Y. M. Zhu

Learn More
Automatic segmentation of cerebral cortex in magnetic resonance imaging (MRI) is a challenging problem in understanding brain anatomy and functions. The difficulty is mainly due to variable brain structures, various MRI artifacts and restrictive body scanning methods. This paper describes a hybrid model-based method for obtaining an accurate and(More)
Glutathione-S-transferases (GSTs) are ubiquitous enzymes that play a key role in stress tolerance and cellular detoxification. The GST gene GsGST14 selected from the gene expression profiles of Glycine soja under alkaline stress was transformed into alfalfa (Medicago sativa L.). Transgenic alfalfa plants showed 1.73–1.99 times higher GST activity than(More)
Volume data cutting plays a crucial part in medical image probing, computer assisted diagnosis, virtual surgery, etc. Based on hardware-accelerated texture-based volume rendering algorithm, the paper proposes a method for volume cutting. With Boolean operations, the method is extended to multi-object clipping and can meet the needs of more complicated(More)
Different sources of nitrogen pose diverse effects to algal community, but the mechanism of inhibitory effects of nitrogen sources on freshwater diatoms is not fully understood. The purpose of this study was to compare biomass, photosynthetic activity, and morphological structure of three common freshwater diatoms (Cyclotella meneghiniana, Nitzschia sp.,(More)
Simulation and three-dimensional visualization of object motion is a prerequisite for any surgical planning system. Orbital hypertelorism is a disease, which is most commonly associated with craniofacial malformations. We have developed a surgical planning system for planning and evaluation of orbital hypertelorism surgery. In our system CT-based virtual(More)
Visualizing efficiently volumetric data still remains a challenge in many fields such as medical imaging and scientific visualization. Monte Carlo volume rendering is a novel and efficient visualization technique for very large datasets. However, when taking into account depth cueing, the volume rendering integral becomes complex, and it is difficult to(More)
  • 1