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Cross-depiction problem: Recognition and synthesis of photographs and artwork

Computational Visual Media 2015年第2期1卷 91-103页

作者： Peter hall Hongping Cai Qi Wu Tadeo Corradi department of computer science University of Bath School of computer science University of Adelaide

Cross-depiction is the recognition—and synthesis—of objects whether they are photographed,painted, drawn, etc. It is a significant yet underresearched problem. Emulating the remarkable human ability to recognise and depict objects in an astonishingly wide variety of depictive forms is likely to advance both the foundations and the applications of computer vision. In this paper we motivate the cross-depiction problem, explain why it is difficult, and discuss some current approaches. Our main conclusions are(i) appearance-based recognition systems tend to be over-fitted to one depiction,(ii) models that explicitly encode spatial relations between parts are more robust,and(iii) recognition and non-photorealistic synthesis are related tasks.

关键词： cross-depiction classification synthesis feature spatial layout connectivity representation

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Video Structure Analysis

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Tsinghua science and Technology 2007年第6期12卷 714-718页

作者：张松海张一飞陈韬 Peter M. hall Ralph Martin department of computer science and Technology Tsinghua University department of computer science University of Bath Bath BA2 7AY United Kingdom School of computer science Cardiff University Wales CF24 3AA United Kingdom

Video structure analysis is a basic requirement for most content-based video editing and processing systems. This paper presents a fast video structure analysis method based on image segmentation in each frame, with region matching between frames. The structure analysis decomposes the video into several moving objects, including information about their colors, positions, shapes, movements, and lifetimes. The method also supports user interactions to improve the results. The result shows that this method is fast and stable and can complete video analyzinq interactivelv.

关键词： video structure analysis video segmentation image segmentation region matching

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