ELECTRONIC BLACKBOARD SYSTEM AND PROGRAM

专利名称：ELECTRONIC BLACKBOARD SYSTEM AND

PROGRAM

发明人：MIYAZAKI Hiroshi申请号：EP11819811.8申请日：20110812公开号：EP2610718A1公开日：20130703

专利附图：

摘要：Provided is a technique of correcting influences of optical environment tocorrectly recognize the color of an input object used for inputting of coordinates, andenabling automatic designation of a color to be used for drawing. A coordinate detection

unit detects coordinates of an input object. Next, display light on the display plane in thevicinity of the coordinates is estimated from display data, and a correction value toremove influences of the display light is calculated. A captured image of an input objectused for input operations on the display plane is extracted, and the color of the capturedimage is corrected with a display light correction value. Thereby, influences of the displaylight added to the input object are removed, enabling the original color of the inputobject to be identified.

申请人：Hitachi Solutions, Ltd.

地址：4-12-7, Higashishinagawa Shinagawa-ku Tokyo 140-0002 JP

国籍：JP

代理机构：Liesegang, Eva

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