MX2015017426A - Process for measuring the actual size of an oject using a camera of a mobile terminal configured with a fix focal distance. - Google Patents

Process for measuring the actual size of an oject using a camera of a mobile terminal configured with a fix focal distance.

Info

Publication number
MX2015017426A
MX2015017426A MX2015017426A MX2015017426A MX2015017426A MX 2015017426 A MX2015017426 A MX 2015017426A MX 2015017426 A MX2015017426 A MX 2015017426A MX 2015017426 A MX2015017426 A MX 2015017426A MX 2015017426 A MX2015017426 A MX 2015017426A
Authority
MX
Mexico
Prior art keywords
mobile terminal
camera
focal distance
actual size
image
Prior art date
Application number
MX2015017426A
Other languages
Spanish (es)
Inventor
Magdalena MENA ARELLANOS Martha
Alberto LARA ALVAREZ Carlos
Original Assignee
Magdalena MENA ARELLANOS Martha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Magdalena MENA ARELLANOS Martha filed Critical Magdalena MENA ARELLANOS Martha
Priority to MX2015017426A priority Critical patent/MX2015017426A/en
Publication of MX2015017426A publication Critical patent/MX2015017426A/en

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Landscapes

  • Length Measuring Devices By Optical Means (AREA)

Abstract

The method for estimating the actual size of an object using a camera of a mobile terminal configured with a fixed focal distance involves the following steps (1) setting the focal distance of the camera of the mobile terminal; (2) capturing a sequence of images, moving the camera forwards or backwards the mobile terminal to the desired object; (3) analyzing each image and selecting the most neat image; (4) recognizing the desired object in the selected image and identifying the size (s) of interest of the object; (5) calculating the dimensions of the object in pixels; (6) reading the distance of the lens to the object (stored in the mobile terminal); (7) transforming the pixels into actual units; (8) estimating the actual dimension of the object. If the distance to the object, the focal distance and the size of the image are already known, the actual size of the object may be calculated using the formula of the lenses 1/f=1/do +1/di and the magnification equation M=hi/ho=-di/do.
MX2015017426A 2015-12-16 2015-12-16 Process for measuring the actual size of an oject using a camera of a mobile terminal configured with a fix focal distance. MX2015017426A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MX2015017426A MX2015017426A (en) 2015-12-16 2015-12-16 Process for measuring the actual size of an oject using a camera of a mobile terminal configured with a fix focal distance.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MX2015017426A MX2015017426A (en) 2015-12-16 2015-12-16 Process for measuring the actual size of an oject using a camera of a mobile terminal configured with a fix focal distance.

Publications (1)

Publication Number Publication Date
MX2015017426A true MX2015017426A (en) 2016-08-30

Family

ID=58160061

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2015017426A MX2015017426A (en) 2015-12-16 2015-12-16 Process for measuring the actual size of an oject using a camera of a mobile terminal configured with a fix focal distance.

Country Status (1)

Country Link
MX (1) MX2015017426A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3594869A1 (en) * 2018-07-11 2020-01-15 Aptiv Technologies Limited Assigned seating system for an automated-taxi
CN113865481A (en) * 2020-06-30 2021-12-31 北京小米移动软件有限公司 Object size measuring method, device and storage medium
CN114324078A (en) * 2021-12-24 2022-04-12 中煤科工清洁能源股份有限公司 Particle size identification method, device, equipment and medium

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3594869A1 (en) * 2018-07-11 2020-01-15 Aptiv Technologies Limited Assigned seating system for an automated-taxi
US10643439B2 (en) 2018-07-11 2020-05-05 Aptiv Technologies Limited Assigned seating system for an automated-taxi
US10991212B2 (en) 2018-07-11 2021-04-27 Motional Ad Llc Assigned seating system for an automated taxi
US11625993B2 (en) 2018-07-11 2023-04-11 Motional Ad Llc Assigned seating system for an automated taxi
CN113865481A (en) * 2020-06-30 2021-12-31 北京小米移动软件有限公司 Object size measuring method, device and storage medium
CN113865481B (en) * 2020-06-30 2024-05-07 北京小米移动软件有限公司 Object size measuring method, device and storage medium
CN114324078A (en) * 2021-12-24 2022-04-12 中煤科工清洁能源股份有限公司 Particle size identification method, device, equipment and medium

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