The conception and implementation of a local HDR fusion algorithm depending on contrast and luminosity parameters

Amine Besrour; Fatma Abdelkefi; Mohamed Siala; Hichem Snoussi

doi:10.1117/12.2188178

9 September 2015 The conception and implementation of a local HDR fusion algorithm depending on contrast and luminosity parameters

Amine Besrour, Fatma Abdelkefi, Mohamed Siala, Hichem Snoussi

Author Affiliations +

Proceedings Volume 9598, Optics and Photonics for Information Processing IX; 95980Z (2015) https://doi.org/10.1117/12.2188178
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

Nowadays, the high dynamic range (HDR) imaging represents the subject of the most researches. The major problem lies in the implementation of the best algorithm to acquire the best video quality. In fact, the major constraint is to conceive an optimal fusion which must meet the rapid movement of video frames. The implemented merging algorithms were not quick enough to reconstitute the HDR video. In this paper, we detail each of the previous existing works before detailing our algorithm and presenting results from the acquired HDR images, tone mapped with various techniques. Our proposed algorithm guarantees a more enhanced and faster solution compared to the existing ones. In fact, it has the ability to calculate the saturation matrix related to the saturation rate of the neighboring pixels. The computed coefficients are affected respectively to each picture from the tested ones. This analysis provides faster and efficient results in terms of quality and brightness. The originality of our work remains on its processing method including the pixels saturation in the totality of the captured pictures and their combination in order to obtain the best pictures illustrating all the possible details. These parameters are computed for each zone depending on the contrast and the luminosity of the current pixel and its neighboring. The final HDR image’s coefficients are calculated dynamically ensuring the best image quality equilibrating the brightness and contrast values and making the perfect final image.

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Amine Besrour, Fatma Abdelkefi, Mohamed Siala, and Hichem Snoussi "The conception and implementation of a local HDR fusion algorithm depending on contrast and luminosity parameters", Proc. SPIE 9598, Optics and Photonics for Information Processing IX, 95980Z (9 September 2015); https://doi.org/10.1117/12.2188178

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KEYWORDS

High dynamic range imaging

Image fusion

Cameras

Sensors

Image processing

Video

Image quality

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