Rendering of HDR content on LDR displays: an objective approach
TLDR
This work investigates into a new objective method for TMO parameters optimization based on quantification of contrast reversal and naturalness that does not require any prior knowledge about the input HDR image and works independently on the used TMO.Abstract:
Dynamic range compression (or tone mapping) of HDR content is an essential step towards rendering it on traditional LDR displays in a meaningful way. This is however non-trivial and one of the reasons is that tone mapping operators (TMOs) usually need content-specific parameters to achieve the said goal. While subjective TMO parameter adjustment is the most accurate, it may not be easily deployable in many practical applications. Its subjective nature can also influence the comparison of different operators. Thus, there is a need for objective TMO parameter selection to automate the rendering process. To that end, we investigate into a new objective method for TMO parameters optimization. Our method is based on quantification of contrast reversal and naturalness. As an important advantage, it does not require any prior knowledge about the input HDR image and works independently on the used TMO. Experimental results using a variety of HDR images and several popular TMOs demonstrate the value of our method in comparison to default TMO parameter settings.read more
Citations
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Journal ArticleDOI
Preference of Experience in Image Tone-Mapping: Dataset and Framework for Objective Measures Comparison
TL;DR: A subjective experiment attempting to determine users’ preference with respect to these two types of content in two different viewing scenarios—with and without the HDR reference shows that the absence of the reference can significantly influence the subjects' preferences for the natural images, while no significant impact has been found in the case of the synthetic images.
Proceedings ArticleDOI
Influence of HDR reference on observers preference in tone-mapped images evaluation
TL;DR: Whether the preference of the participating subjects is significantly affected by the presence of the original high dynamic range (HDR) image displayed on the HDR screen or if they can obtain equivalent results from the test without the reference is determined.
Journal ArticleDOI
FFTMI: Features Fusion for Natural Tone-Mapped Images Quality Evaluation
TL;DR: A new objective metric for natural tone-mapped images is proposed, based on a fusion of several perceptually relevant features that have been carefully selected using an appropriate feature selection procedure, and shown to significantly outperform the tested metrics.
Book ChapterDOI
HDR Image and Video Quality Prediction
Manish Narwaria,Patrick Le Callet,Giuseppe Valenzise,Francesca De Simone,Frederic Dufaux,Rafal Mantiuk +5 more
TL;DR: This chapter deals with objective quality assessment of HDR content and elaborates on the issues and challenges that arise, and focuses on full-reference HDR metrics which take as input two HDR signals (one of them is always assumed to be the reference).
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