Journal ArticleDOI
No-Reference PSNR Estimation for HEVC Encoded Video
Bumshik Lee,Mun Churl Kim +1 more
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TLDR
A no-reference peak signal-to-noise ratio (PSNR) estimation method is first presented for a quadtree-based motion estimation or compensation and transform coding scheme such as HEVC test model (HM), which is expected to be popularly used due to its highly enhanced coding efficiency, in 2-D and 3-D high resolution videos.Abstract:
Video quality estimation is considered a means of monitoring quality of service in broadcasting or IPTV services. In this paper, a no-reference peak signal-to-noise ratio (PSNR) estimation method is first presented for a quadtree-based motion estimation or compensation and transform coding scheme such as HEVC test model (HM), which is expected to be popularly used due to its highly enhanced coding efficiency, in 2-D and 3-D high resolution videos. The proposed no-reference PSNR estimation method is based on a Laplacian mixture distribution, which takes into account the distribution characteristics of residual transform coefficients in different quadtree depths and coding types of coding units (CUs). In order to predict the model parameters of the Laplacian mixture distribution for all zero quantized coefficients case, an exponential regression scheme is employed over quadtree depth levels of CUs. The proposed no-reference PSNR estimation method yields fairly accurate results from 0.970 to 0.983 in correlation and from 0.530 to 0.890 in RMSE between the actual and the estimated PSNR values for HM encoded bitstreams, outperforming single PDF based models.read more
Citations
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Journal ArticleDOI
No-reference image and video quality assessment: a classification and review of recent approaches
TL;DR: A classification and review of latest published research work in the area of NR image and video quality assessment is presented and the NR methods of visual quality assessment considered for review are structured into categories and subcategories based on the types of methodologies used for the underlying processing employed for quality estimation.
Journal ArticleDOI
HEVC in wireless environments
TL;DR: Experimental results demonstrate that for low-delay wireless video communications, the HEVC codec is more effective compare to previous H.264 codec and shows better overall performance.
Journal ArticleDOI
No-reference pixel based video quality assessment for HEVC decoded video
TL;DR: The results show that the quality scores computed by the proposed VQA method are highly correlated with the mean subjective assessments.
Journal ArticleDOI
Encoding and video content based HEVC video quality prediction
TL;DR: A content-based video quality prediction model that takes into account HEVC encoding parameter such as Quantization Parameter (QP) and video content type (characterised by motion activities and complexity of video sequences) is developed and could be used by content providers to determine the initial quality of videos based on QP and content type.
Journal ArticleDOI
A regression-based framework for estimating the objective quality of HEVC coding units and video frames
TL;DR: The objective quality estimation results are compared against an existing state-of-the-art solution and quantified using the Pearson correlation factor and the root mean square error measure.
References
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Book
Numerical Methods for Engineers
TL;DR: Numerical methods for engineers , Numerical method for engineers, and more.
Journal ArticleDOI
Objective Video Quality Assessment Methods: A Classification, Review, and Performance Comparison
TL;DR: A classification scheme for full-reference and reduced-reference media-layer objective video quality assessment methods is introduced and it is found that the natural visual statistics based MultiScale-Structural SIMilarity index (MS-SSIM), thenatural visual feature based Video Quality Metric (VQM), and the perceptual spatio-temporal frequency-domain based MOtion-based Video Integrity Evaluation (MOVIE) index give the best performance for the LIVE Video Quality Database.
Journal ArticleDOI
Assessing Quality of Experience of IPTV and Video on Demand Services in Real-Life Environments
Nicolas Staelens,Stefaan Moens,Wendy Van den Broeck,Ilse Marien,Brecht Vermeulen,Peter Lambert,Rik Van de Walle,Piet Demeester +7 more
TL;DR: A novel subjective quality assessment methodology based on full-length movies is proposed that enables audiovisual quality assessment in the same environments and under the same conditions users typically watch television.
Journal ArticleDOI
Video Compression Using Nested Quadtree Structures, Leaf Merging, and Improved Techniques for Motion Representation and Entropy Coding
Detlev Marpe,Heiko Schwarz,Sebastian Bosse,Benjamin Bross,Philipp Helle,Tobias Hinz,Heiner Kirchhoffer,Haricharan Lakshman,Tung Nguyen,Oudin Simon,Mischa Siekmann,Karsten Suhring,Martin Winken,Thomas Wiegand +13 more
TL;DR: A video coding architecture is described that is based on nested and pre-configurable quadtree structures for flexible and signal-adaptive picture partitioning that was ranked among the five best performing proposals, both in terms of subjective and objective quality.