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An Advanced Algorithm for Image Resolution Enhancement Technique in both Wavelet and Spatial Domain
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- 발행기관
- 보안공학연구지원센터(IJHIT) 바로가기
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- 간행물
- International Journal of Hybrid Information Technology 바로가기
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- 통권
- Vol.7 No.5 (2014.09)바로가기
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- 페이지
- pp.385-392
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- 저자
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- 언어
- 영어(ENG)
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- URL
- https://www.earticle.net/Article/A231763
※ 원문제공기관과의 협약기간이 종료되어 열람이 제한될 수 있습니다.
원문정보
초록
- 영어
- Image enhancement is a process of improving the quality of digital image without knowledge about the source of degradation. A method to enhance the quality of given low resolution image is presented in this paper. The enhancement is made in both wavelet and spatial domain. The upsampling scheme is used to enhance the edge information in the spatial domain. To get a sharp high resolution image, the proposed method uses Discrete Wavelet Transform (DWT) and Stationary Wavelet Transform (SWT) which decompose the input image into four sub-bands denoted by LL, LH, HL and HH. Then the high frequency sub-bands of DWT as well as the input image are interpolated separately by using bicubic interpolation. The high frequency sub-bands produced by SWT are added into the interpolated high frequency sub-bands to correct the estimated high frequency coefficients. After that, the corrected high frequency sub-bands and interpolated input image are combined by using inverse DWT (IDWT). Consequently, the support of filters to model the regularity of natural images is exploited in the wavelet domain. To minimize the reconstruction error, iterative back projection method is employed. The objective and subjective qualities show that the proposed algorithm over-performs the conventional and state-of-the-art image resolution enhancement techniques.
목차
Abstract
1. Introduction
2. Existing Techniques
2.1. Wavelet Zero-Padding Interpolation (WZP)
2.2. DWT&SWT Based SR Technique
2.3. Iterative Back Projection
3. Proposed Algorithm
4. Image Quality Assessment
5. Experimental Results
6. Conclusion
References
키워드
Image super resolution discrete wavelet transform stationary wavelet transform iterative back projection저자
간행물 정보
발행기관
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- 발행기관명
- 보안공학연구지원센터(IJHIT) [Science & Engineering Research Support Center, Republic of Korea(IJHIT)]
- 설립연도
- 2006
- 분야
- 공학>컴퓨터학
- 소개
- 1. 보안공학에 대한 각종 조사 및 연구 2. 보안공학에 대한 응용기술 연구 및 발표 3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최 4. 보안공학 기술의 상호 협조 및 정보교환 5. 보안공학에 관한 표준화 사업 및 규격의 제정 6. 보안공학에 관한 산학연 협동의 증진 7. 국제적 학술 교류 및 기술 협력 8. 보안공학에 관한 논문지 발간 9. 기타 본 회 목적 달성에 필요한 사업
간행물
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- 간행물명
- International Journal of Hybrid Information Technology
- 간기
- 격월간
- pISSN
- 1738-9968
- 수록기간
- 2008~2016
- 십진분류
- KDC 505 DDC 605
이 권호 내 다른 논문 / International Journal of Hybrid Information Technology Vol.7 No.5
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