Handledare: Michael Doggett
Examinator: Per Andersson
Startat: 2023-01-16
ISSN: 1650-2884 / LU-CS-EX: 2023-14

Handledare: Michael Doggett
Examinator: Jacek Malec
Startat: 2023-01-16
Företag: Tactel 556508-4638
ISSN: 1650-2884 / LU-CS-EX: 2023-28

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2023-01-16
Företag: Axis Communications AB 556253-6143
ISSN: 1650-2884 / LU-CS-EX: 2023-22

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2022-03-31
ISSN: 1650-2884 / LU-CS-EX: 2022-57

Handledare: Pierre Nugues
Examinator: Michael Doggett
Startat: 2022-02-01
Företag: Axis Communications Aktiebolag 556253-6143
ISSN: 1650-2884 / LU-CS-EX: 2022-31

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2022-01-27
ISSN: 1650-2884 / LU-CS-EX: 2022-35

Handledare: Alexandros Sopasakis (Matte)
Examinator: Michael Doggett
Startat: 2021-11-02
Företag: Axis Communications Aktiebolag 556253-6143

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2021-02-02
Företag: Spiideo AB 556883-4435
ISSN: 1650-2884 / LU-CS-EX: 2022-01

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2021-01-18
ISSN: 1650-2884 / LU-CS-EX: 2021-40

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2020-02-24
ISSN: 1650-2884 / LU-CS-EX: 2020-64

Handledare: Elin Anna Topp
Examinator: Michael Doggett
Startat: 2020-01-20
ISSN: 1650-2884 / LU-CS-EX: 2020-61

Handledare: Pierre Moreau
Examinator: Michael Doggett
Startat: 2019-12-02
ISSN: 1650-2884 / LU-CS-EX: 2020-35

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2019-09-02
Företag: EA Digital Illusions CE AB 556710-6520
ISSN: 1650-2884 / LU-CS-EX: 2020-14

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2019-01-21
ISSN: 1650-2884 / LU-CS-EX: 2019-32

Handledare: Niels Chr. Overgaard
Examinator: Michael Doggett
Startat: 2018-02-13
Företag: Axis Communications AB
ISSN: 1650-2884 / LU-CS-EX: 2018-39

Handledare: Flavius Gruian
Examinator: Michael Doggett
Startat: 2018-02-05
Företag: ARM
Presentation: 2018-05-31
ISSN: 1650-2884 / LU-CS-EX: 2018-33

Handledare: Michael Doggett
Examinator: Jörn Janneck
Startat: 2018-01-15
Företag: King Mobile AB 556885-4409
Presentation: 2018-05-31
ISSN: 1650-2884 / LU-CS-EX: 2018-18

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2018-01-10
ISSN: 1650-2884 / LU-CS-EX: 2018-02

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2017-09-04
ISSN: 1650-2884 / LU-CS-EX: 2018-42

Handledare: Michael Doggett
Examinator: Jörn Janneck
Startat: 2017-03-29
ISSN: 1650-2884 / LU-CS-EX: 2017-30

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2017-01-16
Företag: EA DICE
ISSN: 1650-2884 / LU-CS-EX: 2017-25

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2016-02-11
ISSN: 1650-2884 / LU-CS-EX: 2016-33

Handledare: Michael Doggett
Handledare: Fuad Tabba
Examinator: Flavius Gruian
Startat: 2016-01-25
Företag: ARM Sweden AB
ISSN: 1650-2884 / LU-CS-EX: 2016-17

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2016-01-25
ISSN: 1650-2884 / LU-CS-EX: 2016-42

Handledare: Michael Doggett
Examinator: Jörn Janneck
Startat: 2015-08-24
Företag: Ericsson AB
ISSN: 1650-2884 / LU-CS-EX: 2016-13

Handledare: Tomas Akenine-Möller
Examinator: Michael Doggett
Startat: 2015-07-13
Företag: Intel Sweden AB 556189-6027
Presentation: 2018-05-31
ISSN: 1650-2884 / LU-CS-EX: 2018-11

Handledare: Per Ganestam
Examinator: Michael Doggett
Startat: 2015-05-05
ISSN: 1650-2884 / LU-CS-EX: 2016-34

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2015-02-02
ISSN: 1650-2884 / LU-CS-EX: 2015-39

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2015-01-26
Företag: Dassault Systèmes AB
ISSN: 1650-2884 / LU-CS-EX: 2015-41

Handledare: Michael Doggett
Examinator: Per Andersson
Startat: 2014-11-03
Företag: AXIS Communications AB
ISSN: 1650-2884 / LU-CS-EX: 2015-33

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2014-10-20
ISSN: 1650-2884 / LU-CS-EX: 2015-07

Handledare: Michael Doggett
Examinator: Tomas Akenine-Möller
Startat: 2014-09-08
ISSN: 1650-2884 / LU-CS-EX: 2015-05

Handledare: Michael Doggett
Examinator: Tomas Akenine-Möller
Startat: 2014-09-02
Presentation: 2015-04-29
ISSN: 1650-2884 / LU-CS-EX: 2015-09

Handledare: Karl Sjöstrand
Examinator: Michael Doggett
Startat: 2014-03-29
Presentation: 2014-06-13
ISSN: 1650-2884 / LU-CS-EX: 2014-23

Examinator: Michael Doggett
Startat: 2014-02-04
Företag: DICE
Presentation: 2019-06-11
ISSN: 1650-2884 / LU-CS-EX: 2020-26

Examinator: Michael Doggett
Startat: 2014-01-07
Företag: ARM Sweden AB
ISSN: 1650-2884 / LU-CS-EX: 2014-34

Handledare: Michael Doggett
Examinator: Tomas Akenine-Möller
Startat: 2013-09-02
ISSN: 1650-2884 / LU-CS-EX: 2014-03

Examinator: Michael Doggett
Startat: 2013-03-25
Företag: Illusion Labs
ISSN: 1650-2884 / LU-CS-EX: 2014-30

Examinator: Michael Doggett
Startat: 2013-03-04
Företag: Ubisoft Entertainment Sweden AB

Handledare: Per Ganestam
Examinator: Michael Doggett
Startat: 2013-02-25

Handledare: Tomas Akenine-Möller
Handledare: Jim Nilsson
Examinator: Michael Doggett
Startat: 2012-10-29
Företag: Intel Sweden AB
Presentation: 2013-03-13
ISSN: 1650-2884 / LU-CS-EX: 2013-08

Sammanfattning:
This thesis compares the energy efficiency of state-of-the-art CPU and GPU solutions for ray tracing; GPU-based OptiX and CUDA RT and CPU-based Embree, and investigates the reasons behind the differences. The comparison is done by measuring the energy in kilojoules that needs to be spent to attain a specific level of image quality. Recently there have been successful efforts to leverage modern programmable GPUs for ray tracing. However, in professional so-called render farms, CPUs are still dominant.

Path tracing is a popular method based on ray tracing to produce digital images with correct global illumination. The main drawback with this approach is that it is generally very computationally expensive to produce an image. It is often necessary to trace hundreds or even thousands of rays per pixel to produce a good image. In motion picture productions, studios have big render farms to accelerate rendering. In these settings, power and cooling comes with a significant cost, and thus power efficiency is of utmost importance.

We show that the relative energy efficiency between the CPU and GPU solutions examined are within a factor of two, where CPU-based Embree is on par with GPU-based OptiX.

Handledare: Michael Doggett
Examinator: Flavius Gruian
Startat: 2012-09-24
Presentation: 2013-06-05
ISSN: 1650-2884 / LU-CS-EX: 2013-19

Handledare: Jonas Gustavsson
Examinator: Michael Doggett
Startat: 2012-09-24
Företag: Sony Mobile Communication

Examinator: Michael Doggett
Startat: 2012-02-03
Företag: EA Digital Illusions CE (DICE)
Presentation: 2012-06-11
ISSN: 1650-2884 / LU-CS-EX: 2012-18

Handledare: Michael Doggett
Examinator: Tomas Akenine-Möller
Startat: 2012-01-17
ISSN: 1650-2884 / LU-CS-EX: 2012-16

Handledare: Magnus Andersson, grafikgruppen
Examinator: Michael Doggett
Startat: 2012-01-16

Handledare: Rasmus Barringer
Examinator: Michael Doggett
Startat: 2011-09-29
Presentation: 2012-05-23
ISSN: 1650-2884 / LU-CS-EX: 2012-10

Handledare: Michael Doggett
Examinator: Tomas Akenine-Möller
Startat: 2010-10-25
Presentation: 2011-03-24
ISSN: 1650-2884 / LU-CS-EX: 2011-07

Handledare: Michael Doggett
Examinator: Tomas Akenine-Möller
Startat: 2010-09-21

Examinator: Michael Doggett
Startat: 2010-05-31
Företag: Ericsson
Presentation: 2010-11-01
ISSN: 1650-2884 / LU-CS-EX: 2010-37

Sammanfattning:
With 3D display technology emerging in the mobile phone industry, the possibility to watch 3D movies comes to the cellular phone. Since many cell phones today are equipped with large touch screen displays this enables new ways to interact with video players. For instance, the user could swipe the finger to change the current sequence viewpoint, giving the effect of being present at the actual 3D scene. With the limited amount of resources in a mobile environment, how can this be achieved in a smooth and synchronized manner?
In this thesis, an exploratory study has been conducted to better understand the nature of these challenges. This resulted in the decision of what platform and operating system to use. A prototype video player application called VideoPlayer3D was then investigated and implemented using the information compiled from the exploratory study.
The VideoPlayer3D prototype has been evaluated and the results are very promising. It enables the user to playback 3D and 2D video, both from SD-card and streaming over the Internet. It handles instantaneously switching between four different viewpoints, although at the expense of resolution. Future work includes adding support for an arbitrary number of viewpoints, zooming in/out the video and allow for changing the horizontal disparity.

Handledare: Magnus Andersson
Examinator: Michael Doggett
Startat: 2010-04-06
Presentation: 2010-12-17
ISSN: 1650-2884 / LU-CS-EX: 2011-01

Sammanfattning:
This report describes the migration of an analytical motion blur rasterizer
implementation on the CPU to the GPU using OpenCL. Data- and algorithmic
parallelism is identified and exploited to gain the performance benefits
of the highly parallel GPU. Some promising results are presented, with
interactive frame rates for simple scenes with low to medium motion.

Examinator: Michael Doggett
Startat: 2010-01-27
Företag: TAT - The Astonishing Tribe
Presentation: 2010-06-11
ISSN: 1650-2884 / LU-CS-EX: 2010-29

Handledare: Tomas Akenine-Möller
Examinator: Michael Doggett
Startat: 2010-01-18
Företag: Intel Corporation
Presentation: 2010-06-18
ISSN: 1650-2884 / LU-CS-EX: 2010-30

Examinator: Michael Doggett
Startat: 2009-10-20
Företag: TAT - The Astonishing Tribe
Presentation: 2010-06-10
ISSN: 1650-2884 / LU-CS-EX: 2010-27

Handledare: Tomas Akenine-Möller
Examinator: Michael Doggett
Startat: 2009-09-01
Presentation: 2010-01-13
ISSN: 1650-2884 / LU-CS-EX: 2011-02

Sammanfattning:
Sparse voxel octree ray casting is an alternative rendering technique to rasteri- zation for static geometry. The hierarchical structure of the octree enables some nice properties for the ray casting method: the traversal of the octree data has a logarithmic time complexity and level of detail is handled automatically by terminating the traversal at a lower depth level. Furthermore, the octree data structure is well suited for dynamic streaming and virtualization since both the geometry and the material data can be stored in one data structure. It is possi- ble that in the future highly detailed scenes with complex geometry and unique texturing will perform better with sparse voxel octree ray casting than with ras- terization of indexed triangle meshes. On the negative side, the memory re- quirements are generally higher and the image quality is currently not as good as rasterization with triangle meshes.
In this thesis we design and implement a method for virtualized sparse voxel octree ray casting. We compare our method to other published methods and discuss the differences as well as present some ideas for future work. A novel octree traversal algorithm is also described (but not performance evaluated) for a SIMD type of instruction set.

Examinator: Michael Doggett
Startat: 2009-06-29
Företag: TAT
Presentation: 2009-12-18
ISSN: 1650-2884 / LU-CS-EX: 2010-01

Sammanfattning:
The graphical processing unit (GPU) is becoming an essential part of mobile
phones and handsets. This improves the ability of handling graphics in
handsets significantly. With this new chip it becomes possible to develop new
stunning games but also new innovative 3D GUI (Graphical User Interfaces).
Today there exist a couple of benchmarking programs targeting mobile GPUs
but all of these benchmarking tools are all focused on game performance and
not GUI performance. The aim with this master?s thesis is to develop a benchmarking
program for mobile GPUs focusing on GUI performance. We have
identified five features that are important when benchmarking a handset, from
a GUI perspective: scissoring, texture uploads, alpha blending, load times and
frame rate. Additionally, we have benchmarked five different devices using
our tool. From the test we could conclude that there were big differences in
the performance compared to the specification sheets.

Handledare: Michael Doggett
Examinator: Flavius Gruian
ISSN: 1650-2884 / LU-CS-EX: 2019-27

Handledare: Jörn Janneck
Examinator: Michael Doggett
Företag: Sony Mobile Communications AB 556615-6658
ISSN: 1650-2884 / LU-CS-EX: 2018-20