Michael J. B. Duff

Key takeaways

Michael J. B. Duff belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Michael J. B. Duff to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Michael J. B. Duff from memory before moving on to harder problems.

Reference excerpt

Michael J. B. Duff FIEE FIAPR (17 January 1933 - 29 December 2021) was a British physicist and computer scientist known for his pioneering work in early computer vision systems and image-processing hardware architectures. He was a Professor of Applied Physics at University College London (UCL), where he led research in image processing and developed early parallel computing systems for visual data analysis.

Career As a research student in the UCL Department of Physics from 1953 to 1956, Duff worked on designing a fast recycling high pressure cloud chamber. He then spent two years at EMI's infra-red group before returning to UCL as a research assistant in the Automatic Methods Group developing 'Digiscat' to measure the scattering of particle tracks in nuclear emulsions, bubble and spark chamber photographs. He became a lecturer in 1962, working in computer vision and image processing, and later led the UCL Image Processing Group. In 1967, he developed the UCPR1 image-processing computer, an early system designed for automated visual data processing. Between 1971 and 1975 he oversaw Science Research Council-funded research into parallel processing networks, collaborating with scientists at the Laboratorio di Cibernetica (the Institute of Cybernetics of the Italian National Research Council) in Naples, the University of Maryland in the US, and the University of Sao Paulo in Brazil. Further grants in 1976 and 1978 supported the development of multiprocessor vision systems known as the CLIP (Contextual Linked Image Processing) architectures, including CLIP0 through CLIP7. These systems explored parallel processing approaches to computer vision; CLIP4 was later produced commercially. Duff, appointed Professor of Applied Physics in 1985, received the British Computer Society Technical Award in the same year for contributions to computer vision systems. He was made a Fellow of the Institution of Electrical Engineers (FIEE) in 1981 and a Fellow of the International Association for Pattern Recognition (FIAPR) in 1994.

Professional activities Duff contributed to the development of British and international pattern recognition communities. He was organising secretary of the national Pattern Recognition Group, formed in 1967, which met regularly at UCL. The group became the British Pattern Recognition Association in 1976 and in 1990 merged with the Alvey Vision Club to become the British Machine Vision Association (BMVA). In 2000, he was named the first Distinguished Fellow of the BMVA. He served as Secretary of the International Association for Pattern Recognition (IAPR) for four years and was President of the IAPR from 1990 to 1992. He was editor-in-chief of the IAPR newsletter from 1999 to 2002. His wife Susan managed the IAPR secretariat from 1992 to 2004.

Publications Duff authored numerous works about image processing systems and related matters, including a book:

Duff, Michael (1983). Computing Structures for Image Processing. Academic Press. Selected other works include:

M.J.B. Duff, B.M. Jones, L.J. Townsend, "Parallel processing pattern recognition system UCPR1", in Nuclear Instruments and Methods, Volume 52, Issue 2, 1967, Pages 284-288, https://doi.org/10.1016/0029-554X(67)90232-7 M. J. B. Duff, "Review of the CLIP image processing system," in Managing Requirements Knowledge, International Workshop on, ANAHEIM, 1978, pp. 1055, doi: 10.1109/AFIPS.1978.166. Duff, M.J.B. (1981). "The Elements of Digital Picture Processing", in: Onoe, M., Preston, K., Rosenfeld, A. (eds) Real-Time Parallel Computing. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-3893-2_1 Wood, A. M., Duff, M. J. B. (Ed.), & Levialdi, S. (Ed.) (1981). "The Interaction between Hardware, Software, and Algorithms", in Languages and Architectures for Image Processing (pp. 1-11). Academic Press. Taylor, CJ., Kittler, J. (Ed.), & Duff, MJB. (Ed.) (1985). "Serial architectures for image processing". In Image Processing System Architecture (pp. 39-48). Research Studies Press. M J B Duff, "The Clip parallel processor", The Computer Bulletin, Volume 27, Issue 4, December 1985, Pages 26–27, https://doi.org/10.1093/combul/27.4.26 Duff, M.J.B. (2001). "Thirty Years of Parallel Image Processing", in: Palma, J.M.L.M., Dongarra, J., Hernández, V. (eds) Vector and Parallel Processing — VECPAR 2000. VECPAR 2000. Lecture Notes in Computer Science, vol 1981. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44942-6_35

Personal life Married Susan (nee Jones) in 1963. Daughter Charlotte and son Robert. Four grandchildren - Harry, Sam, Rachel and Sophie.

References

External links Professor Michael J. B. Duff (page on CharlotteDuff.co.uk)

Illustrations

Worked examples

Example 1 — a first encounter with Michael J. B. Duff

Start with the simplest possible case. Write down what Michael J. B. Duff claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Michael J. B. Duff before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Michael J. B. Duff ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Michael J. B. Duff

In research: Michael J. B. Duff appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Michael J. B. Duff in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Michael J. B. Duff is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1933 births, 2021 deaths, Academics of University College London, so understanding it makes those chapters shorter.
In everyday life: Look for Michael J. B. Duff outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

How to study Michael J. B. Duff in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Michael J. B. Duff means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Michael J. B. Duff out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Michael J. B. Duff in simple terms?

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Why does Michael J. B. Duff matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Michael J. B. Duff?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Michael J. B. Duff.