Intelligent device and its application for automatically identifying the position of the reading material in the reading and writing scene

Abstract

An intelligent device and its application that can automatically and accurately judge whether the reading and writing posture of the adolescent is correct or not without any contact with the adolescent's body in the reading and writing scene of the adolescent. It is composed of at least one two-dimensional or three-dimensional image sensor, a microprocessor connected with the image sensor, an alarm module and a power supply module. It can effectively obtain the posture and posture of young people when reading and writing, and give prompts to incorrect posture or posture. It has the following advantages: 1) Non-contact, no need to wear on the body, no physical burden. 2) It can accurately measure the distance from the human eye to the book. 3) It can be installed within 1 to 3 meters in front of the reader, with a large measurement range and no calibration required. 4) The algorithm can track and measure based on the three-dimensional coordinates of the face, and the unintentional shaking of the head and shoulders during reading and writing will not affect the measurement accuracy.

Description

technical field

[0001] The invention relates to a reminder device for automatically judging whether the posture of teenagers is correct when reading and writing, and in particular to an early warning device for intelligently recognizing the posture of teenagers in reading and writing through image information collected by a two-dimensional or three-dimensional image sensor. Background technique

[0002] There are more than 300 million people with myopia in my country, accounting for 33% of the world's myopia, far higher than the world average of 22%. There will be 1.35 million low-vision patients in our country every year, that is, three low-vision patients will appear every minute. If effective measures are not taken, by 2020 the number of visually disabled people in my country will quadruple the current number. The annual cost of visual impairment worldwide is as high as 25 billion US dollars. To sum up, visual impairment has become a serious public health problem in my ...

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