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Using MTF with fixed-zoning method for automated gated imaging system in turbid medium

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Title Using MTF with fixed-zoning method for automated gated imaging system in turbid medium
 
Creator Chua, YekHong
Tan, ChingSeong
Lee, ZhiHong
Chai, TongYuen
Seet, Gerald
Sluzek, Andrzej
 
Subject Range gated imaging system
Time of flight
Turbid water
Image processing
Image fusion
 
Description 236-241
For a typical gated system, the gated images are recorded into video format
in increasing gate opening time, each frame of the video recorded is basically
to “slice” the targets at different distance from camera (based on time of
light). In this paper, all enhanced target images within the field of view
(FOV) are fused into one 3D image. Works had been done in 1) selecting a
quantitative image quality index for automated tuning system so that sectioned
images with better quality can be detected accurately in turbid condition and
2) applying a fixed zoning system - sectioning method by splitting input images
into 25 equal sub-images to demonstrate the concept of flexible zoning method
in future works. Modulation Transfer Function
(MTF) can perform better in analyzing images under turbid condition thus is
selected for this application. Experiment results show that the mid-band
spatial frequencies from 21 to 61 demonstrate the degradation of image quality
due to the turbid water backscattering noises. Thus, we propose to use MTF in
the auto-tuning system to select best quality target from multiple images.
Subsequently, image fusion is performed to fuse all selected sub-images into 3D
extended targets in turbid condition.
 
Date 2011-05-23T11:32:17Z
2011-05-23T11:32:17Z
2011-04
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/11729
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.40(2) [April 2011]