Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Face size determination method and device

A method and size determination technology, applied in the field of face size determination methods and devices, can solve problems such as low measurement accuracy of face size, and achieve the effects of avoiding manual measurement, simplifying measurement operation steps, and simplifying measurement operation.

Active Publication Date: 2021-06-01
BMCTIANJIN MEDICAL CO LTD
View PDF14 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The embodiment of the present invention provides a method and device for determining the size of a human face, which can accurately measure the size of the human face of the target to be measured, so as to solve the technical problem of low measurement accuracy of the human face size in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Face size determination method and device
  • Face size determination method and device
  • Face size determination method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] refer to image 3 , which shows a flow chart of Embodiment 1 of a method for determining the size of a human face according to the present invention, which may specifically include:

[0044] Step 301, collecting the first human face image to be tested of the target to be tested, wherein the first human face image to be tested includes the first human face to be tested and the circular reference object of the target to be tested;

[0045] Step 302, acquiring the first pixel value of the first face to be tested, and the second pixel value of the circular reference object;

[0046] Step 303, when the circularity of the circular reference object is greater than a preset circularity threshold, acquire the inclination angle of the circular reference object;

[0047] Step 304: Determine a first size of the first human face to be tested according to the first pixel value, the second pixel value, the inclination angle, and the actual size of the circular reference object.

[0...

Embodiment 2

[0079] refer to Figure 8 , which shows a flow chart of Embodiment 2 of a method for determining the size of a human face according to the present invention, which may specifically include:

[0080] Step 801, respectively collect the second human face image to be tested and the third human face image to be tested by the second image acquisition device, wherein the image acquisition distance of the second human face image to be tested is the same as that of the third human face to be tested The image acquisition distance of the face image is different;

[0081] Step 802, acquiring the second pixel value in the second human face image to be tested, and the third pixel value in the third human face image to be tested;

[0082] Step 803, according to the image acquisition distance difference between the second human face image to be tested and the third human face image to be tested, the focal length of the second image acquisition device, the second pixel value and the third pix...

Embodiment 3

[0109] refer to Figure 10 , which shows a flow chart of Embodiment 3 of a method for determining the size of a human face according to the present invention, which may specifically include:

[0110] Step 1001, using a third image acquisition device to acquire a fourth human face image of the target to be tested, wherein the image acquisition device includes at least two cameras;

[0111] Step 1002, obtain at least two groups of incident inclinations corresponding to the information collection points in the fourth face image to be tested, wherein the incident inclinations are obtained based on the third image acquisition device when the diffuse reflection of the information collection points illuminates at least two cameras of;

[0112] Step 1003, determine the position of the information collection point according to at least two groups of incident inclination angles and the camera distance between at least two cameras;

[0113] Step 1004: Determine the third size of the th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the invention provides a face size determination method and device, and the method comprises the steps: collecting a first to-be-detected face image of a to-be-detected target, and enabling the first to-be-detected face image to comprise a first to-be-detected face of the to-be-detected target and a circular reference object; acquiring a first pixel value of the first to-be-detected face and a second pixel value of the circular reference object; under the condition that the roundness of the circular reference object is greater than a preset roundness threshold value, acquiring an inclination angle of the circular reference object; and according to the first pixel value, the second pixel value, the inclination angle and the actual size of the circular reference object, determining the first size of the first to-be-detected face. According to the embodiment of the invention, the first size of the first to-be-measured face is determined according to the actual size and the inclination angle of the circular reference object and the pixel value in the first to-be-measured face image, so that the measurement operation steps in the prior art are simplified, and the accuracy of measuring the size of the face is improved.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a method and device for determining the size of a human face. Background technique [0002] The non-invasive positive pressure ventilation method has been widely used in obstructive sleep apnea syndrome (OSA for short), chronic obstructive pulmonary disease (COPD for short), etc. It does not require surgery to remove the tube Inserted into the patient's airway, the blower is used to deliver a continuous pressure ventilation (CPAP) or variable pressure ventilation, such as bilevel pressure or variable pressure ventilation that varies with the patient's breathing cycle Automatic pressure-regulating ventilation that varies with patient monitoring. Such pressure support therapy is also commonly used for conditions such as obstructive sleep hypopnea, Upper Airway Resistance Syndrome (UARS) or congestive heart failure. [0003] Non-invasive ventilation therapy involv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/166G06V40/161G06V40/171G06V10/255G06V10/243A61M16/0605A61M2230/00
Inventor 许坚王慧泉周明钊何垄庄志
Owner BMCTIANJIN MEDICAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com