{"id":6030,"date":"2019-02-06T14:05:05","date_gmt":"2019-02-06T14:05:05","guid":{"rendered":"https:\/\/blogs.shu.ac.uk\/c3riimpact\/?p=6030"},"modified":"2019-02-14T10:31:42","modified_gmt":"2019-02-14T10:31:42","slug":"dr-kofi-appiah","status":"publish","type":"post","link":"https:\/\/blogs.shu.ac.uk\/c3riimpact\/dr-kofi-appiah\/","title":{"rendered":"Wednesday 13 February 2019 &#8211; Lunchtime seminar with Dr Kofi Appiah (Lecturer in Computer Science)"},"content":{"rendered":"<p><strong>Title:<\/strong> Real-Time Modelling of Visual Scenes with Biological Inspiration<br \/>\n<strong>Speaker:<\/strong> <a href=\"https:\/\/www.shu.ac.uk\/about-us\/our-people\/staff-profiles\/kofi-appiah\">Dr Kofi Appiah<\/a> (Lecturer in Computer Science, <a href=\"https:\/\/www.shu.ac.uk\/\">Sheffield Hallam University<\/a>)<\/p>\n<p><strong>Abstract<\/strong><br \/>\nTargets of atypical size relative to their surrounding objects are usually missed by humans during visual search; studies show that this isn\u2019t necessarily a deficiency but a useful strategy to discount distractors. These characteristics may explain why the human visual system works very well with processing of complex information in real time and can detect moving objects whilst in motion.<\/p>\n<p>At present, the standard approach for detecting moving objects in a video scene can be achieved with either the unsupervised background subtraction approach with stationary cameras or the supervised state-of-the-art deep neural networks (DNN) with moving cameras. However, DNN guarantees the detection of only known objects with no sense of understanding the scene. The increasing popularity of using non-stationary cameras by several security agencies means that video data will have some elements of movement. Therefore, methods to reliably and robustly model video scenes with moving cameras are in great demand.<\/p>\n<p>This talk will focus on the need to model objects in a scene with inspiration from physiological experiments.<\/p>\n<p><strong>Biography<\/strong><br \/>\nKofi Appiah received a Ph.D. in computer science in 2010, after working on various embedded computer vision projects as a research assistant at Aston University (Photonics Research Group), Durham University (Computer Vision Group) and University of Essex (Embedded and Intelligent Systems Group). He is currently a lecturer at Sheffield Hallam University.<\/p>\n<p>Before joining Sheffield Hallam University in 2017, he worked at Nottingham Trent University as a lecturer from 2013. Kofi\u2019s current research focuses on the interface between embedded computer vision, machine learning and neuroscience; mainly to understand and model the biological vision system on parallel architectures like Field Programmable Gate Arrays (FPGA).<\/p>\n<p>He has published more than 50 peer-reviewed academic papers and serve as a reviewer for several core journals, such as Computer Vision and Image Understanding, IEEE Transactions on Neural Networks and Learning Systems, PLOS ONE, and more. In 2009, he won the IEEE Computational Intelligence Association Outstanding Student\u2019s Award; in 2015, he secured a fully funded PhD studentship as a director of studies; and in 2017, he received the Sheffield Hallam University Higher Education Impact Research Fellowship to work with Sundance Ltd.<\/p>\n<p><strong>1.00PM-2.00PM<\/strong><br \/>\n<strong>WEDNESDAY 13 FEBRUARY 2019<\/strong><br \/>\n<strong>CANTOR 9138 , CITY CAMPUS, SHEFFIELD HALLAM UNIVERSITY<\/strong><\/p>\n<p>See <a href=\"https:\/\/blogs.shu.ac.uk\/c3riimpact\/c3ri-seminar-series-2018-19\/?doing_wp_cron=1544094985.9233388900756835937500\">here<\/a> for details of other seminars in the series.<\/p>\n<p>All SHU staff and students are welcome to attend the C3RI Lunchtime Research Seminars. If you are from outside of the University and would like to attend a seminar, please <a href=\"mailto:c3ri@shu.ac.uk\">email <\/a>the C3RI Administrator to arrange entry.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Title: Real-Time Modelling of Visual Scenes with Biological Inspiration Speaker: Dr Kofi Appiah (Lecturer in Computer Science, Sheffield Hallam University) Abstract Targets of atypical size relative to their surrounding objects are usually missed by humans during visual search; studies show that this isn\u2019t necessarily a deficiency but a useful strategy to discount distractors. These characteristics may explain why the human [&#8230;]<\/p>\n","protected":false},"author":9742,"featured_media":6035,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"wds_primary_category":0,"footnotes":"","jetpack_post_was_ever_published":false,"_links_to":"","_links_to_target":""},"categories":[103],"tags":[977,6,976,975,978],"class_list":["post-6030","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-events","tag-biological-inspiration","tag-communication-and-computing-research-centre","tag-dnn","tag-kofi-appiah","tag-visual-scenes"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/blogs.shu.ac.uk\/c3riimpact\/files\/2019\/02\/2019-02-13-Appiah-seminar.jpg?fit=860%2C260&ssl=1","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8oFHo-1zg","jetpack-related-posts":[{"id":2977,"url":"https:\/\/blogs.shu.ac.uk\/c3riimpact\/advanced-visual-methods-summer-school-manchester\/","url_meta":{"origin":6030,"position":0},"title":"Dr Eve Stirling, Dr Becky Shaw and Mel Levick-Parkin to present at the Advanced Visual Methods Summer School in Manchester &#8211; 28\/29 September 2017","author":"Ian Braddick","date":"21\/09\/2017","format":false,"excerpt":"SHU staff members Dr Eve Stirling, Dr Becky Shaw and Mel Levick-Parkin will present at Advanced Visual Methods Summer School at Z Arts Manchester taking place between 28 and 29 September 2017. The summer school will provide practical and hands on experience of a range of visual methods that participants\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/blogs.shu.ac.uk\/c3riimpact\/category\/news\/"},"img":{"alt_text":"Composite banner image of Visual Methods Summer School (Manchester) and accompanying exhibition 'Process Made'","src":"https:\/\/i0.wp.com\/blogs.shu.ac.uk\/c3riimpact\/files\/2017\/09\/STIRLING-SHAW-PARKIN-2017-09-Summer-School.jpg?fit=890%2C290&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/blogs.shu.ac.uk\/c3riimpact\/files\/2017\/09\/STIRLING-SHAW-PARKIN-2017-09-Summer-School.jpg?fit=890%2C290&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/blogs.shu.ac.uk\/c3riimpact\/files\/2017\/09\/STIRLING-SHAW-PARKIN-2017-09-Summer-School.jpg?fit=890%2C290&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/blogs.shu.ac.uk\/c3riimpact\/files\/2017\/09\/STIRLING-SHAW-PARKIN-2017-09-Summer-School.jpg?fit=890%2C290&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":3739,"url":"https:\/\/blogs.shu.ac.uk\/c3riimpact\/tc-mccormack-immense-ventriloquism-berlin\/","url_meta":{"origin":6030,"position":1},"title":"&#8216;The Immense Ventriloquism&#8217; &#8211; TC McCormack&#8217;s exhibition opens in Berlin &#8211; Friday 01 December","author":"Ian Braddick","date":"30\/11\/2017","format":false,"excerpt":"TC McCormack, Senior Lecturer of Fine Art at Sheffield Hallam University, will be opening an exhibition titled The Immense Ventriloquism this Friday in Berlin. Taking place at nationalmuseum, the exhibition considers how our man-made structures exist both in and out of time, and how the course of history continually reappraises\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/blogs.shu.ac.uk\/c3riimpact\/category\/news\/"},"img":{"alt_text":"Image courtesy of TC McCormack","src":"https:\/\/i0.wp.com\/blogs.shu.ac.uk\/c3riimpact\/files\/2017\/11\/MCCORMACK-2017-12-Berlin-exhibition-2.jpg?fit=890%2C290&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/blogs.shu.ac.uk\/c3riimpact\/files\/2017\/11\/MCCORMACK-2017-12-Berlin-exhibition-2.jpg?fit=890%2C290&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/blogs.shu.ac.uk\/c3riimpact\/files\/2017\/11\/MCCORMACK-2017-12-Berlin-exhibition-2.jpg?fit=890%2C290&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/blogs.shu.ac.uk\/c3riimpact\/files\/2017\/11\/MCCORMACK-2017-12-Berlin-exhibition-2.jpg?fit=890%2C290&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":3718,"url":"https:\/\/blogs.shu.ac.uk\/c3riimpact\/lunchtime-seminar-uta-hinrichs\/","url_meta":{"origin":6030,"position":2},"title":"Tuesday 05 December 2017 &#8211; Lunchtime Seminar with Dr Uta Hinrichs (University of St Andrews)","author":"Ian Braddick","date":"22\/11\/2017","format":false,"excerpt":"Speaker: Dr Uta Hinrichs Title: Visualisation as a Process Hosted by: Professor Luigina Ciolfi Building visualisations has become a process that a wide variety of people engage in independent of their background. 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