23,979 Hits in 5.7 sec

A structural method for quality evaluation of desynchronization attacks in image watermarking

Angela D'Angelo, Mauro Barni
2008 2008 IEEE 10th Workshop on Multimedia Signal Processing  
The proposed approach is a full-reference image quality metric focusing on the problem of local geometric attacks and it is based on the use of Gabor filters.  ...  The goal of this work is to design an objective measurement scheme for geometric distortions in order to investigate the perceptual quality impact of geometric attacks on the watermarked images.  ...  ACKNOWLEDGMENT The research described in this paper has been partially funded by the Italian Ministry of Research and Education under FIRB project no. RBIN04AC9W.  ... 
doi:10.1109/mmsp.2008.4665175 dblp:conf/mmsp/DAngeloB08 fatcat:5gaweqjeo5gsbdfezpuwgksp6e

A psychovisual experiment on the use of Gibbs potential for the quality assessment of geometrically distorted images

Angela D'Angelo, Mirco Pacitto, Mauro Barni, Bernice E. Rogowitz, Thrasyvoulos N. Pappas
2008 Human Vision and Electronic Imaging XIII  
As a consequence, there is a lack of objective visual quality measures for this class of distortions.  ...  In this paper we propose a method of objectively assessing the perceptual quality of geometrically distorted images. Our approach is based on the theory of Markov Random Fields.  ...  and for system optimization.  ... 
doi:10.1117/12.765879 dblp:conf/hvei/DAngeloPB08 fatcat:6kzztx4xozgu5mfzdta7o6khwe

Introduction to the Issue on Visual Media Quality Assessment

Lina J. Karam, Touradj Ebrahimi, Sheila S. Hemami, Thrasyvoulos N. Pappas, Robert J. Safranek, Zhou Wang, Andrew B. Watson
2009 IEEE Journal on Selected Topics in Signal Processing  
quality scale, with or without the presence of a reference visual medium, and based on specified criteria and conditions.  ...  The authors present a full-reference objective metric for video segmentation quality evaluation.  ...  While at Bell Labs, he worked on developing visual models for image and video quality evaluation and compression. He was also a member of the team that helped develop the U.S. HDTV standard.  ... 
doi:10.1109/jstsp.2009.2015485 fatcat:zpkgg3vu5beprk6vehnapthxau

A Hybrid Image Quality Measure for Automatic Image Quality Assessment [chapter]

Atif Bin Mansoor, Maaz Haider, Ajmal S. Mian, Shoab A. Khan
2009 Lecture Notes in Computer Science  
First we undertook time consuming human experiments to subjectively evaluate a given set of training images, and resultantly formed a Human Perception Curve (HPC).  ...  four considered metrics.  ...  Chandler and Hemami proposed a two staged wavelet based visual signal to noise ratio based on near-threshold and supra-threshold properties of human vision [18] .  ... 
doi:10.1007/978-3-642-02230-2_10 fatcat:sxlavbdnubasphu6azkra7kali

Comparative Analysis of Software Quality Models for the Evaluation of Virtual Reality Contents

Minkyu Choi, JungYoon Kim
2020 Journal of Digital Art Engineering and Multimedia  
Quality evaluation may also guarantee safety and comfortability with VR components and user interfaces which are designed for VR based cognition training systems.  ...  Software quality models will be analyzed attempting to address quality issues for VR contents and its environment in order to guarantee effective diagnosis and increase its usability and accessibility.  ...  It allows for an immersive performance of an individuals sensory perceptions such as hearing, touch, smell, vision, taste, and kinematics [8] .  ... 
doi:10.29056/jdaem.2020.09.09 fatcat:lx7rvynyrnh47kee3bpt3z4qra

Image Retargeting Quality Assessment

Yong-Jin Liu, Xi Luo, Yu-Ming Xuan, Wen-Feng Chen, Xiao-Lan Fu
2011 Computer graphics forum (Print)  
To compare image quality by different retargeting methods fast and reliably, an objective metric simulating the human vision system (HVS) is presented in this paper.  ...  The objective assessment metric is then based on both global geometric structures and local pixel correspondence. To evaluate color images, CIE L * a * b * color space is utilized.  ...  Zhang for implementing other retargeting methods in Experiment 3.  ... 
doi:10.1111/j.1467-8659.2011.01881.x fatcat:u2akyr6qsvgwflbaqzuct2zyvi

Quality Assessment of Stereoscopic Images

Alexandre Benoit, Patrick Le Callet, Patrizio Campisi, Romain Cousseau
2008 EURASIP Journal on Image and Video Processing  
The proposed metric is evaluated using the SAMVIQ methodology for subjective assessment.  ...  Therefore, in this paper, we review the different issues related to 3D visualization, and we propose a quality metric for the assessment of stereopairs using the fusion of 2D quality metrics and of the  ...  ACKNOWLEDGMENT This work was supported by FuturIm@ge project within the "Media and Networks" French cluster.  ... 
doi:10.1155/2008/659024 fatcat:hzykxqxo6rdnhag5z5igkptne4

Auto-Extraction and Integration ofMetrics forWeb User Interfaces

Maxim Bakaev, Sebastian Heil, Vladimir Khvorostov, Martin Gaedke
2019 Journal of Web Engineering  
Metric-based assessment of web user interface (WUI) quality attributes is shifting from code (HTML/CSS) analysis to mining webpages'visual representations based on image recognition techniques.  ...  The implementation is based on OpenCV (image recognition functions), dlib (trained detector for the elements' classification), and Tesseract (label and content text recognition).  ...  fitness functions in optimization-based UI design; • searching in design/template collections based on specified target values for metrics; • retrieving design examples from case bases, using similarity  ... 
doi:10.13052/jwe1540-9589.17676 fatcat:h33genhf2zhsdlatonlla3mvdy

Image appearance modeling

Mark D. Fairchild, Garrett M. Johnson, Bernice E. Rogowitz, Thrasyvoulos N. Pappas
2003 Human Vision and Electronic Imaging VIII  
Instead, a more revolutionary approach will be required to make appearance predictions for more complex stimuli in a wider array of viewing conditions.  ...  of complexity of real natural and man-made scenes.  ...  Implementation of iCAM for image difference and image quality metrics.  ... 
doi:10.1117/12.477370 dblp:conf/hvei/FairchildJ03 fatcat:6vjgp7use5bwjl3h6skahytzmm

Factors impacting quality of experience in stereoscopic images

Liyuan Xing, Junyong You, Touradj Ebrahimi, Andrew Perkis, Andrew J. Woods, Nicolas S. Holliman, Neil A. Dodgson
2011 Stereoscopic Displays and Applications XXII  
An objective metric for crosstalk perception was proposed based on our findings of perceptual attributes of crosstalk perception, namely shadow degree, separation distance and spatial position of crosstalk  ...  Therefore, quality evaluation, both subjective assessment and objective metrics are necessarily required to understand, measure and eventually, model and predict stereoscopic 3D quality.  ...  Jie Xu for his helpful discussions and suggestions throughout this work.  ... 
doi:10.1117/12.872252 fatcat:acmr7swvr5getn4xfcpiraoxry

Automatic prediction of perceptual quality of multimedia signals—a survey

Kalpana Seshadrinathan, Alan Conrad Bovik
2010 Multimedia tools and applications  
We survey recent developments in multimedia signal quality assessment, including image, audio, video, and combined signals.  ...  We survey these models and recent competitive algorithms and discuss comparison studies that others have conducted. In this context we also describe existing signal quality assessment databases.  ...  ) metric [93] and a scalable wavelet based video distortion metric [42] .  ... 
doi:10.1007/s11042-010-0625-9 fatcat:tke5akli4jbnxgz5h36heco2uy

Quality evaluation of motion estimation algorithms based on structural distortions

Angela D'Angelo, Marco Carli, Mauro Barni
2009 2009 IEEE International Workshop on Multimedia Signal Processing  
Unlike other performances evaluation systems, that are based on measuring the errors between the actual and the predicted displacements, the proposed technique is inspired to the Human Visual System.  ...  For each of them the performances have been evaluated by comparing the proposed metric with the state of the art metrics.  ...  The classical scheme for evaluating the quality of the reconstructed frames is based on pixel-difference error metrics.  ... 
doi:10.1109/mmsp.2009.5293566 dblp:conf/mmsp/DAngeloCB09 fatcat:4pcl4h4h45bp5jjhxjzqekyqpq

Quality assessment for visible and infrared color fusion images of typical scenes

Shaoshu Gao Shaoshu Gao, Weiqi Jin Weiqi Jin, Lingxue Wang Lingxue Wang
2012 Chinese Optics Letters (COL)  
Two comprehensive evaluation metrics, image perceptual quality based on target detectability (PQTD) and perceptual quality based on scene understanding (PQSU), are proposed to measure image quality for  ...  The proposed evaluation metrics and their prediction models provide a foundation for further developing objective quality evaluation of color fusion images.  ...  Therefore, to evaluate the color fusion image quality comprehensively, we propose two evaluation metrics: image perceptual quality based on target detectability (PQTD) and perceptual quality based on scene  ... 
doi:10.3788/col201210.081101 fatcat:irzpbplvjjdjvex5yqt2z26wvi

A novel image quality assessment method and coefficient of quality for digital solutions of colour blindness

Meenakshi S, Anshu Singla
2021 IET Image Processing  
Such solutions involve simulation and compensation of conflicting colours to help the colour blind in the visual perception of colours.  ...  Reports show that colour blindness, a form of colour vision deficiency (CVD), affects about 8% of the male population and 0.5% of female population.  ...  vision and colour blind without using standard scales for the responses; (ii) this feedback does not cover image quality parameters and is based on the overall perception of the evaluator; (iii) when an  ... 
doi:10.1049/ipr2.12213 fatcat:gyde7cyfw5axjewfdq2kzgj5zu

X-ray image system design using a human visual model

Warren B. Jackson, Peter Beebee, David A. Jared, David K. Biegelsen, James O. Larimer, Jeffrey Lubin, Jennifer Gille, Richard L. Van Metter, Jacob Beutel
1996 Medical Imaging 1996: Physics of Medical Imaging  
In all cases the dependence of perceived image quality closely follows measures of image quality as determined by the HVM for many image system design variations.  ...  Because of the complex response of the human visual system, typical measurements of image system quality such as the detective quantum efficiency, mean transfer function, and signal-to-noise ratio cannot  ...  In the third step, each image pair was evaluated by the ViDEOS/Sarnoff Human Vision Discrimination Model (HVM), a model based on the human visual system .6 This model is optimized for speed and accurately  ... 
doi:10.1117/12.237794 fatcat:ka32pxutgvch7dwn3kolhndy44
« Previous Showing results 1 — 15 out of 23,979 results