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Digital measurement of irregularly shaped objects: Building a prototype
Halmstad University, School of Information Technology.
Halmstad University, School of Information Technology.
2023 (English)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The use of external dimensions in products has great importance in numerous areas and a digital measurement can lead to a more streamlined workflow. In this project are the suitability of sensors for measuring irregularly shaped objects investigated and a prototype for digital measurement built. The prototype consists of a measuring cart, Raspberry Pi, two cameras and MQTT with React web front-end. Measurement is started by a client and reported back to the client with the measurement station’s established measurement values. The result is presented as 79% of measured dimensions ending up within ±10 mm margin of the manually measured value. The result is based on tests of 10 objects with deviating characteristics to challenge the measurement capacity. The biggest challenge that has arisen has been the handling of objects’ perspectives in relation to the cameras. It is one of the areas that could be further developed to improve the reliability of the measuring station.

Abstract [sv]

Användningen av yttermått hos produkter har en stor betydelse inom en stor mängd områden och en digital mätning av detta kan medföra en mer strömlinjeformad arbetsgång. I detta projektet undersöks sensorers lämplighet för mätning av oregelbundet formade objekt och det byggs en prototyp för digital mätning. Prototypen består av en mätvagn, Raspberry Pi, två kameror och MQTT med React-baserat webbgränssnitt. Mätning startas av en klient och rapporteras tillbaka till klienten med mätstationens fastslagna mätvärdena. Resultatet slutar i att 79% av uppmätta dimensioner hamnar inom ±10 mm marginal av manuellt uppmätt värde. Ett resultat som baseras på tester av 10 objekt med avvikande egenskaper för att utmana mätkapaciteten. Det största utmaningen som uppkommit har varit hanteringen av objekts perspektiv i förhållande till kamerorna. Det är ett av områdena som fortsatt har möjlighet att vidarutvecklas för att ytterliggare förbättra mätstationens pålitlighet.

Place, publisher, year, edition, pages
2023. , p. 58
Keywords [en]
irregular objects, digital measurement, OpenCV, background subtraction, edge detection, sensors, prototype
Keywords [sv]
oregelbundna föremål, digital mätning, OpenCV, bakgrundssubtrahering, kantdetektering, sensorer, prototyp
National Category
Computer Systems
Identifiers
URN: urn:nbn:se:hh:diva-51167OAI: oai:DiVA.org:hh-51167DiVA, id: diva2:1778229
External cooperation
Meta Bytes AB
Educational program
Computer Engineer, 180 credits
Supervisors
Examiners
Available from: 2023-07-06 Created: 2023-06-30 Last updated: 2025-10-01Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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Output format
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