公开(公告)号：US11423700B2

公开(公告)日：2022-08-23

申请号：US17021827

申请日：2020-09-15

Applicant: BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD.

Inventor： Minqiang Chang ,  Huan Ye ,  Xiang Xu ,  Zhe Peng ,  Guanbo Bao

IPC: G06K9/00 ,  G06V40/20 ,  G06T7/246 ,  G06K9/62 ,  G06V10/44 ,  G06V30/28

Abstract: A method, an apparatus, a device and a computer-readable storage medium for recognizing aerial handwriting are provided. The method may include detecting a palm region of a user in a two-dimensional grayscale image; detecting a fingertip in the two-dimensional gray-scale image based on the palm area; determining a spatial trajectory of the fingertip based on a set of two-dimensional gray-scale images, the set of two-dimensional gray-scale images including the two-dimensional gray-scale image; and recognizing handwritten content of the user based on the spatial trajectory. A two-dimensional gray-scale image is used to recognize and track the spatial trajectory of the fingertip, which may speed up aerial handwriting recognition, and has low processing performance requirements for the device, while also ensuring high accuracy.