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pro vyhledávání: '"R.L. de Queiroz"'
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Autor:
R.L. de Queiroz, Philip A. Chou
Publikováno v:
ICIP
3D immersive communications are trending as real-time point clouds capture and display of point cloud video become feasible. This paper presents a novel motion-compensated approach to encoding dynamic voxelized point clouds (VPC) at low bit rates. A
Publikováno v:
2017 IEEE/OES Acoustics in Underwater Geosciences Symposium (RIO Acoustics).
We propose a scalable lossy-compression method to enable acoustic data transmission through a narrow band channel (e.g. from an AUV), while still allowing for sufficiently good reconstruction on the receive station, which is adequate for other proces
Autor:
R.L. de Queiroz, Alexandre Zaghetto
Publikováno v:
IEEE Transactions on Image Processing. 22:2420-2428
This paper proposes a hybrid pattern matching/transform-based compression method for scanned documents. The idea is to use regular video interframe prediction as a pattern matching algorithm that can be applied to document coding. We show that this i
Publikováno v:
IEEE Signal Processing Letters. 20:359-362
An architecture for free-viewpoint broadcast television transmission is proposed where all the views are transmitted at potentially different qualities and watched by a large number of viewers. The quality (or bit-rate) of each view is controlled by
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 22:1249-1256
In stereoscopic and multiview video, binocular suppression theory states that the visual subjective quality of 3-D experience is not much affected by asymmetrical blurring of the individual views. Based on these studies, mixed-resolution frameworks a
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 22:1321-1331
Example-based super-resolution (SR) is an attractive option to Bayesian approaches to enhance image resolution. We use a multiresolution approach to example-based SR and discuss codebook construction for video sequences. We match a block to be super-
Autor:
R.L. de Queiroz, Diogo C. Garcia
Publikováno v:
IEEE Signal Processing Letters. 17:831-834
A new intra-prediction mode for the H.264/AVC standard is proposed. Each pixel within a block is predicted by a weighted sum of its neighbours, according to an Nth order Markov linear model. The weights are obtained through a least-squares estimate f
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 20:189-200
Wyner-Ziv (WZ) coding of video utilizes simple encoders and highly complex decoders. A transcoder from a WZ codec to a traditional codec can potentially increase the range of applications for WZ codecs. We present a transcoder scheme from the most po
Akademický článek
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