Abstract
Pulsed-field Gel Electrophoresis (PFGE) is an important tool in genomic analysis. The result of PFGE is Preprocessing presented in an image. Each image contains several lanes. And each lane consists of bands. Two lanes are identified relative positions of bands are the same. We present a method that uses computer to extract the lanes and compare the lanes in the electrophoresis images. The presented method consists of two major steps. The first step is image processing and lane extraction. The second step is to convert a lane into chain code representation. The lane comparison is carried out through calculating the longest common subsequence between lanes. We define the distance between lanes in term of the LCS and the lengths of two lanes. Two lanes have smaller distance tend to have similar pattern. This method eliminates those very different patterns to help biologists reduce the lanes that need to be compared.
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