Zobrazeno 1 - 10
of 68
pro vyhledávání: '"P.H.W. Wong"'
Autor:
Sam Kwong, Xuekai Wei, Mingliang Zhou, Wilson Y. F. Yuen, Shiqi Wang, P.H.W. Wong, Chi-Keung Fong
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 30:4648-4662
High dynamic range (HDR) video compression technology, which is capable of delivering a wider range of luminance and a larger colour gamut than standard dynamic range (SDR) technology, has been widely used in recent years in many fields, including in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::224f0f3d3e432789d70ebb8cfe25537b
https://doi.org/10.1109/tcsvt.2019.2959807
https://doi.org/10.1109/tcsvt.2019.2959807
A Novel Patch Variance Biased Convolutional Neural Network for No-Reference Image Quality Assessment
Autor:
Yuming Li, Hon-Tung Luk, Mengyang Liu, Xuyuan Xu, Kin Wai Lau, P.H.W. Wong, Lai-Man Po, Chang Zhou, Wilson Y. F. Yuen
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 29:1223-1229
Deep convolutional neural networks (CNNs) have been successfully applied on no-reference image quality assessment (NR-IQA) with respect to human perception. Most of these methods deal with small image patches and use the average score of the test pat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b75e50d7c650acc5e914b341f5521680
https://doi.org/10.1109/tcsvt.2019.2891159
https://doi.org/10.1109/tcsvt.2019.2891159
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 20:236-249
The presence of noise can dramatically affect the efficiency of video compression systems. For performance improvement, most practical video compression systems adopt a denoising filter as a pre-processing module for the video encoder, or as a post-p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b770d6bf42f5a7b54751b507428240b
https://doi.org/10.1109/tcsvt.2009.2031453
https://doi.org/10.1109/tcsvt.2009.2031453
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 19:1692-1703
Rate-distortion (RD)-based mode selections are important techniques in video coding. In these methods, an encoder may compute the RD costs for all the possible coding modes, and select the one which achieves the best trade-off between encoding rate a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f709f1c32369bfbd74932a98c47f8870
https://doi.org/10.1109/tcsvt.2009.2031515
https://doi.org/10.1109/tcsvt.2009.2031515
Publikováno v:
Journal of Visual Communication and Image Representation. 20:365-376
In this paper, we propose a novel Wyner-Ziv-based video compression scheme which supports encoding a new type of inter frame called 'M-frame'. Different from traditional multi-hypothesis inter frames, the M-frame is specially compressed with its two
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b52a13273974278f24ca8f3c3c18cb08
https://doi.org/10.1016/j.jvcir.2009.03.007
https://doi.org/10.1016/j.jvcir.2009.03.007
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 19:627-641
A proper theoretical quantization-distortion model for hybrid video coding is always desirable, since this allows us to explain the behavior of existing codecs and to design better ones. However, due to the existence of motion-compensated prediction,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4febfea8cfaf60c41557c0757a8f77a3
https://doi.org/10.1109/tcsvt.2009.2017403
https://doi.org/10.1109/tcsvt.2009.2017403
Publikováno v:
IEEE Transactions on Multimedia. 10:1638-1647
Multiple description coding (MDC) is an effective error resilience (ER) technique for video coding. In case of frame loss, error concealment (EC) techniques can be used in MDC to reconstruct the lost frame, with error, from which subsequent frames ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77a16657bf68416f1fd416d79b8adfaa
https://doi.org/10.1109/tmm.2008.2007282
https://doi.org/10.1109/tmm.2008.2007282
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 13:813-830
Three novel blind watermarking techniques are proposed to embed watermarks into digital images for different purposes. The watermarks are designed to be decoded or detected without the original images. The first one, called single watermark embedding
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee702b27e2f0b0be028f0ecf29696ea3
https://doi.org/10.1109/tcsvt.2003.815948
https://doi.org/10.1109/tcsvt.2003.815948
Autor:
Oscar C. Au, P.H.W. Wong
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 13:746-752
In JPEG-to-JPEG image watermarking (J2J), the input is a JPEG image file. After watermark embedding, the image is JPEG-compressed such that the output file is also a JPEG file. We use the human visual system (HVS) model to estimate the J2J data hidin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ca59c23346218b7120f46cd802e5daa
https://doi.org/10.1109/tcsvt.2003.815949
https://doi.org/10.1109/tcsvt.2003.815949
Publikováno v:
ICME
In this paper, we propose an efficient encryption scheme by introducing randomness into the Lempel-Ziv-Welch (LZW) algorithm. This scheme utilizes random dictionary insertion and permutation, and incorporates with a bit-wise XOR module. Security anal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e3f122a1666c082b12f77451d188a86
https://doi.org/10.1109/icme.2008.4607417
https://doi.org/10.1109/icme.2008.4607417