公开(公告)号：US20100103092A1

公开(公告)日：2010-04-29

申请号：US12379388

申请日：2009-02-20

Applicant: Chen-Chiung HSIEH ,  Ming-Ren TSAI ,  Dung-Hua LIOU

Inventor： Chen-Chiung HSIEH ,  Ming-Ren TSAI ,  Dung-Hua LIOU

IPC: G06F3/03

CPC classification number: G06K9/4685 ,  G06F3/017 ,  G06F3/0304 ,  G06F3/04883 ,  G06K9/00416 ,  G06K2209/01

Abstract: A video-based character input apparatus includes an image capturing unit, an image processing unit, a one-dimensional feature coding unit, a character database, a character recognizing unit, a display unit, and a stroke feature database. The image capturing unit captures an image. The image processing unit filters a moving track of a fingertip in the picture by detecting a graphic difference, then detecting a skin color and picking out a moving track most corresponding to a point of the object. The one-dimensional feature coding unit takes a stroke with respect to the moving track and converts the stroke into a coding sequence in a one-dimensional string according to a time sequence. The character recognizing unit proceeds with character comparison between the coding sequence in a one-dimensional string and the character database to find out a character having the most similarity for display one the display unit.

Abstract translation: 基于视频的字符输入装置包括图像拍摄单元，图像处理单元，一维特征编码单元，字符数据库，字符识别单元，显示单元和笔画特征数据库。 图像捕获单元捕获图像。 图像处理单元通过检测图形差异来对图像中的指尖的移动轨迹进行滤波，然后检测皮肤颜色并挑选最对应于物体的点的移动轨迹。 一维特征编码单元相对于移动轨迹进行笔划，并根据时间顺序将笔划转换为一维字符串中的编码序列。 字符识别单元进行一维字符串中的编码序列与字符数据库之间的字符比较，以找出具有最相似性的字符，以显示一个显示单元。