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137 Uppsatser om Aerial photographs - Sida 1 av 10

Digitala fotogrammetriska arbetsstationer för skoglig flygbildstolkning :

SCA Skog has taken the initiative to this Master?s thesis. Today SCA Skog has a great need to update their informtion on young forest stands across large areas. Traditional field inventory methods for updating stand databases are expensive and time consuming. However, the inventory could be made more efficient if stand boundaries and stand characteristics are derived from Aerial photographs.

Flygbildsanalys av trädskiktets status efter brand : en metodstudie

During the past years fire has been identified as an important factor for nature conservation in the forest landscape. To accurately quantify the size of a burnt area is obviously important, but also to quantify the degree of fire damage to the tree canopy. Such data are important for assessing the conservation value, and to support planning and management of the burned area in the future. I have examined how to estimate the status of tree crowns after fire from interpretation of Aerial photographs. This is possible because fire changes the structure of tree crowns and this influences the colours in Aerial photographs by spectral reflection. Included in the study are four areas, three of which burned in 2005 and one in 2006.

Gallringsinventering från helikopter utrustad med profilerande laser och kamera för låghöjdsfotografering

Today Holmen Skog finds and selects suitable thinning stands using data on upper height and basal area. These figures are often based on basic forest data that has been updated with the help of growth prediction models. The problem is that these figures are not always correct. The aim of this study was to investigate if a combination of data from a profiling laser and a digital camera for low elevation photography, can be used for collecting data on number of stems per ha, tree species mixture as well as basal area weighted mean height and upper height for stands. The possibility to use these data to assess the need for thinning cutting was also investigated.Laser data and Aerial photographs were collected from a helicopter operating at an approximate height of 100 meters.

Stamräkning och identifiering av åtgärdsbehov i röjnings- och gallringbestånd med hjälp av låghöjdsbilder

This report is an assessment of the feasibility of using Aerial photographs to estimate number of stems per hectare in young forest stands, used together with upper height to determine the need for pre-commercial thinning or ordinary thinning cutting. Aerial photo-interpretation was conducted in 2007 on assignment of Stora Enso Skog AB. A mean height function based on stand age produced with data from Bergvik Skog AB?s 2006 forest inventory assessment was used as a proxy for upper height and used together with photo-interpreted number of stems per hectare to determine the need for thinning cutting according to Bergvik Skog AB?s definitions. The test area is located north of Falun on Bergvik Skog AB?s land.Flight altitude was approximately 900 m above ground and the aerial photos were taken by L&L Flygbildteknik AB.

Det Blomqvistska släktarkivet

For my advanced degree in archival science, I have organized and catalogued the Blomqvist family archive.  The Blomqvist family archive consists of records from the end of the 19th century to the beginning of the 21th century. The records in the archive depict and describe different aspect of the Blomqvist familys life and work. Specific problems and theoretical questions that appeared during the cataloguing of the Blomqvist archive were related to the great presence of objects and photographs in the archive. A discussion concerning the role of objects in archives and within archive institution took place. The problem with cataloguing photographs as well as the problem of searching for photographs in archives, were also discussed.       .

Fotografers och föräldrars attityder kring skönhetsretuschering i skolfotografier : En semistrukturerad intervjustudie

Through semi-structured interviews with 8 school photographers and 10 parents,this study attempted to clarify what photographers and parents of children(aged 1?5) in preschool think of photography business in the current situationprovides retouching children?s school photographs and what they considers tobe acceptable. The result shows that companies do not offer photo retouchingfrequent, but performs this service at the direct request of the customer. Themajority of parents agreed that dirt and food was accepted to be removed fromthe photograph, and that this does not affect the child's self image. The photographersbelieve that one should be very careful when it comes to children andretouching, and that the debate is important..

Borrie kyrka - En byggnadsarkeologisk undersökning

AbstractThe church of Borrie lies about 10 km north of Ystad in the southern of Sweden. Though thechurch is one of the smallest in Scania it holds a very complicated history.In this essay all relevent material concerning the church of Borrie is presented. The materialdoes not only concist of literature, but also photographs. The purpose of this investigationwas to use this material to sort out and explain the history of the church of Borrie.The problem is presented in the following points:1. Is it possible to do a building archaeological analysis with photographs of the churchas the main material?2.

Sammanfogning av videosekvenser från flygburna kameror

The usage of Unmanned Aerial Vehicles (UAV) for several applications has in-creased during the past years. One of the possible applications are aerial imagecapturing for detection and surveillance purposes. In order to make the captur-ing process more efficient, multiple, cameraequipped UAV:s could fly in a for-mation and as a result cover a larger area. To be able to receive several imagesequences and stitch those together, resulting in a panoramavideo, a softwareapplication has been developed and tested for this purpose.All functionality are developed in the language C++ by using the software li-brary OpenCV. All implementations of different techniques and methods hasbeen done as generic as possible to be able to add functionality in the future.Common methods in computervision and object recognition such as SIFT, SURF and RANSAC have been tested..

Modellering av delvis kända objekt med hjälp av bilder

Today many different types of lock systems are used all over the world. Passwords, finger prints and magnetic strips are a few examples. When the key is a three dimensional object, lika a physical metal key, the security depends, in a high degree, on that you can?t copy the object without access to it. One approach to copying the object is photographing the object, and from these photographs create a copy.

Småvatten då och nu : en förändringsstudie av småvatten i Skåne och deras kväveretentionsförmåga

Wetlands play an important role in the ecosystem. They reduce the impact of flow flux in the drainage area, acts as upholder of biodiversity, as an esthetic and recreational component in the landscape and they have the ability to reduce nutrients such as nitrogen, and help preventing eutrophication in costal areas.The number of wetlands in Scania have, due to the intensified agriculture been reduced to maximize the area suitable for crops.However since the mid 80th the consequences of this has been acknowledged, and many wetlands have been restored.This master?s thesis aim to see what impact this development have had on wetlands in Scania over the last 60 years. And also look at some of those factors important for the efficiency of nitrogen removal in wetlands. During the process a detailed manual for inventories of this sort was created.The material used to execute the inventory of wetlands where Aerial photographs over Scania from the 1940th, 1980th and 2000.

Lilaköttig taggsvamp, Sárcodon fuligíneovioláceus : miljökrav i Sverige och en analys av vad som styr artens etablering

Burnt Spine-cap Sárcodon fuligíneovioláceus are one the most endangered mycorrhizal fungal species in Europe. They have their main distribution in Sweden. It form mycorrhiza with pine and dependent on limestone, which makes it connected to a rare environment. It has therefore been important to study the ecology of it further and to recognise the requirement it has on the environment more accurate and what it need to establish in a new area. In this study, 31 of 34 known sites in Sweden was visited and studied in field and their history analysed through Aerial photographs.

Less is More - en studie om utformningen av inlägg på sociala medier

Theory has concluded that consumers evaluate advertising not only based on what the advertiser's message aims to communicate, but also how the message is communicated. As the most popular activity on the world's largest social media channels is to upload and share photos, it has become crucial for advertisers to define strategies that maximize the reach of photo posts. Two observed variations of images used in posts are graphical images and digital photographs. The aim of this study is to investigate which of these two strategies that generate most positive impact on the sender and its brand. 230 users of the Chinese Facebook and Twitter counterpart, Sina Weibo, were exposed to manipulated Sina Weibo posts after which they answered a survey.

Ajuourhållning av ungskogsdata med hjälp av digitala flygbilder :

The purpose of this study is to investigate whether it is possible for SCA to update their stand register with use of digital aerial photos photographed with a Zeiss/Intergraph DMC. ?Updating? in this study implies the delineation of stands and estimating stand variables such as average stand height, volume density, stand volume, and tree species composition in order to identify stands which can be of current interest for thinning. The study also includes how the aerial photo material and experience of the interpreter can influence the quality of the interpreted variables. The aerial photo interpretations were made by both experienced and inexperienced interpreters.

Defragmentering. En fotobok om fragment

How do you reed a book? Do you start at the beginning,or do you begin with the end or maybe in the middle? Inmy exam project I elected to work with a photographicpublication about fragments of pictures combined in differentways, changing the context of the photographs andmaking the reader search for the whole picture, literary.During the project I tried to create a method for foldingwhich would make the pictures communicate differentlydepending on how they where stacked against each other.I wanted to explore new ways to read the photo book, andhow the format could be transformed by folding, to beable to show the pictures in a larger scale. Working withthe material from an earlier project about defragmentation,I wanted to create a book that would correspond tothis and figure out how it would work..

Bilden av ledaren - en tolkning av fotografier i årsredovisningar

The visual representation of management (board of directors, chief executive officer and executive management) in annual reports is an area of scholarship that has not been explored much. In the present study a sample of 87 annual reports from business enterprises within a Swedish context, comprising about 300 photographs, was analyzed using an explorative method of analysis based on semiotics and grounded theory. The influence of the context on images raises a question discussed in the study: Should the photographs in the annual report be categorized as portraits, advertisements and others or should the annual report be regarded as a genre of its own? The photographs showed patterns of homogeneity regarding gender, dress, gestures, colours, pictorial compositions et cetera. The position of the (male) CEO is privileged, but he is also connected to the group through various means like dress and style, thereby further underscoring management as a male enterprise and demonstrating the importance of the suit and necktie in creating homosocial bonds.

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