Dynamic Resolution Conversion Method for Low Bit Rate Video Transmission

Akira NAKAGAWA; Eishi MORIMATSU; Takashi ITOH; Kiichi MATSUDA

Dynamic Resolution Conversion Method for Low Bit Rate Video Transmission

Akira NAKAGAWA, Eishi MORIMATSU, Takashi ITOH, Kiichi MATSUDA

Full Text Views

0

Cite this

Summary :

High-speed digital data transmission services with mobile equipment are becoming available. Though the visual signal is one of the expected media to be used with such transmission capabilities, the bandwidth of visual signal is much broader than the provided transmission bandwidth in general. Therefore efficient video encoding algorithms have to be introduced. The ITU-T Recommendation H.263 and ISO/IEC MPEG-4 are very powerful encoding algorithms for a wide range of video sequences. But a large amount of bits are generated in highly active scenes to encode them using such conventional methods. This results in frame skipping and degradation of decoded picture quality. In order to keep these degradations as low as possible, we proposed a Dynamic Resolution Conversion (DRC) method of the prediction error. In the method, a reduced resolution encoding is carried out when the input scene is highly active. Simulation results show that the proposed scheme can improve both coding frame rate and picture quality in a highly active scene. We also present in this paper that some analysis for the performance of the DRC method under the error prone environment that is inevitable with mobile communications.

Publication: IEICE TRANSACTIONS on Communications Vol.E84-B No.4 pp.930-940

Publication Date: 2001/04/01

Publicized

Online ISSN

DOI

Type of Manuscript: Special Section PAPER (Special Issue on Mobile Multimedia Communications)

Category

Cite this

Copy

Akira NAKAGAWA, Eishi MORIMATSU, Takashi ITOH, Kiichi MATSUDA, "Dynamic Resolution Conversion Method for Low Bit Rate Video Transmission" in IEICE TRANSACTIONS on Communications, vol. E84-B, no. 4, pp. 930-940, April 2001, doi: .
Abstract: High-speed digital data transmission services with mobile equipment are becoming available. Though the visual signal is one of the expected media to be used with such transmission capabilities, the bandwidth of visual signal is much broader than the provided transmission bandwidth in general. Therefore efficient video encoding algorithms have to be introduced. The ITU-T Recommendation H.263 and ISO/IEC MPEG-4 are very powerful encoding algorithms for a wide range of video sequences. But a large amount of bits are generated in highly active scenes to encode them using such conventional methods. This results in frame skipping and degradation of decoded picture quality. In order to keep these degradations as low as possible, we proposed a Dynamic Resolution Conversion (DRC) method of the prediction error. In the method, a reduced resolution encoding is carried out when the input scene is highly active. Simulation results show that the proposed scheme can improve both coding frame rate and picture quality in a highly active scene. We also present in this paper that some analysis for the performance of the DRC method under the error prone environment that is inevitable with mobile communications.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e84-b_4_930/_p

Copy

@ARTICLE{e84-b_4_930,
author={Akira NAKAGAWA, Eishi MORIMATSU, Takashi ITOH, Kiichi MATSUDA, },
journal={IEICE TRANSACTIONS on Communications},
title={Dynamic Resolution Conversion Method for Low Bit Rate Video Transmission},
year={2001},
volume={E84-B},
number={4},
pages={930-940},
abstract={High-speed digital data transmission services with mobile equipment are becoming available. Though the visual signal is one of the expected media to be used with such transmission capabilities, the bandwidth of visual signal is much broader than the provided transmission bandwidth in general. Therefore efficient video encoding algorithms have to be introduced. The ITU-T Recommendation H.263 and ISO/IEC MPEG-4 are very powerful encoding algorithms for a wide range of video sequences. But a large amount of bits are generated in highly active scenes to encode them using such conventional methods. This results in frame skipping and degradation of decoded picture quality. In order to keep these degradations as low as possible, we proposed a Dynamic Resolution Conversion (DRC) method of the prediction error. In the method, a reduced resolution encoding is carried out when the input scene is highly active. Simulation results show that the proposed scheme can improve both coding frame rate and picture quality in a highly active scene. We also present in this paper that some analysis for the performance of the DRC method under the error prone environment that is inevitable with mobile communications.},
keywords={},
doi={},
ISSN={},
month={April},}

Copy

TY - JOUR
TI - Dynamic Resolution Conversion Method for Low Bit Rate Video Transmission
T2 - IEICE TRANSACTIONS on Communications
SP - 930
EP - 940
AU - Akira NAKAGAWA
AU - Eishi MORIMATSU
AU - Takashi ITOH
AU - Kiichi MATSUDA
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E84-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2001
AB - High-speed digital data transmission services with mobile equipment are becoming available. Though the visual signal is one of the expected media to be used with such transmission capabilities, the bandwidth of visual signal is much broader than the provided transmission bandwidth in general. Therefore efficient video encoding algorithms have to be introduced. The ITU-T Recommendation H.263 and ISO/IEC MPEG-4 are very powerful encoding algorithms for a wide range of video sequences. But a large amount of bits are generated in highly active scenes to encode them using such conventional methods. This results in frame skipping and degradation of decoded picture quality. In order to keep these degradations as low as possible, we proposed a Dynamic Resolution Conversion (DRC) method of the prediction error. In the method, a reduced resolution encoding is carried out when the input scene is highly active. Simulation results show that the proposed scheme can improve both coding frame rate and picture quality in a highly active scene. We also present in this paper that some analysis for the performance of the DRC method under the error prone environment that is inevitable with mobile communications.
ER -