Lily S Lee

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  • Kah-Kay Sung, Kah Kay, Sung, Thesis Supervisor, Tomaso A Poggio, Title Uncas +35 others
  • 1998
This thesis presents a learning based approach for detecting classes of objects and patterns with variable image appearance but highly predictable image boundaries. It consists of two parts. In part one, we i n troduce our object and pattern detection approach using a concrete human face detection example. The approach rst builds a distribution-based model(More)
  • Jing Huang, Becky, Liz, Jan Cay, Karla, Robin Gau +22 others
  • 1998
We propose a new image feature called the color correlogram as a generic color-spatial indexing tool to tackle various problems that arise in content-based image retrieval and video browsing. Informally speaking, a correlogram represents the spatial correlation of colors in an image. While the computing and storage costs of correlograms match those of(More)
Regional cerebral blood flow was assessed in 19 patients with early idiopathic Parkinson's disease (PD) and 12 control subjects of similar age by single-photon emission tomography using technetium-99m hexamethylpropylene amine oxime (HMPAO). Of the patients with PD, seven were mildly demented and 15 presented with hemiparkinsonism. Mean HMPAO cortical or(More)
© 2 0 0 1 m a s s a c h u s e t t s i n s t i t u t e o f t e c h n o l o g y, c a m b r i d g e , m a 0 2 1 3 9 u s a — w w w. a i. m i t. e d u m a s s a c h u s e t t s i n s t i t u t e o f t e c Abstract This paper describes a representation of the dynamics of human walking action for the purpose of person identification and classification by gait(More)
OBJECTIVE Increases in atonic postpartum haemorrhage (PPH) have been reported from several countries in recent years. We attempted to determine the potential cause of the increase in atonic and severe atonic PPH. DESIGN Population-based retrospective cohort study. SETTING British Columbia, Canada, 2001-2009. POPULATION All women with live births or(More)
This thesis describes a representation of gait appearance for the purpose of person identification and classification. This gait representation is based on simple localized image features such as moments extracted from orthogonal view video silhouettes of human walking motion. A suite of time-integration methods, spanning a range of coarseness of time(More)
BACKGROUND Overweight and obese women are known to be at increased risk of caesarean birth. This study estimates the contribution of prepregnancy body mass index (BMI) and gestational weight gain (GWG) to caesarean births in Canada. METHODS We analyzed data from women in the Canadian Maternity Experiences Survey who had a singleton term live birth in(More)
BACKGROUND Postpartum hemorrhage, a major cause of maternal death and severe maternal morbidity, increased in frequency in Canada between 1991 and 2004. We carried out a study to describe the epidemiology of postpartum hemorrhage in British Columbia, Canada, between 2000 and 2009. METHODS The study population included all women residents of British(More)
BACKGROUND Low or high prepregnancy body mass index (BMI) and inadequate or excess gestational weight gain (GWG) are associated with adverse neonatal outcomes. This study estimates the contribution of these risk factors to preterm births (PTBs), small-for-gestational age (SGA) and large-for-gestational age (LGA) births in Canada compared to the contribution(More)
BACKGROUND The British Columbia Perinatal Data Registry (BCPDR) contains individual-level obstetrical and neonatal medical chart data for virtually all births occurring in British Columbia, Canada. The objective of this study was to assess the validity of information in the BCPDR by performing a provincial chart re-abstraction study. METHODS A two-stage(More)