Title:
CURSOR POSITIONING METHOD, INTERACTIVE PROJECTING DEVICE AND EDUCATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/125501
Kind Code:
A1
Abstract:
A cursor positioning method, an interactive projecting device and an education system, the method comprising: acquiring a filtered projected image, and converting the projected image into a grayscale image (S101); using pixel points in the grayscale image grayscale values of which are not greater than a first preset grayscale threshold as non-target pixel points (S103); counting the average value of the grayscale values of all of the non-target pixel points, and according to a preset mapping relationship, using a mapping value of the average value as a second grayscale threshold (S104); if the shape of a zone covered by pixel points in the grayscale image grayscale values of which are not less than the second grayscale threshold is a preset shape, using the zone as a target object (S105); and according to the coordinate mapping relationship between a preset projected image and a terminal display screen, calculating coordinates in the terminal display screen that correspond to the coordinates of a pixel point in the target object in the grayscale image and using said coordinates as the coordinates of a cursor in the terminal display screen (S106), thereby determining the location of the cursor in the terminal display screen according to the location of the target object, which a user projects on the projected image, on the projected image, thereby receiving and analyzing data fed back by the user.
Inventors:
GAO XIANGYANG (CN)
CHENG JUN (CN)
GUO HAIGUANG (CN)
CHENG JUN (CN)
GUO HAIGUANG (CN)
Application Number:
PCT/CN2019/124361
Publication Date:
June 25, 2020
Filing Date:
December 10, 2019
Export Citation:
Assignee:
SHENZHEN INST OF ADV TECH CAS (CN)
International Classes:
G06F3/0481
Foreign References:
| CN109814770A | 2019-05-28 | |||
| CN106911921A | 2017-06-30 | |||
| CN108288276A | 2018-07-17 | |||
| CN102622108A | 2012-08-01 | |||
| CN102945091A | 2013-02-27 | |||
| US20130044146A1 | 2013-02-21 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI UNION INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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