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Visual Media Production (CVMP 2008), 5th European Conference on

Date 26-27 Nov. 2008

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Displaying Results 1 - 16 of 16
  • Sketching Islands for a Game Environment

    Publication Year: 2008 , Page(s): 1 - 10
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1327 KB)  

    We present a simple interface for sketching height- maps of islands. This interface is close to the ideal of a modeless single-tool interface, with all of its major operations being controlled by a single device (pen or single-button mouse). As such is easy to use even for novice users and requires no technical knowledge. View full abstract»

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  • Low Latency Mitigation of Rain Induced Noise in Images

    Publication Year: 2008 , Page(s): 1 - 4
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (4662 KB)  

    Sometimes, weather conditions, particularly rain and snow, makes it difficult to obtain clear image or videos. Partial occlusion by moving rain drops makes it difficult to process such videos for example in object recognition and feature tracking. The difficulty further increases in presence of camera and objects motion. Motion analysis is typically performed to avoid distortions in camera and obj... View full abstract»

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  • Illumination and View Invariant Face Detection and Recognition in Images with Complex Background

    Publication Year: 2008 , Page(s): 1 - 9
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (7003 KB)  

    This paper presents a novel approach for detection and recognition of multi-view faces whose location is unknown and the illumination conditions are varying. The illumination is a big problem in the face detection and recognition aspects. Two completely different methods are proposed for face detection in this paper. Our proposed methods do not use the skin colour information for face detection. T... View full abstract»

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  • Illumination Invariant Face Tracking and Recognition

    Publication Year: 2008 , Page(s): 1 - 6
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (5015 KB)  

    Face tracking and recognition are not easy because the face is a non-rigid object. The main reasons for the failure to track and recognize faces are changes of pose and environmental illumination. In this paper, we propose a preprocessing method that compensates for illumination variations and a nonlinear manifold framework to deal with pose changes in the face. For video-based face recognition sy... View full abstract»

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  • The Good, the Bad and the Ugly: Attractive Portraits from Video Sequences

    Publication Year: 2008 , Page(s): 1 - 4
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (4800 KB)  

    Taking a portrait picture is frequently an uncomfortable task for the photographed person, and the resulting shots are in many cases unnatural and unsatisfactory. A common solution is to take a large number of pictures and then select the favorite ones. Instead of a manual selection, an automatic selection of good portraits from a captured video sequence can increase the chances to obtain a pleasi... View full abstract»

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  • Environment Matting into Photographs using Coloured RTcams

    Publication Year: 2008 , Page(s): 1 - 8
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (7204 KB)  

    There has been continuing interest in using environment matting to capture the real-world's reflection and refraction from a foreground object. Environment matting require a calibrated warp, which is often defined non-parametrically. Although this is a powerful approach it suffers from two basic limitations: (i) there is a "blind spot" that cannot be a calibrated; (ii) a slight change in the objec... View full abstract»

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  • Example-based Reflectance Estimation for Capturing Relightable Models of People

    Publication Year: 2008 , Page(s): 1 - 10
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (4863 KB)  

    We present a new approach to reflectance estimation for dynamic scenes. Non-parametric image statistics are used to transfer reflectance properties from a static example set to a dynamic image sequence. The approach allows reflectance estimation for surface materials with inhomogeneous appearance, such as those which commonly occur with patterned or textured clothing. Material reflectance properti... View full abstract»

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  • Video Matting Using Motion Extended GrabCut

    Publication Year: 2008 , Page(s): 1 - 9
    Cited by:  Patents (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1089 KB)  

    GrabCut is perhaps the most powerful semi-automatic algorithm for matting presented to date. In its existing form, it is not suitable for video object segmentation. This paper considers major extensions that make it suitable for this purpose. A method for initialising matting without user intervention is presented, followed by a more robust data model using a mean shift algorithm to control model ... View full abstract»

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  • Informational Retrieval Assisted Object Segmentation in Video

    Publication Year: 2008 , Page(s): 1 - 10
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (4969 KB)  

    Accurate object segmentation in video is difficult. The dynamic nature of the medium causes drifts in the feature spaces traditionally used in segmentation of objects in still images. For example, colour distributions, shape models and motion tracks of objects typically vary and /or deteriorate over time, resulting in the need to explicitly correct the object by hand in every few frames. The prese... View full abstract»

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  • Effects of camera aperture correction on keying of broadcast video

    Publication Year: 2008 , Page(s): 1 - 5
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (3576 KB)  

    This contribution discusses the effects of camera aperture correction in broadcast video on colour-based keying. The aperture correction is used to 'sharpen' an image and is one element that distinguishes the 'TV-look' from 'film-look'. If this sharpening is done excessively, as is the case in many TV productions then this significantly shifts the colours around object boundaries with high contras... View full abstract»

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  • Merging of Feature Tracks for Camera Motion Estimation from Video

    Publication Year: 2008 , Page(s): 1 - 8
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (3190 KB)  

    In this paper different application scenarios are presented for which the merging of unconnected feature point tracks is essential for successful camera motion estimation and 3D reconstruction from video. The first application is drift removal for sequential camera motion estimation of long sequences. The state-of-the-art in drift removal is to apply a RANSAC approach to find unconnected feature p... View full abstract»

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  • Automatic and Robust Semantic Registration of 3D Head Scans

    Publication Year: 2008 , Page(s): 1 - 7
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (8047 KB)  

    A robust and fully automatic algorithm for semantic registration of laser scans of human faces is introduced. The scans are converted into a new semantically annotated topology such that topologically equivalent vertices have the same meaning. The algorithm works in three steps. First, landmark points are placed using a multi-stage variant of the iterative closest points scheme and an annotated re... View full abstract»

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  • A Novel Framework for Semantic Annotation of Soccer Sports Video Sequences

    Publication Year: 2008 , Page(s): 1 - 9
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (6132 KB)  

    A novel framework is presented for semantic labeling of video clips, automatically segmented from broadcast video of soccer (football) games, as highlights and excitement clips etc. The proposed framework provides a generalizable method for linking low-level video features with high- level semantic concepts defined in a commonly understood sports lexicon. Three important contributions are made to ... View full abstract»

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  • An Empirical Study of Non-Rigid Surface Feature Matching

    Publication Year: 2008 , Page(s): 1 - 10
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (6619 KB)  

    This paper presents an empirical study of affine invariant feature detectors to perform matching on video sequences of people with non-rigid surface deformation. Recent advances in feature detection and wide baseline matching have focused on static scenes. Video frames of human movement captures highly non-rigid deformation such as loose hair, cloth creases, skin stretching and free flowing clothi... View full abstract»

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  • 3DPresence -A System Concept for Multi-User and Multi-Party Immersive 3D Videoconferencing

    Publication Year: 2008 , Page(s): 1 - 8
    Cited by:  Papers (6)  |  Patents (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1685 KB)  

    Traditional set-top camera video-conferencing systems still fail to meet the 'telepresence challenge' of providing a viable alternative for physical business travel, which is nowadays characterized by unacceptable delays, costs, inconvenience, and an increasingly large ecological footprint. Even recent high-end commercial solutions, while partially removing some of these traditional shortcomings, ... View full abstract»

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  • Increasing Realism and Supporting Content Planning for Dynamic Scenes in a Mixed Reality System incorporating a Time-of-Flight Camera

    Publication Year: 2008 , Page(s): 1 - 10
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1609 KB)  

    Mixed reality is the combination of real and virtual scene content. Besides correct alignment of the two modalities and correct occlusion handling the core issues to be tackled are the degree of realism and the ease of use. For a convincing perception correct occlusion handling and shadowing is mandatory. We present a system for mixed reality applications which features enhanced realism through au... View full abstract»

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