Search for dissertations about: "Josef Bigün"

Showing result 1 - 5 of 9 swedish dissertations containing the words Josef Bigün.

2. 1. Circular Symmetry Models in Image Processing

   Author : Josef Bigun; Gösta Granlund; Linköpings universitet; []
   Keywords : TECHNOLOGY; TEKNIKVETENSKAP;

   Abstract : New methods for feature extraction based on the spectral properties of local neighbourhoods is presented. The spectral behaviour of the neighbourhoods is investigated in the spatial domain using the Parseval relation applied to partial derivative pictures. READ MORE

4. 2. Local symmetry features in image processing

   Author : Josef Bigün; Olivier Fangeras; Linköpings universitet; []
   Keywords : TECHNOLOGY; TEKNIKVETENSKAP;

   Abstract : The extraction of features is necessary for all aspects of image processing and analysis such as classification, segmentation, enhancement and coding. In the course of developing models to describe images, a need arises for description of more complex structures than lines. READ MORE

5. 3. Multifont recognition System for Ethiopic Script

   Author : Yaregal Assabie Lake; Josef Bigun; Högskolan i Halmstad; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ethiopic character recognition; OCR; Multifont recognition; Amharic; Direction fields; Structural and syntactic pattern recognition; Image analysis; Bildanalys;

   Abstract : In this thesis, we present a general framework for multi-font, multi-size and multi-style Ethiopic character recognition system. We propose structural and syntactic techniques for recognition of Ethiopic characters where the graphically comnplex characters are represented by less complex primitive structures and their spatial interrelationships. READ MORE

6. 4. Algorithms for ion current based sensing of combustion variability and pressure peak position

   Author : Stefan Byttner; Josef Bigun; Högskolan i Halmstad; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SI engines; Combustion variability; Ion currents; Location of pressure peak; Exhaust Gas Recirculation; Electronic engine control;

   Abstract : .... READ MORE

7. 5. Methods for Visually Guided Robotic Systems : Matching, Tracking and Servoing

   Author : Fredrik Larsson; Michael Felsberg; Per-Erik Forssén; Josef Bigün; Linköpings universitet; []
   Keywords : TECHNOLOGY; TEKNIKVETENSKAP;

   Abstract : This thesis deals with three topics; Bayesian tracking, shape matching and visual servoing. These topics are bound together by the goal of visual control of robotic systems. The work leading to this thesis was conducted within two European projects, COSPAL and DIPLECS, both with the stated goal of developing artificial cognitive systems. READ MORE