Ski jumping hill geometry analysis and photogrammetric data acquisition during a ski jump

V magistrski nalogi je bilo v prvem delu postavljeno vprašanje ali je nekdanjo Bloudkovo skakalnico v Planici res načrtoval Stanko Bloudek ali je njen avtor Ivan Rožman. Skakalnica danes ne obstaja več, zato je bila opravljena analiza starih načrtov skakalnic v Planici. Na voljo sta bila dva načrta, katerih avtor je Bloudek in dva načrta, katerih avtor je Rožman. Načrte skakalnic je bilo potrebno na podlagi skic, podanih geometrijskih elementov in njihovih parametrov vektorizirati. S podobnostno transformacijo je bila izračunana primerjava med geometrijami projektiranih doskočišč. Za cenilko ugotavljanja podobnosti med geometrijami doskočišč je bilo uporabljeno povprečno odstopanje višin skakalnic vzdolž doskočišča in na krajšem odseku okoli točke K. Cilj drugega dela naloge je bilo praktično preveriti, ali lahko z uporabo neprofesionalnih kamer GoPro in metodo enoslikovne fotogrametrije pridobimo kvalitetne rezultate položaja skakalca v fazi leta. Kot testne podatke smo uporabili skoke mladinskih skakalcev na smučarski skakalnici Bauhenk v Kranju. Na območju skakalnice je bila vzpostavljena geodetska mreža oslonilnih točk, ki so bile uporabljene za določanje parametrov zunanje orientacije kamer. S kalibracijo s testnim poljem smo določili parametre notranje orientacije kamer. Za analizo natančnosti izračunanih položajev skakalcev smo uporabili nekatere oslonilne točke in določili odstopanje med koordinatami oslonilnih točk pridobljenih s klasično metodo geodetske izmere ter z metodo enoslikovne fotogrametrije.The first part the master thesis analyses the question regarding the true author of the former Bloudek ski jumping hill in Planica. It is unclear whether the author is Stanko Bloudek or Ivan Rožman. Since the ski jumping hill no longer exists, analysis of ski jumping hill plans was required. Two plans were available from each author. The geometry of the slopes was vectorized based on the drawings, the geometrical elements and their parameters shown on the plans. Using the similarity transformation method a comparison was calculated between the slope geometries. To determine the similarity between a pair of slopes the average elevation difference along the entire slope and along a small area around the K point was used. The goal of the second part of this thesis was to test the possibility and accuracy of determining the position of a ski jumper during the jump using the single photo photogrammetry method with unprofessional GoPro cameras. The test area was the ski jumping hill Bauhenk in Kranj with junior ski jumpers performing the test jumps. A geodetic network was deployed in the area made of control points which were used to calculate the extrinsic camera parameters. The cameras were calibrated using a test field to calculate intrinsic camera parameters. Accuracy analysis was performed using some of the control points and deviation was calculated between the position in the geodetic network and the position determined with the photogrammetry method