SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Folkesson Mattias) "

Sökning: WFRF:(Folkesson Mattias)

  • Resultat 1-4 av 4
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Bergström, Per, 1981-, et al. (författare)
  • Automatic in-line inspection of shape based on photogrammetry
  • 2016
  • Ingår i: SPS16. - Lund : SPS16.
  • Konferensbidrag (refereegranskat)abstract
    • We are describing a fully automatic in-line shape inspection system for controlling the shape of moving objects on a conveyor belt. The shapes of the objects are measured using a full-field optical shape measurement method based on photogrammetry. The photogrammetry system consists of four cameras, a flash, and a triggering device. When an object to be measured arrives at a given position relative to the system, the flash and cameras are synchronously triggered to capture images of the moving object. From the captured images a point-cloud representing the measured shape is created. The point-cloud is then aligned to a CAD-model, which defines the nominal shape of the measured object, using a best-fit method and a feature-based alignment method. Deviations between the point-cloud and the CAD-model are computed giving the output of the inspection process. The computational time to create a point-cloud from the captured images is about 30 seconds and the computational time for the comparison with the CAD-model is about ten milliseconds. We report on recent progress with the shape inspection system.
2.
  • Bergström, Per, et al. (författare)
  • Automatic in-line inspection of shape based on photogrammetry
  • 2016
  • Ingår i: The 7th International Swedish Production Symposium, SPS16, Conference Proceedings : 25th – 27th of October 2016. - Lund : Swedish Production Academy. ; s. 1-9
  • Konferensbidrag (refereegranskat)abstract
    • We are describing a fully automatic in-line shape inspection system for controlling the shape of moving objects on a conveyor belt. The shapes of the objects are measured using a full-field optical shape measurement method based on photogrammetry. The photogrammetry system consists of four cameras, a flash, and a triggering device. When an object to be measured arrives at a given position relative to the system, the flash and cameras are synchronously triggered to capture images of the moving object.From the captured images a point-cloud representing the measured shape is created. The point-cloud is then aligned to a CAD-model, which defines the nominal shape of the measured object, using a best-fit method and a feature-based alignment method. Deviations between the point-cloud and the CAD-model are computed giving the output of the inspection process. The computational time to create a point-cloud from the captured images is about 30 seconds and the computational time for the comparison with the CAD-model is about ten milliseconds. We report on recent progress with the shape inspection system.
  •  
3.
  •  
4.
  • Kadi, Fawzi, et al. (författare)
  • Strength, muscular endurance and EMG characteristics of thigh adductors
  • 2006
  • Ingår i: Isokinetics and exercise science. - 0959-3020. ; 14:3, s. 235-239
  • Tidskriftsartikel (refereegranskat)abstract
    • The assessment of thigh adductors' strength and endurance and electromyographical (EMG) characteristics has received little attention compared to other muscle groups. The aim of this study was to investigate strength, endurance performance and EMG characteristics of m. adductor longus and m. gracilis during concentric thigh adduction in soccer and bandy players. Muscular endurance was evaluated using the torque reduction during 70 repeated maximum concentric adductions at an angular velocity of 60°/s. The EMG mean frequency (MNF) and the signal amplitude ratio (SAR, index for muscles' ability to relax between contractions) were analysed. Peak torque decreased significantly throughout the test and no significant differences were found between the two groups. In both muscles, MNF decreased significantly throughout the test. There were no significant differences in MNF and in SAR variables between soccer and bandy players. In conclusion, the present findings reveal a number of significant aspects related to strength and electromyography of hip adductors. © 2006 - IOS Press and the authors. All rights reserved.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-4 av 4
 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy