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Ahmet Oğuz Akyüz

Department of Computer Engineering
Scopus Author ID
Deep Joint Deinterlacing and Denoising for Single Shot Dual-ISO HDR Reconstruction
Cogalan, Ugur; Akyüz, Ahmet Oğuz (Institute of Electrical and Electronics Engineers (IEEE), 2020-01-01)
HDR images have traditionally been obtained by merging multiple exposures each captured with a different exposure time. However, this approach entails longer capture times and necessitates deghosting if the captured scene ...
Automatic saturation correction for dynamic range management algorithms
Artusi, Alessandro; POULİ, Tania; BANTERLE, Francesco; Akyüz, Ahmet Oğuz (2018-04-01)
High dynamic range (HDR) images require tone reproduction to match the range of values to the capabilities of a display. For computational reasons and given the absence of fully calibrated imagery, rudimentary color reprod...
A Reliable and Reversible Image Privacy Protection Based on False Colors
ÇİFTÇİ, Serdar; Akyüz, Ahmet Oğuz; Ebrahimi, Touradj (2018-01-01)
Protection of visual privacy has become an indispensable component of video surveillance systems due to pervasive use of video cameras for surveillance purposes. In this paper, we propose two fully reversible privacy prote...
Privacy protection of tone-mapped HDR images using false colours
ÇİFTÇİ, Serdar; Akyüz, Ahmet Oğuz; PİNHEİRO, Antonio M. G.; Ebrahimi, Touradj (2017-12-01)
High dynamic range (HDR) imaging has been developed for improved visual representation by capturing a wide range of luminance values. Owing to its properties, HDR content might lead to a larger privacy intrusion, requiring...
Practical HDR A Simple and Effective Method for Merging High Dynamic Range Videos
Akcora, Ezgi; Banterle, Francesco; Corsini, Massimiliano; Akyüz, Ahmet Oğuz; Scopigno, Roberto (2016-12-12)
We introduce a novel algorithm for obtaining High Dynamic Range (HDR) videos from Standard Dynamic Range (SDR) videos with varying shutter speed or ISO per frame. This capturing technique represents today one of the most p...
A Proposed Methodology for Evaluating HDR False Color Maps
Akyüz, Ahmet Oğuz; KAYA, Osman (Association for Computing Machinery (ACM), 2016-08-01)
Color mapping, which involves assigning colors to the individual elements of an underlying data distribution, is a commonly used method for data visualization. Although color maps are used in many disciplines and for a var...
A Gamut-Mapping Framework for Color-Accurate Reproduction of HDR Images
SİKUDOVA, Elena; POULİ, Tania; ARTUSİ, Alessandro; Akyüz, Ahmet Oğuz; BANTERLE, Francesco; Mazlumoglu, Zeynep Miray; REİNHARD, Erik (2016-07-01)
An integrated gamut- and tone-management framework for color-accurate reproduction of high dynamic range images can prevent hue and luminance shifts while taking gamut boundaries into consideration. The proposed approach i...
An Objective Deghosting Quality Metric for HDR Images
TURSUN, Okan Tarhan; Akyüz, Ahmet Oğuz; Erdem, Aykut; Erdem, Erkut (2016-05-01)
Reconstructing high dynamic range (HDR) images of a complex scene involving moving objects and dynamic backgrounds is prone to artifacts. A large number of methods have been proposed that attempt to alleviate these artifac...
High dynamic range imaging pipeline on the GPU
Akyüz, Ahmet Oğuz (2015-06-01)
Use of high dynamic range (HDR) images and video in image processing and computer graphics applications is rapidly gaining popularity. However, creating and displaying high resolution HDR content on CPUs is a time consumin...
The State of the Art in HDR Deghosting: A Survey and Evaluation
Tursun, Okan Tarhan; Akyüz, Ahmet Oğuz; Erdem, Aykut; Erdem, Erkut (2015-05-01)
Obtaining a high quality high dynamic range (HDR) image in the presence of camera and object movement has been a long-standing challenge. Many methods, known as HDR deghosting algorithms, have been developed over the past ...