This master´s thesis deals with design of security system, which transmits captured video using mobile systems. There are chosen representatives of cameras and motion sensors that could be used in the construction. The thesis also deals with the theoretical design of the transmission system, which consists of a camera, a motion sensor, an USB modem and a microprocessor, that manages all operations. There is also a proposed block diagram of a communication method. The security system is designed and tested in various conditions.

<p>In the blooming era of smart edge devices, surveillance cameras have been deployed in many locations. Surveillance cameras are most useful when they are spaced out to maximize coverage of an area. However, deciding where to place cameras is an NP-hard problem and researchers have proposed heuristic solutions. Existing work does not consider a significant restriction of computer vision: in order to track a moving object, the object must occupy enough pixels. The number of pixels depends on many factors (How far away is the object? What is the camera resolution? What is the focal length?). In this study we propose a camera placement method that identifies effective camera placement in arbitrary spaces, and can account for different camera types as well. Our strategy represents spaces as polygons, then uses a greedy algorithm to partition the polygons and determine the cameras' locations to provide desired coverage. The solution also makes it possible to perform object tracking via overlapping camera placement. Our method is evaluated against complex shapes and real-world museum floor plans, achieving up to 85% coverage and 25% overlap.</p>

Title: Automatic On-Line Calibration and Calibration Monitoring of Cameras and Lidars Author: Jaroslav Moravec Department: Department of Software and Computer Science Education Supervisor: doc. RNDr. Elena Šikudová, Ph.D., Department of Software and Computer Science Education Abstract: Cameras and LiDARs are important devices in the automotive indus- try as their combination provides useful information (3D coordinates of a point, its colour and intensity) for perception, localization, mapping and prediction. Successful data fusion and interpretation requires accurate calibration of intrin- sic parameters of the sensors and their 6D relative pose. In this thesis, we present a target-less calibration method on three different calibration tasks. The solu- tion is based on a robust likelihood function constructed over the reprojection error of LiDAR edges relative to image edges. When the calibration slowly wears off, our online recalibration procedure can jointly follow the extrinsic calibration drift with an average error of 0.13◦ in rotation and 4 cm in translation. Based on this recalibration tool, we are also able to monitor the calibration and detect an abrupt decalibration in a couple of seconds. And we also present a fully automatic calibration routine that estimates both the extrinsic and intrinsic...

This thesis looks into how to design a web-based motion game, with a camera as an input device in order to make a game enjoyable to play while keeping the player movement rate as high as possible. The study explores different game mechanics for motion games and their impact on the players’ movement rate and the different types of physical motions created. The game mechanics are built on top of a JavaScript game development framework "Phaser" and uses "Three.js" as a tool for motion detection. We have used a custom built performance measuring tool in this project, which has been designed to record players’ motions while playing this game. We have implemented different game mechanics to activate different types of movement and then tested their outcome by using the performance tool to later analyze which game mechanic was the most successful. In this report we will take a look at how different game mechanics can create different experiences for the players’ and how essential they are for game development. This project is one of several that has been done on the project called the bug game. With a phase of learning the game code structure and lots of time invested into improving it. We analyzed the gameper formance and what changes that had to implemented in order to make the gameplay experience feels more responsive. From our study we could draw a conclusion on the relationship between game mechanics, the amount of movement generated by the players and players’ enjoyment of the game. Where physical games are most enjoyed when the goal is competing with other players with an achievable goal.

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Nowadays safety, along with efficiency, is one of the two strongest shaping forces of the automotive world, with advanced active safety applications being the major concentration of effort. Their development depends heavily on the quality of sensor data, a detailed measure of which is often up to the automotive manufacturers to derive, since the original equipment manufacturers (OEMs) may not disclose it on trade secrecy grounds. A model would not only provide a measure of the real-world performance of the sensor, but would also enable a higher degree of simulation accuracy which is vital to active safety function development. This is largely due to the high cost and risk involved in testing, a significant part of which is possible to be done in simulation alone. This thesis is an effort to derive a sensor model on behalf of Volvo Trucks of the performance of one of the most crucial sensors in current active safety - a lane detection camera.The work is focused on investigating approaches for modelling and simulation implementation of the lane estimation process within the black-box camera using reverse-engineering of the sensor's principles of operation. The main areas of analysis to define the factors that affect performance are the optics, image sensor, software and computer vision algorithms, and system interface. Each of them is considered separately and then methods for modelling are proposed, motivated, and derived accordingly. Finally, the finished model is evaluated to provide a measure of work success and a basis for further development. / Säkerhet är idag, tillsammans med effektivitet, en av de två starkaste förändringskrafterna i bilvärlden. Störst fokus ligger på avancerade aktiva säkerhetsfunktioner. Deras utveckling beror till stor del på kvaliteten på sensordata. En detaljerad modell för sensordata är ofta upp till fordonstillverkarna att härleda, eftersom tillverkare av sensorn ofta inte vill lämna ut sådan information. En modell ger inte bara ett mått på den verkliga prestandan hos sensorn, men ger också möjlighet till en högre grad av simuleringsnoggrannhet vilket är avgörande för utveckling av aktiva säkerhetsfunktioner. Tester är kostsamma och medför risker och en noggrann modell gör att tester kan utföras i simulering vilket minskar kostnader och risker. I denna avhandling härleds en sensormodell på uppdrag av Volvo Lastvagnar. Sensorn i fråga är en av de viktigaste sensorerna i det nuvarande aktiva säkerhetssystemet, kameran för att följa en körfil på vägen. Arbetet är fokuserat på undersökning av metoder för modellering och simulering av processen för filföljning baserat på sensorns funktionsprinciper. De viktigaste områdena för analys för att definiera de faktorer som påverkar prestanda är optik, bildsensorn, programvara, datorseendealgoritmer och systemets gränssnitt. Var och en av dessa behandlas separat och sedan föreslås och motiveras metoder för modellering. Slutligen utvärderas den färdiga modellen för att ge ett mått på hur framgångsrikt arbetet varit samt för att lägga en grund för ytterligare utveckling. / <p>The thesis work was carried out at Volvo Group Trucks Technology in Göteborg, Sweden. Supervisor for GTT: Mansour Keshavarz.</p>

The overall heat transfer coefficient of a building wall, the U value, is an interesting parameter to deduce the heat loss rate through the wall. The current method to determine this U value is well known, but is requires a lot of time to be performed. In this work a new idea of methodology is presented to get an accurate idea of the U value in a really smaller time, using an IR camera. IR thermography is a non destructive method that is mainly used today to carry out qualitative observations. In this work it is used as a quantitative tool to determine the conductivity of a wall knowing the external heat transfer coefficient. The error obtained on homogeneous and heterogeneous walls are smaller than 10 %, which is accurate enough for a fast measurement. The thermal mass of the wall can also be estimated with errors between 5 and 20 %, but only if the user has a good first guess of the real value. Finally some ideas are proposed when the heat transfer coefficient is not known, leading to less reliable results. More work is necessary to transform it as a usable method in everyday life. A part of the report concerns some attempts done with a simulation of the experiment, leading to no concrete results but it is still presented as it took some time to be studied.

The thesis project explores the architectural themes of time and virtuality in two parts. The first theme - time - is investigated through a photographical study of Kulturhuset in Stockholm, searching for physical traces of change. The study also reveals a faster time scale relating to the inhabitants and users of space.  The second part of the project relates to the photographs, building on the technique of the camera obscura to investigate the theme of virtuality. Through three full scale tests and different experiments, an attempt was made to manipulate the border between the physical and the virtual, demonstrated in a room obscura built up at the courtyard of the School of Architecture during the Diploma Days in June 2015.  The project moves from the observational part of the photograph into a physical exploration of what architecture is, how it works and possibly what it could be, from virtual to physical and back again. As a whole, the project is a collection of thoughts, of sights, of connections and of experiences. / Examensarbetet undersöker de arkitektoniska begreppen tid och virtualitet i två delar. Det första temat - tid - undersöks genom en fotografisk studie av Kulturhuset i Stockholm, ett sökande efter fysiska spår av förändring. Studien visar också en snabbare tidsskala som relaterar till användaren och brukaren av rummet. Den andra delen av projektet utgår från fotografierna och använder camera obscurans teknik för att undersöka temat virtualitet. Genom tre fullskaliga tester och olika experiment prövades gränsen mellan det fysiska och det virtuella, och demonstrerades slutligen i ett rum obscura som byggts upp på gården i Arkitekturskolan under Diploma Days, juni 2015. Projektet rör sig från ett observerande i fotografiet till en fysisk undersökning av vad arkitektur är, hur arkitektur fungerar och eventuellt vad det skulle kunna vara, från det virtuella till det fysiska och tillbaka igen. Som helhet är projektet en samling tankar, sevärdheter, kopplingar och erfarenheter.

Currently, as one of the most popular technologies being discussed and experimented, the application of flying copters in different industries is facing an obvious barrier; which is how to avoid obstacles while flying. One of the industries among all is small-sized package delivery business, which is also the master topic of a series of experiments. The most popular designs that have used for the Flying Copter Obstacle Avoidance System such as lidar scanners and infrared rangefinders are significantly accurate. However, with the heavyweight, expensive price and higher power consumption, these systems cannot be put into mass production. To reduce the cost and power consumption of the Obstacle Avoidance System, an innovative vision-based low-cost Obstacle Distance Estimation System for flying copters is demonstrated in this thesis. The Fisheye Lens Camera is used to provide a broader detection range and accurate results. Compared to other standard vision-based systems, the Fish Lens Camera Distance Estimation System can provide (around 360 degrees) extensive view for obstacle detection. Through the parallax pictures captured by the camera and the trigonometric rules, the system can estimate the distance to the target obstacle with reasonable results.

To manufacture better cameras at lower costs is of great interest to the surveillance industry. Inthe process of manufacturing cameras, the mounting of the optics and the digital image sensor, isa crucial part of producing a high quality image. For high resolution cameras, mechanical passivealignment of the optics and image sensor is insufficient for producing a picture of adequate quality.This is caused by inherit problems from manufacturing, resulting in performance issues for theparts. For the lens, these performance issues causes the light path to deviate and the focal pointto be off center. In the same way, manufacturing of the image sensor causes similar problems.These problems results in an image of subpar quality, if the interface solely relies on mechanicalpassive alignment. To compensate for these problems a computer aided machine is used to alignthe lens and the image sensor. The lens and the sensor, are placed in the machine, aligned forbest possible image quality and fixated in its place. This fixation is done with UV light curedadhesive. The process is drawn with some issues, the curing of the adhesive causes unpredictableshrinkage that affects the image quality. In addition, contaminations such as dust or dirt on theparts, are impossible to remove once the fixation is complete, causing blemishes on the images.These faults results in scrapping of expensive parts, which is costly for the manufacturer. Thisthesis aims to find alternative mounting solutions to the parts, that result in less scrapping ofexpensive components, without sacrificing image quality. The result is two concepts that can beused as inspiration for future improvement of surveillance camera manufacturing. A new adhesiveinterface, that can reduce, manufacturing cost and the unreliable shrinkage of the adhesive, as wellas a new mechanical coupling that allows reassembly after cleaning, is presented.iii