title: A Novel Cascade Classifier for Automatic Microcalcification Detection.
abstract: In this paper, we present a novel cascaded classification framework for automatic detection of individual and clusters of microcalcifications (μC). Our framework comprises three classification stages: i) a random forest (RF) classifier for simple features capturing the second order local structure of individual μCs, where non-μC pixels in the target mammogram are efficiently eliminated; ii) a more complex discriminative restricted Boltzmann machine (DRBM) classifier for μC candidates determined in the RF stage, which automatically learns the detailed morphology of μC appearances for improved discriminative power; and iii) a detector to detect clusters of μCs from the individual μC detection results, using two different criteria. From the two-stage RF-DRBM classifier, we are able to distinguish μCs using explicitly computed features, as well as learn implicit features that are able to further discriminate between confusing cases. Experimental evaluation is conducted on the original Mammographic Image Analysis Society (MIAS) and mini-MIAS databases, as well as our own Seoul National University Bundang Hospital digital mammographic database. It is shown that the proposed method outperforms comparable methods in terms of receiver operating characteristic (ROC) and precision-recall curves for detection of individual μCs and free-response receiver operating characteristic (FROC) curve for detection of clustered μCs.
authors.affiliation: Department of Electrical and Computer Engineering, ASRI, Seoul National University, Seoul, Republic of Korea.
authors.forename: Seung Yeon
authors.initials: SY
authors.lastname: Shin
authors.affiliation: Department of Electronic Engineering, Soonchunhyang University, Asan, Republic of Korea.
authors.forename: Soochahn
authors.initials: S
authors.lastname: Lee
authors.affiliation: Division of Computer and Electronic Systems Engineering, Hankuk University of Foreign Studies, Yongin, Republic of Korea.
authors.forename: Il Dong
authors.initials: ID
authors.lastname: Yun
authors.affiliation: Division of Computer and Electronic Systems Engineering, Hankuk University of Foreign Studies, Yongin, Republic of Korea.
authors.forename: Ho Yub
authors.initials: HY
authors.lastname: Jung
authors.affiliation: Department of Electrical and Computer Engineering, Ajou University, Suwon, Republic of Korea.
authors.forename: Yong Seok
authors.initials: YS
authors.lastname: Heo
authors.affiliation: Department of Radiology, Seoul National University Bundang Hospital, Seongnam, Republic of Korea.
authors.forename: Sun Mi
authors.initials: SM
authors.lastname: Kim
authors.affiliation: Department of Electrical and Computer Engineering, ASRI, Seoul National University, Seoul, Republic of Korea.
authors.forename: Kyoung Mu
authors.initials: KM
authors.lastname: Lee
mesh_terms: D001943:Breast Neoplasms / Q000000981:diagnostic imaging*; D002114:Calcinosis / Q000145:classification / Q000000981:diagnostic imaging*; D016208:Databases, Factual; D005260:Female; D006801:Humans; D000069550:Machine Learning; D008327:Mammography / Q000379:methods* / Q000706:statistics & numerical data; D011856:Radiographic Image Enhancement / Q000379:methods; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D066106:Seoul