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Reconstruction of 3D Information about Vehicles Passing in front of a Surveillance Camera
Dobeš, Petr ; Sochor, Jakub (referee) ; Herout, Adam (advisor)
This master's thesis focuses on 3D reconstruction of vehicles passing in front of a traffic surveillance camera. Calibration process of surveillance camera is first introduced and the relation of automatic calibration with 3D information about observed traffic is described. Furthermore, Structure from Motion, SLAM, and optical flow algorithms are presented. A set of experiments with feature matching and the Structure from Motion algorithm is carried out to examine results on images of passing vehicles. Afterwards, the Structure from Motion pipeline is modified. Instead of using SIFT features, DeepMatching algorithm is utilized to obtain quasi-dense point correspondences for the subsequent reconstruction phase. Afterwards, reconstructed models are refined by applying additional constraints specific to the vehicle reconstruction task. The resultant models are then evaluated. Lastly, observations and acquired information about the process of vehicle reconstruction are utilized to form proposals for prospective design of an entirely custom pipeline that would be specialized for 3D reconstruction of passing vehicles.
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Hand-Held 3D Scanner
Kukučka, Marek ; Španěl, Michal (referee) ; Hradiš, Michal (advisor)
The goal of this thesis is to implement a method of 3D reconstruction from pairs of images taken using a device that consists of two cameras. The method of stereo vision was chosen and the result is a sparse reconstruction of the scanned object. First, the cameras are calibrated and the acquired images are modified. In the next section, we look for corresponding key points in a pair of images. After obtaining the corresponding points, we an then perform their triangulation. For reconstruction from more then two consecutive images, we use recalculation of projection matrix. In this thesis an experiment is performed, with aim to test whether the reconstructed object corresponds in its dimensions to the real world.
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Vehicles speed measurement
Schoř, Zdeněk ; Richter, Miloslav (referee) ; Honec, Peter (advisor)
This master’s thesis deals with vehicles speed measurement. The first part is a theoreticalanalysis with an overview of the measurement devices, which are being used nowadays.The second part of the thesis focuses on creating a method for vehicles speed measure-ment in a common traffic situaction. Measurement is based on digital image processingfrom a camera and determining the movement in the image.For movement determination is used license plate detection and other possible methodsare explained in the thesis for future improvement.Created measurement method is using vehicle with known proportions for visual scenecalibration. The MATLAB programming environment is used to detect license plate andfor calibration.Test measurement is conducted in the thesis, which is compared with other referencespeed measurement method.The purpose of the thesis is to use the proposed method to reduce the cost of measuringthe speed of vehicles and contribute to safety and smoothness on the roads.
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Stereoscopic Navigation of a Robot
Žižka, Pavel ; Šolony, Marek (referee) ; Žák, Pavel (advisor)
This work describes 3D reconstruction using stereo vision. It presents methods for automatic localization of corresponding points in both images and their reprojection into 3D space. Application created can be used for navigation of a robot and object avoidance. Second part of the document describes chosen components of the robot. Path finding algorithms are also discussed, particulary Voronoi's diagram.
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Automatic Processing of Recordings from In-Car Camera
Klos, Dominik ; Herout, Adam (referee) ; Španěl, Michal (advisor)
This thesis deals with the automatic processing of recordings from in-car camera, which is used for estimating distances in a scene filmed. To achieve this goal, it uses the methods of image processing, spatial geometry of the scene and 3D reconstruction, whose final output is a partial model. For this aim, the Bundler tool is used. Results of reconstruction are visualized in the application, which then allows to estimate the distance of objects from the camera or the distance between each other.
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3D scanner
Bezecný, Martin ; Janáková, Ilona (referee) ; Richter, Miloslav (advisor)
This bachelor thesis concerns the problem of 3D object reconstruction from it's photographs. The aim of thesis is to study the problem of 3D reconstruction using photogrammetry and then apply these findings to create a program that implements the reconstruction.
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3D RECONSTRUCTION OF ABANDONED SETTLEMENTS OF THE CENTRAL POVLTAVÍ
Andrštová, Martina ; Štych, Přemysl (advisor) ; Jaroš, Jakub (referee)
3D reconstruction of abandoned settlements of the central Povltaví ABSTRACT This work deals with the use of Geoinformatic systems to create the three-dimensional model of an extinct landscape. The main subject of this bachelor work is the three-dimensional reconstruction of extinct municipalities in the central area of the Vltava River. The main task was to create digital terrain model of the original Vltava valley. The passage from Zvírotice to Svatojánské proudy has been chosen as the model territory. Two selected municipalities Zvírotice and Živohošť were thoroughly worked up. Many data sources were used in this work, such as historical photographs, historical aerial photographs or current orthophoto maps. Digital terrain models were created with the help of these datas and then the models were overlain with the orthophotos. 3D models of buildings and vegetation were put in the terrain models. Two periods were compared, 50th of the 20th century and present. Results of this work are fly-by animations and perspective scenes. The results will be used in newly built museum in Chotilsko town. Keywords: 3D reconstruction, DTM, land cover changes, orthophoto
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3D visualization of reconstructed settlements on web
Kryshenyk, Pavlo ; Štych, Přemysl (advisor) ; Brůha, Lukáš (referee)
3D visualization of reconstructed settlements on web Abstract The object of this thesis was 3D reconstruction and visualization of historical urban objects in web environment. The thesis also deals with issues associated with the topic and creation of a web portal for publishing 3D reconstructions of different authors. A 3D reconstruction of historical appearance of the Theatre Square and part of Korso street in the city Uzhgorod was held. Modeling was conducted in the Trimble SketchUp software using historical pictures for photo textures of buildings. Web application has been developed using the tools of Google Earth API. The work results in a web application involving visualization of 3D models of buildings in Google Earth environment, virtual tours, tools for illumination control, placemarks with popup balloons, carrying multimedia and textual information about the objects and other visualization tools. Keywords: 3D reconstruction, Google Earth API, SketchUp, web application, Uzhgorod
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3D reconstruction of landscape in abandoned villages of borderlands and military zones
Jelének, Jan ; Štych, Přemysl (advisor) ; Oršulák, Tomáš (referee)
3D reconstruction of landscape: A case study of extinct municipalities in Czech borderlands and military areas Abstract This work deals with theoretical and practical possibilities to use GIS to create three-dimensional model of landscape changes. The object of the work was the creation and visualization of three-dimensional model of extinct municipalities Padrť in a military area Brdy and Košťálkov in the borderlands. The work used many available data sources, such as historical aerial photographs, historical photos, current orthophotos or historical maps. These data and specialized software were used to create digital models of the selected area, including three-dimensional models of buildings and vegetation, with emphasis on historical closeness. Work was focused on three selected periods of history: 40th of the 18th century, 30th to 50th of the 20th century and present. The work resulted in fly-by animations and perspective scenes, which are compared with historical photographs. Historical models are also confronted with each other by a dynamic fading in fly-by animations.
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Hand-Held 3D Scanner
Kukučka, Marek ; Španěl, Michal (referee) ; Hradiš, Michal (advisor)
The goal of this thesis is to implement a method of 3D reconstruction from pairs of images taken using a device that consists of two cameras. The method of stereo vision was chosen and the result is a sparse reconstruction of the scanned object. First, the cameras are calibrated and the acquired images are modified. In the next section, we look for corresponding key points in a pair of images. After obtaining the corresponding points, we an then perform their triangulation. For reconstruction from more then two consecutive images, we use recalculation of projection matrix. In this thesis an experiment is performed, with aim to test whether the reconstructed object corresponds in its dimensions to the real world.
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