Xiaocheng Wei

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Multimedia data of huge amount gets involved into people's daily life, bringing us a very important issue of efficiently managing video collections. Semantic content based on video retrieval is most effective for finding information and actual application. Of the researches of video retrieval, Bag-of-features (BoF) deriving from local key points has(More)
Water molecular diffusion in vivo tissue is much more complicated. We aimed to compare non-Gaussian diffusion models of diffusion-weighted imaging (DWI) including intra-voxel incoherent motion (IVIM), stretched-exponential model (SEM) and Gaussian diffusion model at 3.0 T MRI in patients with rectal cancer, and to determine the optimal model for(More)
The fusion of object and scene plays an important role in image editing field, especially in the film production process. Poisson image editing technique is widely used in the object-scene fusion and a new method based on IHS transform has also been offered recently. Unfortunately, both of these two means might cause color distortion. Through introducing(More)
Since the existing fusion method of object and scene that is based on IHS transform has a defect: emergence of the scene image's illusion in target area, this paper proposes an smoothing filter-based algorithm through smoothing target areas of the hue component and saturation component of the new scene image which are used to carry out IHS inverse(More)
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