Curriculum Vitae HANS E. KNUTSSON Profession: Professor Employment: Linkoping¨ University Nationality: Swedish Date of birth: 17 December 1950 Place of birth: Alanas,¨ Jamtlands¨ Lan¨ Civil status: Married Phone: +46 13 286727 e-mail: [email protected] Contents 1 Employment 3 2 Academic Degrees 3 3 Research Activities 3 4 Future research plans 5 5 Selected Publications 6 6 Research Grants and Contracts 7 7 Professional Activities 8 8 Industrial Activities 9 9 Teaching and Course Development 10 10 Doctorate Student Supervision 11 11 Invited Popular Science Seminars and Tutorials 12 12 Honours, Awards and TV 13 13 International Contacts 13 14 List of Publications 14 Hans Knutsson Curriculum Vitae 2 1 Employment 2 Academic Degrees Docent Oct 1992 Computer Vision, Linkoping¨ University, Sweden 2000 - present Ph.D. Dec 1982 Computer and Information Science, Linkoping¨ Uni- Professor, July 2000 - present, Linkoping¨ Uni- versity, Sweden versity, Department of Biomedical Engineering, Division of Medical Informatics. M.S. 1975 Applied Physics and Electrical Engineering, 1986 - 2000 Linkoping¨ Institute of Technology, Sweden Associate Professor, January 1986 - June 2000, (January 1986 - April 1987 50% Associate Profes- sor 50% Research Assistant), Linkoping¨ University, Department of Electrical Engineering, Division of Computer Vision. 3 Research Activities Visiting Professor, September 1998 - December 1998, Technical University of Denmark, Depart- ment of Mathematical Modelling, Section for Image 1975 - 1984 Analysis. Acting Professor, July 1990 - July 1991, De- The research during this period consisted of work partment of Electrical Engineering, Division of within the Image Processing area and can be divided Computer Vision. into two main projects. The first project, initiated by Professor Paul Edholm 1984 - 1985 was in progress from 1976 to 1979. Was here re- sponsible for the theoretical development of a new Postdoctoral Fellow, September 1984 - December 3D radiological reconstruction method termed ‘Ec- 1985, The Rockefeller University, Laboratory of tomography’ [29]. Ectomography was developed Neurobiology (Headed by Nobel Laureate Torsten in cooperation with the Division of Diagnostic Ra- Wiesel), New York. diology at the Department of Radiation Physics at the University Hospital in Linkoping,¨ [30], and The 1976 - 1984 Karolinska Institute in Stockholm, [31]. Ectomog- raphy is presently in clinical use. Research Assistant, January 1976 - September 1984, Linkoping¨ University, Department of Electri- The second project, initiated and supervised by Pro- cal Engineering, Division of Computer Vision. fessor Gosta¨ Granlund, aimed at the development of general principles and methods for image processing Image Processing Consultant (50% employment), and computer vision. The project lead to important January 1984 - September 1984 and January 1986 - knowledge concerning the type of information anal- April 1986, Context Vision AB, Linkoping.¨ (50% ysis and information representation that is necessary leave of absence from Linkoping¨ University.) for relevant and efficient processing of image infor- mation. Was here in a major way responsible for the- 1972 - 1975 oretical contributions on which future research was to be founded, [2], [27], [28], [183], [173], [172]. Teaching Assistant (Parallel to the studies) Labo- Examples of results are: - filter design for line and ratory classes in Applied electronics, Measurement edge estimation in noisy signals, - techniques for im- physics and Logical design. Linkoping¨ Institute of age enhancement and image coding. Three impor- Technology, Sweden. (A one year interruption for tant hardware designs for image processing based military service.) on these theories were later patented, [304] - [309]. Much as a consequence of the project the image processing company, ‘Context Vision’, was founded, see section 8. Hans Knutsson Curriculum Vitae 3 1984 - 1986 [1]. The book is presently used as the main text for the M.S.-level courses ‘Multidimensional Signal Was invited by Nobel Laureate Torsten Wiesel to Analysis’ and ‘Computer Vision’. join The Rockefeller University in New York as A continuation of earlier work resulted in a method Postdoctoral Fellow (see supplement A). Worked as for high resolution local frequency and bandwidth a Postdoctoral Fellow at the Neurobiology Labora- estimation. The method was cited in Science as the tory headed by Torsten Wiesel from September 1984 chosen tool for local wave-length estimation in MR to January 1986. This work aimed partly at generat- data, [133]. ing and evaluating models for computer simulation of different parts of vertebrate visual systems, partly Among other successful projects the ESPRIT - at investigating the possibilities of incorporating in- projects Vision as Process (BRA 3038) 1989-1992 formation processing principles used by biological and Vision as Process II (BRA 7108) 1992-1995 can systems in an image analysis framework [23]. De- be mentioned. In these projects methods for active veloped a new, surface charge based, model for ion vision systems were developed. A fundamental idea flow through visual receptor cells. The operational in the projects was to use visual feed-back and ad- relations predicted by the model led to a new set of vanced spatio-temporal signal processing in robotic experiments being carried out. The findings have systems to achieve more efficient and ’intelligent’ been presented in two journal publications, one of systems. When the results were presented in Brus- which in Science [24], [25]. sels in 1993, the commission became excited: ‘ ... The LiTH work on the normalized differential con- volution technique promises to be a most interest- ing development in signal and image processing ’ 1986 - 1994 [B F Buxton, B Neumann and J Wejchert, Esprit BR7108 VapII first review, Commission of the Eu- The main part of the research during this period can ropean Community, June 4 1993]. The results have be viewed as a continuance of the development of been published in the Springer ‘Basic Research Se- general theories for image processing and computer ries’ [39]-[43]. vision, [161], [170], [165], [163] [166]. Suggested and developed a novel method of repre- sentation and estimation of local structure of multi- 1994 - 2000 dimensional signals using tensors and tensor fields. [167], [154], [146]. The use of tensor represen- Initiated and directed the development of methods tations for local signal features, e.g. orientation for extraction and presentation of clinically impor- and velocity, has had far reaching consequences for tant information using a sequence of X-ray im- the continuance of the research of the group, [137], ages obtained during contrast administration, [21]. [130], [131] [129]. The project Spatio-temporal Subtraction Angiogra- Initiated and supervised the continued develop- phy was carried out in collaboration with SECTRA Secure Transmission AB in Linkoping¨ and the de- ment of tensor based methods for signal processing ¨ (NUTEK project Tensor Based Methods for Volume partment of clinical radiology at Orebro Regional and Time Sequence Processing. As a result of this Hospital. Developed methods have been patented research a method for handling irregularly sampled [303]. The projects Digital Adaptive Angiocardio- and uncertain data was developed. The method was graphy and Morphological Angiography were con- termed Normalized Convolution and is based on a tinuations of this work. The project also resulted in filtering technique for local production of a signal a PhD thesis (Hemmendorff). space metric [138], [139]. Initiated and supervised the development of meth- The tensor and normalized convolution concepts are ods for adaptive generation of efficient models and now fully integrated in the work done by the com- structures for multidimensional signal processing puter vision group and has also made an impact on systems, [140]. The approach is based on signal rep- the vision community world wide [22]. The devel- resentation using a data driven distribution of simple oped spatio-temporal filtering methods and the fun- local adaptive models [127]. Models based on Mu- damentals of the tensor representation, including a tual information and canonical correlation were number of applications, e.g. adaptive filtering, im- introduced as central concepts in the theoretical de- age/volume/sequence enhancement and local spec- velopment, [125], [121]. trum estimation, has been published as a textbook In a broader view much of the knowledge developed Hans Knutsson Curriculum Vitae 4 within the areas of information theory, signal the- Perhaps the most important recent event, were I can ory, control theory and computer science is in fact claim considerable credit, is the launching of ‘The at the core of learning and the ‘large scale’ strategy center for Medical Image Science and Visualization’ was, and still is, to integrate pertinent theory and (CMIV) at Linkoping¨ University in 2003. I was principles from these areas. It is fair to say that the one of the key people in conceiving and bringing project Neural Structures for Adaptive Feature Ex- about the launch of the center. Among other things traction in Active Visual Systems signifies the start of the center convinced Linkoping¨ University, Hospi- a new successful line of research that resulted in two tal and County to declare Medical Image Science Licentiate theses (Borga, Landelius) and two Ph.D. and Visualization a strategic area granting a total of thesis (Borga, Landelius). After reading