IEEE Trans Image Process - A novel algorithm for view and illumination invariant image matching.

Tópicos

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Resumo

The challenges in local-feature-based image matching are variations of view and illumination. Many methods have been recently proposed to address these problems by using invariant feature detectors and distinctive descriptors. However, the matching performance is still unstable and inaccurate, particularly when large variation in view or illumination occurs. In this paper, we propose a view and illumination invariant image-matching method. We iteratively estimate the relationship of the relative view and illumination of the images, transform the view of one image to the other, and normalize their illumination for accurate matching. Our method does not aim to increase the invariance of the detector but to improve the accuracy, stability, and reliability of the matching results. The performance of matching is significantly improved and is not affected by the changes of view and illumination in a valid range. The proposed method would fail when the initial view and illumination method fails, which gives us a new sight to evaluate the traditional detectors. We propose two novel indicators for detector evaluation, namely, valid angle and valid illumination, which reflect the maximum allowable change in view and illumination, respectively. Extensive experimental results show that our method improves the traditional detector significantly, even in large variations, and the two indicators are much more distinctive.

Resumo Limpo

challeng localfeaturebas imag match variat view illumin mani method recent propos address problem use invari featur detector distinct descriptor howev match perform still unstabl inaccur particular larg variat view illumin occur paper propos view illumin invari imagematch method iter estim relationship relat view illumin imag transform view one imag normal illumin accur match method aim increas invari detector improv accuraci stabil reliabl match result perform match signific improv affect chang view illumin valid rang propos method fail initi view illumin method fail give us new sight evalu tradit detector propos two novel indic detector evalu name valid angl valid illumin reflect maximum allow chang view illumin respect extens experiment result show method improv tradit detector signific even larg variat two indic much distinct

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