7 research outputs found
Object tracking using direct methods in RGB-D cameras
En esta tesis se presenta un análisis en profundidad de cómo se deben utilizar dos
tipos de métodos directos, Lucas-Kanade e Inverse Compositional, en imágenes
RGB-D y se analiza la capacidad y precisiĂłn de los mismos en una serie de experimentos
sintéticos. Estos simulan imágenes RGB, imágenes de profundidad (D)
e imágenes RGB-D para comprobar cómo se comportan en cada una de las combinaciones.
Además, se analizan estos métodos sin ninguna técnica adicional que
modifique el algoritmo original ni que lo apoye en su tarea de optimizaciĂłn tal y como
sucede en la mayorĂa de los artĂculos encontrados en la literatura. Esto se hace con
el fin de poder entender cuándo y por qué los métodos convergen o divergen para
que asĂ en el futuro cualquier interesado pueda aplicar los conocimientos adquiridos
en esta tesis de forma práctica. Esta tesis deberĂa ayudar al futuro interesado a
decidir quĂ© algoritmo conviene más en una determinada situaciĂłn y deberĂa tambiĂ©n
ayudarle a entender qué problemas le pueden dar estos algoritmos para poder poner
el remedio más apropiado. Las técnicas adicionales que sirven de remedio para estos
problemas quedan fuera de los contenidos que abarca esta tesis, sin embargo, sĂ se
hace una revisiĂłn sobre ellas.---ABSTRACT---This thesis presents an in-depth analysis about how direct methods such as Lucas-
Kanade and Inverse Compositional can be applied in RGB-D images. The capability
and accuracy of these methods is also analyzed employing a series of synthetic experiments.
These simulate the efects produced by RGB images, depth images and
RGB-D images so that diferent combinations can be evaluated. Moreover, these
methods are analyzed without using any additional technique that modifies the
original algorithm or that aids the algorithm in its search for a global optima unlike
most of the articles found in the literature. Our goal is to understand when and why
do these methods converge or diverge so that in the future, the knowledge extracted
from the results presented here can efectively help a potential implementer. After
reading this thesis, the implementer should be able to decide which algorithm fits
best for a particular task and should also know which are the problems that have
to be addressed in each algorithm so that an appropriate correction is implemented
using additional techniques. These additional techniques are outside the scope of
this thesis, however, they are reviewed from the literature
Bibliography of Lewis Research Center technical publications announced in 1987
This compilation of abstracts describes and indexes the technical reporting that resulted from the scientific and engineering work performed and managed by the Lewis Research Center in 1987. All the publications were announced in the 1987 issues of STAR (Scientific and Technical Aerospace Reports) and/or IAA (International Aerospace Abstracts). Included are research reports, journal articles, conference presentations, patents and patent applications, and theses
The benefits of an additional practice in descriptive geomerty course: non obligatory workshop at the Faculty of Civil Engineering in Belgrade
At the Faculty of Civil Engineering in Belgrade, in the Descriptive geometry (DG) course,
non-obligatory workshops named “facultative task” are held for the three generations of freshman
students with the aim to give students the opportunity to get higher final grade on the exam. The
content of this workshop was a creative task, performed by a group of three students, offering free
choice of a topic, i.e. the geometric structure associated with some real or imagery
architectural/art-work object.
After the workshops a questionnaire (composed by the professors at the course) is given to the
students, in order to get their response on teaching/learning materials for the DG course and the
workshop. During the workshop students performed one of the common tests for testing spatial
abilities, named “paper folding".
Based on the results of the questionnairethe investigation of the linkages between:students’
final achievements and spatial abilities, as well as students’ expectations of their performance on
the exam, and how the students’ capacity to correctly estimate their grades were associated with
expected and final grades, is provided. The goal was to give an evidence that a creative work,
performed by a small group of students and self-assessment of their performances are a good way
of helping students to maintain motivation and to accomplish their achievement.
The final conclusion is addressed to the benefits of additional workshops employment in the
course, which confirmhigherfinal scores-grades, achievement of creative results (facultative tasks)
and confirmation of DG knowledge adaption
The contemporary visualization and modelling technologies and the techniques for the design of the green roofs
The contemporary design solutions are merging the boundaries between real and virtual world. The Landscape architecture like the other interdisciplinary field stepped in a contemporary technologies area focused on that, beside the good execution of works, designer solutions has to be more realistic and “touchable”. The opportunities provided by Virtual Reality are certainly not negligible, it is common knowledge that the designs in the world are already presented in this way so the Virtual Reality increasingly used.
Following the example of the application of virtual reality in landscape architecture, this paper deals with proposals for the use of virtual reality in landscape architecture so that designers, clients and users would have a virtual sense of scope e.g. rooftop garden, urban areas, parks, roads, etc. It is a programming language that creates a series of images creating a whole, so
certain parts can be controlled or even modified in VR. Virtual reality today requires a specific gadget, such as Occulus, HTC Vive, Samsung Gear VR and similar.
The aim of this paper is to acquire new theoretical and practical knowledge in the
interdisciplinary field of virtual reality, the ability to display using virtual reality methods, and to present through a brief overview the plant species used in the design and construction of an intensive roof garden in a Mediterranean climate, the basic characteristics of roofing gardens as well as the benefits they carry.
Virtual and augmented reality as technology is a very powerful tool for landscape architects, when modeling roof gardens, parks, and urban areas. One of the most popular technologies used by landscape architects is Google Tilt Brush, which enables fast modeling. The Google Tilt Brush VR app allows modeling in three-dimensional virtual space using a palette to work with the use of a three dimensional brush.
The terms of two "programmed" realities - virtual reality and augmented reality - are often confused. One thing they have in common, though, is VRML - Virtual Reality Modeling Language.
In this paper are shown the ways on which this issue can be solved and by the way, get closer the term of Virtual Reality (VR), also all the opportunities which the Virtual reality offered us. As well, in this paper are shown the conditions of Mediterranean climate, the conceptual solution and the plant species which will be used by execution of intensive green roof on the motel “Marković”
Bibliography of Lewis Research Center technical publications announced in 1988
This bibliography contains abstracts of the technical reports that resulted from the scientific and engineering work performed and managed by the Lewis Research Center in 1988. Subject, author, and corporate source indexes are also included. All the publications were announced in the 1988 issues of STAR (Scientific and Technical Aerospace Reports) and/or IAA (International Aerospace Abstracts). Included are research reports, journal articles, conference presentations, patents and patent applications, and theses