Results 191 to 200 of about 54,446 (214)

No-Reference PSNR Estimation for HEVC Encoded Video

IEEE Transactions on Broadcasting, 2013
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 ...
Lee, BS Lee, Bum-Shik, Kim, MC Kim, Mun-Churl   +1 more
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Video Matching by One-Dimensional PSNR Profile

Applied Mechanics and Materials, 2013
This paper addresses a compact framework to matching video sequences through a PSNR-based profile. This simplify video profile is suitable to matching process when apply in disordered undersea videos. As opposed to using color and motion feature across the video sequence, we use the image quality of successive frames to be a feature of videos.
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Modeling and reduction of PSNR fluctuations in 3D wavelet coding

Proceedings 2001 International Conference on Image Processing (Cat. No.01CH37205), 2002
We study the effects of the quantization of the three-dimensional wavelet transform coefficients, encoded using a 3D zerotree-based compression scheme. The processing of the quantization error operated by the synthesis filter bank actually determines a modulation of the reconstruction error statistics.
SIGNORONI, Alberto, LEONARDI, Riccardo
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Appendix C: Definition of PSNR

2009
PSNR is calculated by summing up the squared pixel differences between the distorted and the source video signal. It has to be calculated for each component separately.
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Embedding data in edge boundaries with high PSNR

2011 7th International Conference on Emerging Technologies, 2011
Data hiding is one of the most significant aspects in information security. Generally data embedding is achieved in communication, image, text, voice, or multimedia content for copyright, military communication, authentication and many other purposes.
Mehdi Hussain, M. Hussain
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On the mDCT-PSNR image quality index

2009 International Workshop on Quality of Multimedia Experience, 2009
Full reference image quality indices assign a quality index to a pair of an undistorted reference image and a distorted image to be assessed; the quality of the index itself is then defined by its ability to predict the outcome of subjective tests performed by human observers judging the quality of the same image pair.
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Template matching of occluded object under low PSNR

Digital Signal Processing, 2013
A robust template matching using occlusion-free correlation (OFC) coefficient is presented in this paper for the purpose of locating objects partially occluded under low PSNR (Peak Signal to Noise Ratio) environment. The OFC coefficient can effectively eliminate the negative effect of occlusion on matching score, resulting in providing better accuracy ...
Jae-Chern Yoo, Chang Wook Ahn
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Stego image quality and the reliability of PSNR

2010 2nd International Conference on Image Processing Theory, Tools and Applications, 2010
Digital image steganography is the art of hiding information in other digital images. Moreover, image quality evaluation has many difficulties such as the amount of degradation or distortion induced in the reconstructed image. The peak signal-to-noise ratio (PSNR) is the most common metric used to evaluate the stego image quality.
Adel Almohammad, Gheorghita Ghinea
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No-reference PSNR Estimation Based on HEVC Coding

2018 10th International Conference on Communication Software and Networks (ICCSN), 2018
With the continuous rising of video applications, the compression of video information has become necessary. As the newest video coding standard, HEVC achieves twice the compression ratio of H.264 under the same video quality. But meanwhile, it produces certain quality impairments, so it's necessary to do video quality evaluation on HEVC coding.
Suliu Feng, Caihong Wang, Xiuhua Jiang
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An Algorithm to Control Watermarking Capacity Using PSNR

Advanced Materials Research, 2014
Some existing methods for estimating image watermarking capacity may degenerate the quality of stego-image when the estimated capacity is achieved. In this paper, based on the Region of Interest (ROI) model, we discuss on the capacity problem and the quality of stego-images using PSNR.
Yong Xing, Dao Shun Wang
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