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3-D Mean-Separation-Type Short-Time DFT with Its Application to Moving-Image Denoising

Abstract: 

Although for a still image the 2-D DFT and the 2-D DCT have similar properties to each other, for a moving-image sequence the 3-D DFT gets an advantage of representing the sequence more compactly over the 3-D DCT. Through the mathematical analysis of the 3-D DFT and the 3-D DCT based on a simple signal model of a moving-image sequence, this paper shows that the even symmetrization employed implicitly by the 3-D DCT may cause deterioration of representation efficiency and hence the 3-D DFT can achieve better representation efficiency than the 3-D DCT. In addition, to improve the suitability of the 3-D short-time DFT to processing of video signals which generally have significant local DC components carrying important structural information, this paper introduces a technique of local-mean-separation as a preprocess of the 3-D short-time DFT, thus to construct 3-D mean-separation-type ST-DFT; applies it to video denoising, and demonstrates its advantage over the existing 3-D transforms through experimental simulations of video denoising.

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Paper Details

Authors:
Takashi Komatsu, Ken Tyon, Takahiro Saito
Submitted On:
13 September 2017 - 8:19pm
Short Link:
Type:
Poster
Event:
Presenter's Name:
Takahiro Saito
Paper Code:
TA-PB.3
Document Year:
2017
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[1] Takashi Komatsu, Ken Tyon, Takahiro Saito, "3-D Mean-Separation-Type Short-Time DFT with Its Application to Moving-Image Denoising", IEEE SigPort, 2017. [Online]. Available: http://sigport.org/1983. Accessed: Sep. 19, 2017.
@article{1983-17,
url = {http://sigport.org/1983},
author = {Takashi Komatsu; Ken Tyon; Takahiro Saito },
publisher = {IEEE SigPort},
title = {3-D Mean-Separation-Type Short-Time DFT with Its Application to Moving-Image Denoising},
year = {2017} }
TY - EJOUR
T1 - 3-D Mean-Separation-Type Short-Time DFT with Its Application to Moving-Image Denoising
AU - Takashi Komatsu; Ken Tyon; Takahiro Saito
PY - 2017
PB - IEEE SigPort
UR - http://sigport.org/1983
ER -
Takashi Komatsu, Ken Tyon, Takahiro Saito. (2017). 3-D Mean-Separation-Type Short-Time DFT with Its Application to Moving-Image Denoising. IEEE SigPort. http://sigport.org/1983
Takashi Komatsu, Ken Tyon, Takahiro Saito, 2017. 3-D Mean-Separation-Type Short-Time DFT with Its Application to Moving-Image Denoising. Available at: http://sigport.org/1983.
Takashi Komatsu, Ken Tyon, Takahiro Saito. (2017). "3-D Mean-Separation-Type Short-Time DFT with Its Application to Moving-Image Denoising." Web.
1. Takashi Komatsu, Ken Tyon, Takahiro Saito. 3-D Mean-Separation-Type Short-Time DFT with Its Application to Moving-Image Denoising [Internet]. IEEE SigPort; 2017. Available from : http://sigport.org/1983