In this paper, we propose new image retrieval system using global and local image features and the Dirichlet process Gaussian mixture model (DPGMM). First, we considered global and local image features. Global features are color histogram, wavelet coefficients, and Fourier descriptors extracted from a given image. Local features are defined as both the histogram features of pixel values extracted from square image patches and descriptors such as SIFT extracted from the salient region having center points as affine invariant detectors. Second, we have modeled an observed image as the DPGMM, and we have investigated the variational Bayesian inference method which can be used to estimate the parameters of DPGMM. And then we have extracted two types of feature vectors from an estimated DPGMM to represent a given image. Third, the image retrieval is conducted by matching two types of feature vectors such as the probability density feature and the feature signature vector generated by DPGMM based on two kinds of distance measures. Finally, we have carried out experiments on two kinds of real images datasets in order to compare the performance between the proposed method and the existing methods.
보안공학연구지원센터(IJSEIA) [Science & Engineering Research Support Center, Republic of Korea(IJSEIA)]
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
간행물명
International Journal of Software Engineering and Its Applications
간기
월간
pISSN
1738-9984
수록기간
2008~2016
등재여부
SCOPUS
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Software Engineering and Its Applications Vol.8 No.3