Pearl P. Guan

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Statistical analysis of hydrogen bonds between the DNA chain and histones in nucleosomes shows that there is a periodicity about 10 base pairs along the DNA sequence. This periodicity also exists in dinucleotides which are found to be highly correlated with these hydrogen bonds. By analyzing the components of these protein-DNA hydrogen bonds, we find that(More)
INTRODUCTION Thresholding, as the simplest method to separate the foreground from the background, is the fundamental procedure in many applications of image processing, such as edge extraction, object recognition and contend-based image retrieval. It can be used to create binary images from a gray level image (Haralick and Shapiro 1985; Haralick and Shapiro(More)
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