Publications by Philippe Hanhart

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Over the last decades, several technological revolutions have impacted the television industry, such as the shifts from black & white to color and from standard to high-definition. Nevertheless, further considerable improvements can still be achieved to pr ...

In this paper, the analysis of a subjective quality experiment consisting in assessing the quality of free-viewpoint video sequences generated from decompressed depth data is presented. In the absence of a dedicated subjective assessment protocol for the e ...

The Bjontegaard model is widely used to calculate the compression efficiency between different codecs. However, this model is not sufficient to investigate the impact on quality of the interaction of the base and enhancement layer bit rates when comparing ...

When a stereo pair is formed from a decoded view and a synthesized view, it is unclear how the overall quality of the stereo pair should be assessed through objective quality metrics. In this paper, this problem is addressed considering a 3D video represen ...

The Quality of Experience (QoE) provided by autostereoscopic 3D displays strongly depends on the user position. For an optimal image quality, the observer should be located at one of the relevant positions, called sweet spots, where artifacts reducing the ...

Video consumption over Internet has increased significantly over the recent years and occupies the majority of the overall data traffic. To decrease the load on the Internet infrastructure and reduce bandwidth taken by video, higher efficiency video codecs ...

Standards play an important role in providing a common set of specifications and allowing inter-operability between devices and systems. Until recently, no standard for High Dynamic Range (HDR) image coding had been adopted by the market, and HDR imaging r ...

Understanding Quality of Experience (QoE) in various multimedia contents is still challenging. In this paper, we investigate the way QoE affects brain oscillations captured by electroencephalography (EEG). In particular, sixteen subjects watched 2D and 3D ...

Crowdsourcing is becoming a popular cost effective alternative to lab-based evaluations for subjective quality assessment. However, crowd-based evaluations are constrained by the limited availability of display devices used by typical online workers, which ...

High bit depth data acquisition and manipulation have been largely studied at the academic level over the last 15 years and are rapidly attracting interest at the industrial level. An example of the increasing interest for high-dynamic range (HDR) imaging ...

The procedures commonly used to evaluate the performance of objective quality metrics rely on ground truth mean opinion scores and associated confidence intervals, which are usually obtained via direct scaling methods. However, indirect scaling methods, su ...

Modern cameras can be used to capture high dynamic range (HDR) images by taking multiple low dynamic range (LDR) pictures at different exposure settings. However, DSLR cameras often store the multiple exposure pictures, which increases storage requirements ...

The performance of objective quality metrics for high-definition (HD) video sequences is well studied, but little is known about their performance for ultra-high definition (UHD) video sequences. This paper analyzes the performance of several common object ...

Multiview autostereoscopic displays are considered as the future of 3DTV. However, these displays suffer from a high level of crosstalk, which negatively impacts quality of experience (QoE). In this paper, we propose a system to improve 3D QoE on multiview ...

Recent advances in high dynamic range (HDR) capture and display technologies have attracted a lot of interest from scientific, professional, and artistic communities. As any technology, the evaluation of HDR systems in terms of quality of experience is ess ...

As immersive technologies target to provide higher quality of multimedia experiences, it is important to understand the quality of experience (QoE) perceived by users from various multimedia rendering schemes, in order to design and optimize human-centric ...

This paper reports the details and results of a subjective and objective quality evaluation assessing responses to an MPEG call for evidence (CfE) on high dynamic range (HDR) and wide color gamut video coding. Five HDR video contents, compressed at four bi ...

The main objective of this paper is to verify test methodologies for assessment high dynamic range (HDR) video. To achieve this, a next generation HDR monitor by Dolby Laboratories was used to display professionally produced HDR content, including some sce ...

The popularity of the crowdsourcing for performing various tasks online increased significantly in the past few years. The low cost and flexibility of crowdsourcing, in particular, attracted researchers in the field of subjective multimedia evaluations and ...

Philippe Hanhart

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Quality of Experience in Immersive Video Technologies

A quality assessment protocol for Free-viewpoint video sequences synthesized from decompressed depth data

Rate-Distortion Evaluation for Two-Layer Coding Systems

Quality Assessment of Asymmetric Stereo Pair Formed From Decoded and Synthesized Views

Subjective evaluation of an active crosstalk reduction system for mobile autostereoscopic displays

Quality Evaluation of HEVC and VP9 Video Compression in Real-Time Applications

Overview and Evaluation of the JPEG XT HDR Image Compression Standard

EEG correlates during video quality perception

Crowd-based quality assessment of multiview video plus depth coding

JPEG XT: A Compression Standard for HDR and WCG Images [Standards in a Nutshell]

How to Benchmark Objective Quality Metrics from Paired Comparison Data?

Evaluation of JPEG XT for high dynamic range cameras

Quality Assessment of a Stereo Pair Formed From Decoded and Synthesized Views Using Objective Metrics

Benchmarking of quality metrics on ultra-high definition video sequences

Active crosstalk reduction system for multiview autostereoscopic displays

Benchmarking of objective quality metrics for HDR image quality assessment

Modeling Immersive Media Experiences by Sensing Impact on Subjects

Subjective and Objective Evaluation of HDR Video Coding Technologies

Subjective Quality Evaluation Of High Dynamic Range Video And Display For Future TV

Survey of Web-based Crowdsourcing Frameworks for Subjective Quality Assessment