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Title:Estimating the size of plants by using two parallel views
Authors:ID Videc, Barbara (Author)
ID Rakun, Jurij (Author)
Files:.pdf Agricultura_2017_Videc,_Rakun_Estimating_the_size_of_plants_by_using_two_parallel_views.pdf (727,92 KB)
MD5: 48FFDE6106D7F1F35BFBD2042C37D72D
PID: 20.500.12556/dkum/dac96c92-22b7-4518-b8d7-507bf086e155
 
URL http://content.sciendo.com/view/journals/agricultura/14/1-2/article-p1.xml
 
Language:English
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FKBV - Faculty of Agriculture and Life Sciences
Abstract:This paper presents a method of estimating the size of plants by using two parallel views of the scene, taken by a common digital camera. The approach relays on the principle of similar triangles with the following constraints: the resolution of the camera is known; the object is always in parallel to the camera sensor and the intermediate distance between the two concessive images is available. The approach was first calibrated and tested using one artificial object in a controlled environment. After that real examples were taken from agriculture, where we measured the distance and the size of a vine plant, apple and pear tree. By comparing the calculated values to measured values, we concluded that the average absolute error in distance was 0.11 m or around 3.7 %, and the absolute error in high was 0.09 m or 4.6 %.
Keywords:digital image processing, size, digital camera, pixels, similar triangles
Publication status:Published
Publication version:Version of Record
Year of publishing:2017
Number of pages:str. 1-7
Numbering:Letn. 14, št. 1/2
PID:20.500.12556/DKUM-72617 New window
ISSN:1580-8432
UDC:77:58:004.9
ISSN on article:1580-8432
COBISS.SI-ID:4480044 New window
DOI:10.1515/agricultura-2017-0012 New window
NUK URN:URN:SI:UM:DK:Z2NKDIRL
Publication date in DKUM:10.10.2018
Views:1334
Downloads:321
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
VIDEC, Barbara and RAKUN, Jurij, 2017, Estimating the size of plants by using two parallel views. Agricultura [online]. 2017. Vol. 14, no. 1/2, p. 1–7. [Accessed 25 March 2025]. DOI 10.1515/agricultura-2017-0012. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=72617
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Record is a part of a journal

Title:Agricultura
Publisher:Univerza v Mariboru, Fakulteta za kmetijstvo, Univerza v Mariboru, Fakulteta za kmetijstvo, Univerzitetna založba Univerze v Mariboru
ISSN:1580-8432
COBISS.SI-ID:116855808 New window

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:10.10.2018

Secondary language

Language:Slovenian
Title:Ocenjevanje velikosti rastlin s pomočjo dveh vzporednih pogledov
Abstract:V delu je opisana metoda za ocenjevanje velikosti rastlin s pomočjo dveh vzporednih pogledov na isto sceno, zajetih s pomočjo digitalne kamere. Postopek temelji na principu podobnih trikotnikov z naslednjimi omejitvami: znani so podatki o ločljivosti uporabljene kamere; opazovani predmet je vedno vzporeden s senzorjem kamere; znan je podatek o vmesni razdalji med dvema korakoma zajema podatkov. Prvi korak v delu opisuje umerjanje metode ob pomoči umetnega predmeta v nadzorovanih pogojih. Drugi korak pa opisuje uporabo postopka na realnih primerih iz področja kmetijstva, kjer je bila ocenjena velikost vinske trte, jablane in hruške. Ob primerjavi dobljenih podatkov z izmerjenimi je bilo ugotovljena absolutna napaka v razdalji do predmetov v velikosti 0,11 m, oz. 3,7 % glede na celotno oddaljenost, absolutna napaka v velikosti v obsegu 0,09 m oz. 4,6 %.
Keywords:digitalno procesiranje slik, velikost, digitalna kamera, slikovni elementi, podobni trikotniki


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  1. Agricultura

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