Distributed video coding based on sampling of signals with finite rate of innovation

Chaisinthop, Varit; Dragotti, Pier Luigi

doi:10.1117/12.733234

Cited by 2 publications

(1 citation statement)

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“…If the background is uniform only in the neighborhood of the object of interest, then background subtraction and segmentation techniques can be used to extract the objects of interest from the background and treat each object as if the background was globally uniform. This was shown in [8].…”

Section: B Registration Methods and Simulation Resultsmentioning

confidence: 99%

Exact Feature Extraction Using Finite Rate of Innovation Principles With an Application to Image Super-Resolution

Baboulaz

Dragotti

2009

IEEE Trans. on Image Process.

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Abstract-The accurate registration of multiview images is of central importance in many advanced image processing applications. Image super-resolution, for example, is a typical application where the quality of the super-resolved image is degrading as registration errors increase. Popular registration methods are often based on features extracted from the acquired images. The accuracy of the registration is in this case directly related to the number of extracted features and to the precision at which the features are located: images are best registered when many features are found with a good precision. However, in low-resolution images, only a few features can be extracted and often with a poor precision. By taking a sampling perspective, we propose in this paper new methods for extracting features in low-resolution images in order to develop efficient registration techniques. We consider, in particular, the sampling theory of signals with finite rate of innovation [10] and show that some features of interest for registration can be retrieved perfectly in this framework, thus allowing an exact registration. We also demonstrate through simulations that the sampling model which enables the use of finite rate of innovation principles is well suited for modeling the acquisition of images by a camera. Simulations of image registration and image superresolution of artificially sampled images are first presented, analyzed and compared to traditional techniques. We finally present favorable experimental results of super-resolution of real images acquired by a digital camera available on the market.

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Section: B Registration Methods and Simulation Resultsmentioning

confidence: 99%