영상에서 주파수 기반의 초점/비초점 분석을 이용한 깊이 지도 생성 기법

Abstract

Abstract In this paper, we propose an efficient detph map creation method using Graph Cut and Discrete Wavelet Transform. First, we have segmented the original image by using Graph Cut to process with its each areas. After that, the information which describes segmented areas of original image have been created by proposed labeling method for segmented areas. And then, we have created four subbands which contain the original image’s frequency information. Finally, the depth map have been created by frequency map which made with HH, HL subbands and depth information calculation along the each segmented areas. The proposed method can perform efficient depth map creation process because of dynamic allocation using depth information. We also have tested the proposed method using PSNR(Peak Signal to Noise Ratio) method to evaluate ours. Key Words : Depth map creation, Focus-Defocus, Graph Cut, Discrete Wavelet Transform, Frequency information, Labeling Received 8 September 2014, Revised 15 October 2014Accepted 20 November 2014Corresponding Author: Sang Hun Lee(Kwangwoon University) Email: leesh58@kw.ac.krⒸ The Society of Digital Policy & Management. All rights reserved. This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is ISSN: 1738-1916 properly cited.