Special Report, Americas, US

[AprpdlNuh]

We propose a patch-based method for the simultaneous denoising. Fusion of a sequence of RAW multi-exposed images. A spatio-temporal criterion is used to select similar patches along the sequence, and a weighted principal component analysis permits to both denoise and fuse the multi exposed data. The overall strategy permits to denoise and fuse the set of images without the need of recovering each denoised image in the multi-exposure set, leading to a very efficient procedure. Several experiments show that the proposed method permits to obtain state-of-the-art fusion results with real RAW data. Conventional cameras are not able to capture in one shot the whole range of natural light present in a scene. As a consequence, dark or bright regions might appear completely saturated. A High Dynamic Range (HDR) image has a range of luminosity between the brightest area and the darkest area larger than usual. High Dynamic Range imaging refers to the set of methods and techniques that permit to increase the dynamic range of images and videos.




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