Results 211 to 220 of about 56,033 (246)

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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Mazdak Technique for PSNR Estimation in Audio Steganography

Applied Mechanics and Materials, 2012
A novel method to estimate PSNR of the result of audio steganography before embedding is presented. Estimated PSNR by proposed linear interpolation formula was tested and the result was almost the same with the obtained PSNR in practical way.
Zamani, Mazdak, Abdul Manaf, Azizah, M. Abdullah, Shahidan, Chaeikar, Saman Shojae   +3 more
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PSNR evaluation and alignment recovery for mobile satellite video broadcasting

2012 6th Advanced Satellite Multimedia Systems Conference (ASMS) and 12th Signal Processing for Space Communications Workshop (SPSC), 2012
Peak Signal-to-Noise Ratio (PSNR) is the simplest and most widely used objective video quality evaluation method. However, traditional PSNR calculations do not take packet loss into account thus giving an inaccurate representation of the video quality.
PULLANO, VALENTINA, VANELLI CORALLI, ALESSANDRO, CORAZZA, GIOVANNI EMANUELE   +2 more
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Efficient Hierarchical Segmentation Based On PSNR For Low Bit Rate Coding

Proceedings of APCCAS'96 - Asia Pacific Conference on Circuits and Systems, 2002
This paper presents a hierarchical morphological segmentation algorithm based on PSNR for each region. The algorithm follows a top-down procedure. It first takes into account the global information and produces a coarse segmentation, that is, with a small number of regions. Then, each region has different quality in coarse segmented image.
null Young-Sik Park, null Gi-Seok Kim, null Yong-Suk Kim, null Kun-Woen Song, null Yeong-Ho Ha   +4 more
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Efficient PSNR scalable coding of motion compensated prediction residuals

2006 8th international Conference on Signal Processing, 2006
The improvement of video coding is depended on how to reduce the use of motion compensation prediction residuals (MCPR), which is also called displaced frame difference. This paper has put forward a PSNR scalable image coding method based on bit-plane technique and lifting scheme wavelet. Combining the statistical property of MCPR and HVS property, the
Liu Dan, Xiang-hai Wang
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MPEG-4 AVC No-Reference PSNR Estimator: The Framework

2007 17th International Conference Radioelektronika, 2007
This contribution presents a concept of a novel objective metric for MPEG-4 AVC / H.264 video no-reference quality evaluation. The metric should operate on the encoded bitstream only, bringing the great benefit of reducing computational complexity as no pixel decoding is necessary.
Martin Slanina, Vaclav Ricny, Robert Forchheimer   +2 more
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Low PSNR High Fidelity Image Compression Using Surrounding Pixels

2018 International Conference on Circuits and Systems in Digital Enterprise Technology (ICCSDET), 2018
Data compression is important to reduce the transmission delays and to ensure efficient utilization of bandwidth and storage space. As images constitute a major part of the data being stored and communicated, image compression is of great importance. However, compression should not degrade the quality of the image to an unacceptable level.
Tanuja R. Patil, Vishwanath P. Baligar, Roopa P. Huilgol   +2 more
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