{"title":"The hands-on learning of practical photogrammetry for archaeology","authors":"Wesa Perttola, P. Rönnholm, B. Forsén","doi":"10.17690/023282.1","DOIUrl":"https://doi.org/10.17690/023282.1","url":null,"abstract":"Photogrammetric techniques have been applied in archaeology for over 140 years, but recently, automation in software has significantly increased the popularity of photogrammetry. In 2018, the Master’s Programme in Cultural Heritage at Helsinki University arranged a special intensive hands-on course on geodesy, photogrammetry and laser scanning in Greece in order to provide more in-depth practical skills to students in an inspiring environment. The course was established in co-operation with Aalto University and the Finnish Institute at Athens. In this article, we describe how practical photogrammetry can be learned on an intensive hands-on course. Hands-on experiences and experimental learning enable good practical skills and also a deeper connection and understanding of theory. We believe that the students on the course managed to add photogrammetry to their archaeological toolboxes for the rest of their careers.","PeriodicalId":248750,"journal":{"name":"The Photogrammetric Journal of Finland","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125128436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Juho-Pekka Virtanen, A. Julin, Kaisa Jaalama, H. Hyyppä
{"title":"Creating Open Online Applications with Geospatial Interfaces - Case Study \"Palvelututka\"","authors":"Juho-Pekka Virtanen, A. Julin, Kaisa Jaalama, H. Hyyppä","doi":"10.17690/021272.1","DOIUrl":"https://doi.org/10.17690/021272.1","url":null,"abstract":"Three-dimensional city models are an increasingly common data set maintained by many cities globally. At the same time, the focus of research has shifted from their production to their utilization in application development. We present the implementation of a demonstrator application combining the online visualization of a 3D city information model with the data from an application programming interface. By this, we aim to demonstrate the combined use of city APIs and 3D geospatial assets, promote their use for application development and show the performance of existing, openly available tools for 3D city model application development","PeriodicalId":248750,"journal":{"name":"The Photogrammetric Journal of Finland","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121550124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On the Atmospheric Refraction in Aerial Photogrammetry","authors":"M. Vermeer, P. Rönnholm","doi":"10.17690/019262.1","DOIUrl":"https://doi.org/10.17690/019262.1","url":null,"abstract":"We present an alternative, and possibly more intuitive, method for deriving the equation for correcting the atmospheric effect in near-vertical aerial images. For near-vertical images a horizontally stratified atmospheric model is assumed to be sufficient because the amount of error at the image plane is relatively small. Our derivation utilises Snell’s law and models the apparent uplift of a terrain point due refraction along the path from the ground object to the image. We show the approximate equivalence with older results in the literature, especially for aerial mapping flight heights under 7 km.","PeriodicalId":248750,"journal":{"name":"The Photogrammetric Journal of Finland","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124006226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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