Interests: visual perception, modeling, image processing, pattern recognition,
computer graphics, parallel processing, cognitive robotics
I started at the HTS Venlo (The Netherlands), a sort of polytechnic, in electrical engineering. See nostalgia (in Dutch). Then I did my MSc at the Techical University of Eindhoven in 1983. I obtained my PhD, working at the Institute for Perception Research (IPO), from the same University in 1987. I worked for 7 years at the Swiss Federal Institute of Technology in Lausanne (EPFL) before moving to the University of the Algarve in Faro, Portugal, in March 1994. I am associate professor; my teaching includes digital systems, computer architecture, computer graphics as well as image processing.
My PhD was on visual psychophysics, more specifically on the perception of brightness and contrast of spatial patterns, and the modeling of visual perception. This work later evolved into texture segmentation by using Gabor filters as a model of so-called cortical simple and complex cells, the role of Gabor phase information for an accurate detection of lines and edges in images, and then also cortical end-stopped cells for detecting keypoints (line and edge crossings, junctions). This has lead to multi-scale line, edge and keypoint representations which can be used for object categorisation and recognition.
Ongoing work focuses on developing advanced biological models for optical flow (object- and egomotion), stereo disparity, focus-of-attention and gist vision with spatial layout: which types of objects are about where in a visual scene. The goal is to integrate all models on a mobile platform with a stereo camera, also two microphones for sound-source localisation and recognition, with sequencing of atomic visuomotor actions. This is called cognitive robotics, which also integrates short- and long-term memories, egospace, and hierarchical maps for local and global navigation. If you scan the publication list you'll see that painterly rendering, i.e., translating photographs into paintings using models of perception, is another activity. This may result in research concerning colour emotions, image abstraction and visual aesthetics.
I was the coordinator of the European diatom project ADIAC. The final scientific report: Automatic Diatom Identification, H du Buf and MM Bayer (eds), World Scientific, Series in Machine Perception and Artificial Intelligence, Vol. 51, 2002. DETAILS.
I am Associate Editor of the Int J of Pattern Recognition and Artificial Intelligence: IJPRAI.
I am a member of the ISR - Institute for Systems and Robotics at the Tecnico in Lisbon, the IEEE Computer Society, as well as the Portuguese Association for Pattern Recognition APRP and the International Association for Pattern Recognition IAPR
You can get my complete CV in html (always needs a lot of updating)
For a brief description of the Vision Lab (people, equipment, projects),
You can also go directly to the project pages:
NEW 2014-2015: Hierarchical Sparse Coding
2011-2015: NeuralDynamics - A neuro-dynamic framework for cognitive robotics: scene representation, behavioural sequences, and learning
2011-2013: Blavigator - Blind Navigator - a follow-up of SmartVision
SmartVision - Active vision for the blind
MOVIDE - Modeling visual detection
EXOCET/D - Extreme ecosystems in the deep ocean
ISACS - 3D Sonar data of the seafloor
ADIAC - Diatom identification
AMOVIP - Visual information processing
SPMDlib - Parallel image processing
IP-over-SCSI - Alternative interconnects
3D modeling from video
Old Beowulf cluster at UALG: see CALHAU
As you see, a lot of old stuff. We're now having two NVIDIA TESLA boards, each with 240 cores, and NVIDIA just announced the new generation with 512 cores!
Appeared in 2002: Automatic diatom identification, Hans du Buf and Micha M. Bayer (eds), World Scientific, only US$72 (all you wanted to know about diatom identification but never dared to ask). DETAILS.
You can see my complete, updated PUBLICATION LIST with a link to most pdfs.
Prof.dr.ir. J.M.H. du Buf|
Dept. of Electronics and Computer Science - FCT,
University of Algarve,
Campus de Gambelas, 8000-810 Faro, Portugal
Email: dubuf AT ualg DOT pt