Concept

Subjective video quality

Related publications (142)

Full-reference objective quality metrics for video watermarking, video segmentation and 3D model watermarking

Quality assessment is a central issue in the design, implementation, and performance testing of all systems. Digital signal processing systems generally deal with visual information that are meant for human consumption. An image, a video, or a 3D model may ...

EPFL2005

Watermarked 3D Object Quality Assessment

Touradj Ebrahimi, Elisa Drelie Gelasca

This work concerns the developing of new perceptual metrics for 3D watermarking quality assessment. Any water- marking algorithm, to be effective, requires that the distortions is inevitably introduces into the watermarked media is imperceptible. This requ ...

2004

Color image quality on the Internet

Sabine Süsstrunk, Stefan Winkler

Color image quality depends on many factors, such as the initial capture system and its color image processing, compression, transmission, the output device, media and associated viewing conditions. In this paper, we are primarily concerned with color imag ...

2004

Towards Perceptually Driven Segmentation Evaluation Metrics

Touradj Ebrahimi, Elisa Drelie Gelasca

To be reliable, an automatic segmentation evaluation metric has to be validated by subjective tests. In this paper, a formal protocol for subjective tests for segmentation quality assessment is presented. The most common artifacts produced by segmentation ...

IEEE2004

Video quality evaluation for mobile applications

Frédéric Dufaux, Stefan Winkler

This paper presents the results of our quality evaluations of video sequences encoded for and transmitted over a wireless channel. We selected content, codecs, bitrates and bit error patterns representative of mobile applications and we concentrated on the ...

2003

Toward perceptual metrics for video watermark evaluation.

Touradj Ebrahimi, Elisa Drelie Gelasca

Assessing and comparing the performance of watermarking algorithms is di cult.The visibility of the watermark is an important aspect in this process.In this paper,we propose two metrics for evaluating the visual impact of video watermarks.Based on several ...

SPIE2003

A No-Reference Perceptual Blur Metric

Touradj Ebrahimi, Pina Marziliano, Frédéric Dufaux, Stefan Winkler

In this paper, we present a no-reference blur metric for images and video. The blur metric is based on the analysis of the spread of the edges in an image. Its perceptual significance is validated through subjective experiments. The novel metric is near re ...

2002

Perceptual Quality Assessment for Video Watermarking

Touradj Ebrahimi, Elisa Drelie Gelasca

The reliable evaluation of the performance of watermarking algorithms is difficult. An important aspect in this process is the assessment of the visibility of the watermark. In this paper, we address this issue and propose a methodology for evaluating the ...

EUSIPCO2002

AMISP: A Complete Content-Based MPEG-2 Error-Resilient Scheme

Pascal Frossard

We address a new error-resilient scheme for broadcast quality MPEG-2 video streams to be transmitted over lossy packet networks. A new scene-complexity adaptive mechanism, namely Adaptive MPEG-2 Information Structuring (AMIS) is introduced. AMIS modulates ...

2001

Adaptive MPEG-2 Information Structuring

Pascal Frossard

This work addresses the optimization of TV-resolution MPEG-2 video streams to be transmitted over lossy packet networks. This paper introduces a new scene-complexity adaptive mechanism, namely the Adaptive MPEG-2 Information Structuring (AMIS) mechanism. A ...

1998

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