複合現実感のための同系色ツートンカラーマーカにおけるID符号体系と誤り検出・訂正(<特集>複合現実感5)

概要

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This paper describes an ID assignment and error detection/correction method for Two-tone similar colored markers, which we have proposed for geometric registration method on mixed reality. We assume that these markers' color are similar to that of the background object to make them unimposing. However, there are trade-off between robustness and inconspicuousness. In general, any image recognition method cannot avoid recognition errors caused by external factors. Therefore, our proposed markers occasionally get not enough identification result by these reasons. To solve this problem, we have developed an ID assignment and recognition error detection/correction method. First, we clarified the total number of IDs for marker-units that consist of some small markers. We formulated single marker-unit system, in which we attach importance to the total number of IDs, and composite marker-unit system, in which we attach importance to the robustness. Secondly, we developed a recognition error detection/correction method. Basic idea is that the system assigns some numerical value to each small marker and judges the difference between the sum of the assigned value and previously given check digit. The level of recognition error detection and correction can be adjustable based on the mapping between the numerical value and each small marker.
2011-06-30