C. H. Leung

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Electronic commerce (e-commerce) applications are developed to allow companies to communicate with their partners, suppliers, and consumers on the internet. The migration from traditional business to e-commerce requires fundamental changes in business operational systems. It is not sufficient to focus on the development of web-based interfaces only. The(More)
In Handwritten signatures analyzed for forgery have to undergo feature extraction process, due to varied samples in size rotation and intra-domain changes, invariance has to be achieved during feature extraction process; circular Hidden Markov Model with discrete radon transform approach of feature extraction provides invariance. On other hand Scale(More)
The charge-trapping characteristics of BaTiO3 with and without nitrogen incorporation were investigated based on Al/Al2O3/BaTiO3/SiO2/Si (MONOS) capacitors. The physical properties of the high-k films were analyzed by transmission electron microscopy and X-ray photoelectron spectroscopy. Compared with the MONOS capacitor with BaTiO3 as charge-trapping(More)
Pentacene organic thin-film transistor (OTFT) based on ZrLaO<sub>x</sub> gate dielectric is proposed and has been fabricated. The effects of fluorine plasma and ammonia annealing on the properties of the OTFT have been studied. It reveals that the plasma treatment can greatly improve carrier mobility and shift the threshold voltage in the positive(More)
Image inpainting is an important area in digital image processing, which has applications in problems like image restoration, scratch removal, or fluorescent microscopy. A lot of tools have been developed to tackle these problems. The total variation inpainting and the Euler’s elastica model are popular variational PDE methods in nontexture local image(More)
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