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Noggrannhet och precision vid beståndsuppskattning av mobilapplikationen KATAM
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology.
2019 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Accuracy and precision in stand measurements of the mobile application KATAM (English)
Abstract [sv]

Syftet med arbetet var att utvärdera mobilapplikationen KATAM avseende noggrannhet, tidsåtgång, precision och praktisk användning i jämförelse med volymuppskattning med dataklave och skördarrapport. Resultatet vid diameterjämförelsen visar på snarlika uppskattningar från KATAM respektive dataklaven. KATAM hade högre medelgrundyta, 7 % och grövre medeldiameter, 3,7 %, i jämförelse med dataklaven. KATAM hade även överskattningar av medelstammen volym i jämförelse med skördarrapporten och dataklaven, från 2,5 % till 17,6 % beroende på vilket urval av provytor och vilken programversion av KATAM som användes. Underlaget från volymuppskattningar var litet och hade felkällor vilket gjorde resultaten från mätningarna osäkra. Trots att studien visade på en överskattning av diametern talar den inbördes precisionen för att KATAM skulle kunna bli ett alternativ till Dataklaven vid uppskattning av medeldiametern.

Abstract [en]

The purpose of this essay was to evaluate the mobile application KATAM of accuracy, time, precision and practical use in comparison to volume estimation with data Digital Caliper and harvester report. The result of the diameter comparison showed similar estimates from KATAM and the Digital Caliper respectively. KATAM had a higher mean basel area, 7% and coarser mean diameter, 3.7%, compared to the Digital Caliper. KATAM also had overestimations in volume as compared to the harvesting report and the Digital Caliper concerning the mean stem, from 2.5% to 17.6%, depending on which sample areas were included and which version of KATAM was used. However, the basis of volume estimates was small and had error sources, which made the results of the measurements uncertain. Although the study shows an overestimation of the diameter, the mutual precision indicates that KATAM could be an alternative to the Digital Caliper when estimating the mean diameter.

Place, publisher, year, edition, pages
2019. , p. 23
Keywords [en]
KATAM, Digital Caliper, Mobile application, Forest mensuration, Precision
Keywords [sv]
KATAM, Dataklave, Mobilapplikation, Precision, Noggrannhet, skogsuppskattning
National Category
Forest Science
Identifiers
URN: urn:nbn:se:lnu:diva-86142OAI: oai:DiVA.org:lnu-86142DiVA, id: diva2:1334551
External cooperation
VIDA skog, KATAM Technologies AB
Educational program
Bachelor of Science in Forest Sciences Program, 180 credits
Supervisors
Examiners
Available from: 2019-07-03 Created: 2019-07-03 Last updated: 2019-07-03Bibliographically approved

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Forest Science

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CiteExportLink to record
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