Gaze-based control of device operations
US-10535139-B1 · Jan 14, 2020 · US
Apparatus and method of remotely measuring size of pupil
US11798188B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11798188-B2 |
| Application number | US-202117622496-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 24, 2021 |
| Priority date | Mar 31, 2020 |
| Publication date | Oct 24, 2023 |
| Grant date | Oct 24, 2023 |
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- Title
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Abstract
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The present disclosure provides a method of remotely measuring a size of a pupil, including: acquiring an image of a to-be-measured person by using a detection device; acquiring an image of a pupil of the to-be-measured person from the image of the to-be-measured person; measuring a distance between the to-be-measured person and the detection device by using the detection device; and calculating an actual size of the pupil of the to-be-measured person based on the measured distance and the image of the pupil of the to-be-measured person. The present disclosure further provides an apparatus for remotely measuring a size of a pupil, an electronic device, and a non-transitory computer-readable medium.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of determining whether a person has taken drugs, comprising: acquiring an image of a person using a detection device; acquiring an image of a pupil of the person from the image of the person; measuring a distance between the person and the detection device using the detection device; calculating an actual size of the pupil of the person based on the measured distance and a size of pixels occupied by the image of the pupil of the person in the image of the person; measuring a body temperature of the person by using the detector; and determining whether the person has taken drugs based on the actual size of the pupil of the person and the body temperature of the person. 2. The method of claim 1 , wherein a ratio of the actual size of the pupil of the person to the size of pixels occupied by the image of the pupil of the person in the image of the person is proportional to the measured distance. 3. The method of claim 1 , wherein the image of the pupil is acquired by at least one of a plurality of cameras arranged in a first array in the detection device. 4. The method of claim 1 , wherein the distance between the person and the detection device is acquired by at least one of a plurality of distance measurement devices arranged in a second array in the detection device. 5. An electronic device, comprising: one or more processors; and a memory for storing one or more computer programs, wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method of claim 1 . 6. A non-transitory computer-readable storage medium having executable instructions stored thereon, wherein the instructions, when executed by a processor, cause the processor to implement the method of claim 1 .
Assignees
Inventors
Classifications
- G06T7/62Primary
of area, perimeter, diameter or volume · CPC title
Biomedical image inspection · CPC title
Determining position or orientation of objects or cameras (camera calibration G06T7/80) · CPC title
Determination of colour characteristics · CPC title
using pixel segmentation or colour matching · CPC title
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Frequently asked questions
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- What does patent US11798188B2 cover?
- The present disclosure provides a method of remotely measuring a size of a pupil, including: acquiring an image of a to-be-measured person by using a detection device; acquiring an image of a pupil of the to-be-measured person from the image of the to-be-measured person; measuring a distance between the to-be-measured person and the detection device by using the detection device; and calculatin…
- Who is the assignee on this patent?
- Univ Tsinghua, Nuctech Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G06T7/62. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Oct 24 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).