include the method of maintaining and changing the stroke attributes of cross-screen writing mentioned in the invention patent with the patent application number CN200910040278.0, and the invention patent with the patent application number CN200910039055.2 mentioned The main idea of ​​finding the point close to the seam and the drawing time of the line is to splice according to the start and end coordinates and time of the track at the seam. The basic principle of these methods is: a camera is placed at the bottom of the unit interaction surface, and the light emitted by the luminous pen will form a contact point and be photographed by the camera. The co...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies in the above-mentioned prior art, the object of the present invention is to provide a method for merging contact tracks of hierarchical multi-cameras on an interactive surface, which solves the problem of repeated recognition of contact tracks caused by overlapping camera acquisition areas during the interaction process. For the discontinuity problem caused by cross-unit interaction surfaces, the fragment trajectories extracted by multiple contact recognition modules working together are fused into a globally unified trajectory, that is, several lower-layer unit fusion programs receive the fragment recognition results of unit interaction surfaces, judge overlapping relations, and maintain Update the unit trajectory; an upper-level splicing and fusion program is responsible for maintaining the global trajectory information, and the unit trajectory obtained by the lower-level unit fusion is used as input to judge the connection relationship and further form the global trajectory, thereby providing complete and accurate contact movement information for large-format interactive desktops