Reminding method and reminding device
First Claim
1. A method performed by a system comprising a processor, comprising:
- casting a light spot having a pattern to a fundus of an eye of a user;
collecting at least one image comprising a patterned image, corresponding to the pattern, as presented by the fundus;
adjusting a first focal length of an adjustable lens on an optical path between the eye of the user and an image collection device, and a first distance from an equivalent lens for the eye to the adjustable lens to collect a clearest image of the patterned image corresponding to the pattern and presented by the fundus, wherein the light spot forms a virtual image through the adjustable lens;
in response to the clearest image being collected, determining a focusing point position according to the first focal length of the adjustable lens, the first distance from the equivalent lens to the adjustable lens, a second focal length of the equivalent lens, a second distance between the patterned image presented by the fundus and the equivalent lens, an optical distance between the light spot and the adjustable lens, and a third distance between the virtual image and the adjustable lens; and
obtaining at least one monitoring parameter according to the focusing point position, the at least one monitoring parameter comprising at least one of;
a first angle between a current sightline of the user and a specific direction, ora second angle between the current sightline of the user and a normal which is on a viewed object and passes through the focusing point position.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed are an alert method and apparatus, and the present application relates to the field of intelligent alert technologies. The method comprising: detecting a focusing point position of a sightline of a user; and alerting the user according to the focusing point position and a state of the user. For the method and apparatus in the embodiments of the present application, a focusing point position of a sightline of a user can be detected precisely, and the user can be alerted accurately according to the focusing point position, so that the application range of the method and apparatus is relatively wide. In addition, according to a state of a user, user data, and the like, a monitoring parameter is selected and an alert threshold is set, so that the user can be properly alerted in a more targeted manner.
114 Citations
28 Claims
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1. A method performed by a system comprising a processor, comprising:
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casting a light spot having a pattern to a fundus of an eye of a user; collecting at least one image comprising a patterned image, corresponding to the pattern, as presented by the fundus; adjusting a first focal length of an adjustable lens on an optical path between the eye of the user and an image collection device, and a first distance from an equivalent lens for the eye to the adjustable lens to collect a clearest image of the patterned image corresponding to the pattern and presented by the fundus, wherein the light spot forms a virtual image through the adjustable lens; in response to the clearest image being collected, determining a focusing point position according to the first focal length of the adjustable lens, the first distance from the equivalent lens to the adjustable lens, a second focal length of the equivalent lens, a second distance between the patterned image presented by the fundus and the equivalent lens, an optical distance between the light spot and the adjustable lens, and a third distance between the virtual image and the adjustable lens; and obtaining at least one monitoring parameter according to the focusing point position, the at least one monitoring parameter comprising at least one of; a first angle between a current sightline of the user and a specific direction, or a second angle between the current sightline of the user and a normal which is on a viewed object and passes through the focusing point position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus, comprising:
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a memory that stores executable modules; and a processor, coupled to the memory, that executes the executable modules to perform operations of the apparatus, the executable modules comprising; a detection module configured to detect a focusing point position of a current sightline of a user, wherein the detection module is communicatively coupled to; a casting device configured to cast a light spot having a pattern to a fundus of an eye of the user; an image collection device configured to collect at least one image comprising a patterned image representing the pattern as presented by the fundus of the eye of the user; an adjustable imaging device configured to adjust a first focal length of an adjustable lens on an optical path between the eye of the user and the image collection device, and a first distance from an equivalent lens for the eye to the adjustable lens, wherein the image collection device collects a clearest image of the patterned image and the light spot forms a virtual image through the adjustable lens; and an image processing device configured to obtain, in response to the clearest image being collected, a focusing point position through calculation according to the first focal length of the adjustable lens, the first distance from the equivalent lens to the adjustable lens, a second focal length of the equivalent lens, a second distance between the patterned image presented by the fundus and the equivalent lens, an optical distance between the light spot and the adjustable lens, and a third distance between the virtual image and the adjustable lens; and an alert module configured to obtain at least one monitoring parameter according to the focusing point position, the at least one monitoring parameter comprising at least one of; a first angle between the current sightline of the user and a specified direction, or a second angle between the current sightline of the user and a normal which is on a viewed object and passes through the focusing point position, and alert the user according to the at least one monitoring parameter and a state of the user. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A computer readable storage device comprising executable instructions that, in response to execution, cause a system comprising a processor to perform operations, comprising:
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determining a focusing point position of a current sightline determined for at least one eye of a user, wherein the focusing point position is determined by; casting a light spot having a pattern to a fundus of the user; collecting at least one image comprising a representation of the pattern as presented by the fundus of the user; adjusting a first focal length of an adjustable lens on an optical path between an eye of the at least one eye of the user and an image collection device, and a first distance from an equivalent lens for the eye to the adjustable lens to collect a clearest image of the at least one image, wherein the clearest image corresponds to a clearest representation of the pattern as presented by the fundus of the user, and wherein the light spot forms a virtual image through the adjustable lens; obtaining at least one monitoring parameter according to the focusing point position, the monitoring parameter comprising at least one of; a first angle between the current sightline of the user and a specific direction, or a second angle between the current sightline of the user and a normal which is on a viewed object and passes through the focusing point position, and computing, in response to the clearest image being collected, the focusing point position based on the first focal length of the adjustable lens, the first distance from the equivalent lens to the adjustable lens, a second focal length of the equivalent lens, a second distance between the pattern presented by the fundus and the equivalent lens, an optical distance between the light spot and the adjustable lens, and a third distance between the virtual image and the adjustable lens; and outputting an alert to the user according to the at least one monitoring parameter and a state of the user. - View Dependent Claims (23, 24, 25)
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26. An apparatus, comprising:
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a first device for determining a focusing point position of a current sightline of an eye of a user, wherein, the focusing point position is determined by; casting a light spot having a pattern to a fundus of the user; collecting at least one image comprising a representation of the pattern as presented by the fundus of the user; adjusting a first focal length of an adjustable lens on an optical path between an eye of the at least one eye of the user and an image collection device, and a first distance from an equivalent lens for the eye to the adjustable lens to collect a clearest image of the at least one image, wherein the clearest image corresponds to a clearest representation of the pattern as presented by the fundus of the user, and the light spot forms a virtual image through the adjustable lens; computing, in response to the clearest image being collected, a focusing point position based on the first focal length of the adjustable lens, the first distance from the equivalent lens to the adjustable lens, a second focal length of the equivalent lens, a second distance between the pattern as presented by the fundus and the equivalent lens, an optical distance between the light spot and the adjustable lens, and a third distance between the virtual image and the adjustable lens, and obtaining at least one monitoring parameter according to the focusing point position, the monitoring parameter comprising at least one of; a first angle between the current sightline of the user and a specified direction, or a second angle between the current sightline of the user and a normal which is on a viewed object and passes through the focusing point position; and a second device for outputting an alert to the user according to the at least one monitoring parameter, the focusing point position, and a state of the user. - View Dependent Claims (27, 28)
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Specification