Computer Vision – ECCV 2012: 12th European Conference on by Aamer Zaheer, Maheen Rashid, Sohaib Khan (auth.), Andrew

By Aamer Zaheer, Maheen Rashid, Sohaib Khan (auth.), Andrew Fitzgibbon, Svetlana Lazebnik, Pietro Perona, Yoichi Sato, Cordelia Schmid (eds.)

The seven-volume set comprising LNCS volumes 7572-7578 constitutes the refereed court cases of the twelfth eu convention on computing device imaginative and prescient, ECCV 2012, held in Florence, Italy, in October 2012. The 408 revised papers offered have been conscientiously reviewed and chosen from 1437 submissions. The papers are prepared in topical sections on geometry, second and 3D shapes, 3D reconstruction, visible acceptance and class, visible good points and photo matching, visible tracking: motion and actions, types, optimisation, studying, visible monitoring and photograph registration, photometry: lighting fixtures and color, and photo segmentation.

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Additional info for Computer Vision – ECCV 2012: 12th European Conference on Computer Vision, Florence, Italy, October 7-13, 2012, Proceedings, Part VI

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Fig. 1. A block diagram describes the proposed approach parameters. Fitting a model to a new image is generally accomplished by maximizing the posterior of the model parameters. This posterior has a complex shape and is defined over a high dimensional space, which makes it impossible to find posterior global maximum. Therefore, most algorithms are concerned with the efficient local maximization of the posterior starting from an initial guess. In some applications, the initial guess can be obtained from a face detector [18], but if the face is non-frontal, or a highly precise fit is required then it is necessary to start with a better initialization.

After that LBP signature is extracted from patches around these facial features. This signature not only depends on the texture but it also depends on the shape since the signature is taken around the facial features. Finally, the probe pose is estimated [7], then its signature is compared with the signatures of the gallery subset, which has the closest pose to prob pose. It is worth mentioning that it takes around one sec per synthesized image generation. , it needs around half an hour for 2000 subjects gallery).

The detection of each facial feature is independent and it ignores the relation among these facial feature points. Therefore, researchers filter the output of landmarks detector by a shape model. Most of the existing works model the relation between the facial features as gaussian model. In [20], the facial features’ relative positions were modeled by a pairwise reinforcement of feature response instead of Gaussian distribution. al [21] proposed using a Markov Random Field (MRF) as a shape model.

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