DRAWING IMAGE ERASING METHOD

PROBLEM TO BE SOLVED: To provide a drawing image erasing method with which the number of points in a coordinate row on which a series of erasing processing is performed is reduced with simple processing, and a time required for the erasing processing of a drawing image can be reduced without changin...

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Bibliographic Details
Main Author MATSUDA YUKIO
Format Patent
LanguageEnglish
Japanese
Published 30.05.2016
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To provide a drawing image erasing method with which the number of points in a coordinate row on which a series of erasing processing is performed is reduced with simple processing, and a time required for the erasing processing of a drawing image can be reduced without changing the shape of a stroke to perform the erasing processing.SOLUTION: There is provided an electronic blackboard (100) employing a drawing image erasing method of erasing a part or all of a drawing image (113) drawn with a pen (112) on a display (101) along sampling points in a coordinate row resulting from a series of erasing processing and obtained by performing sampling of coordinates moving on the basis of time series during a drawing image erasing operation with the pen (112) set to function as an eraser, the electric blackboard has a control part (103) including a display control part (104), input receiving part (105), pen processing part (106), eraser processing part (107), and input point filtering determination part (108).SELECTED DRAWING: Figure 3 【課題】簡単な処理により、一連の消去処理を行う座標列の点数を削減して、消去処理を行うストロールの形状を変化させることなく、描画像の消去処理にかかる時間を短縮することができる描画像消去方法を提供する。【解決手段】ディスプレイ（１０１）中にペン（１１２）により描画された描画像（１１３）の一部または全てを消しゴムとして機能するように設定されたペン（１１２）による描画像消去操作時に時系列に基づいて移動する座標のサンプリングを行って得られる一連の消去操作による座標列の標本点に沿って消去する描画像消去方法が採用された電子黒板（１００）において、制御部（１０３）の構成として、表示制御部（１０４）、入力受付部（１０５）、ペン処理部（１０６）、消しゴム処理部（１０７）を備え、さらに、入力点フィルタリング判定部（１０８）を備えることを特徴とする。【選択図】図３
Bibliography:Application Number: JP20140237866