| Summary: | 碩士 === 國立清華大學 === 資訊工程學系 === 86 === A color image retrieval method based on 2D strings is proposed
in the study. We provide a friendly interface for users to
specify a query picture by drawing the partial contents of
desired images. First, at database creation, the color regions
of each image in the database are extracted by block-based color
segmentation. For each query picture, a color region grouping
method is used to eliminate the light or shadow effects of
segmented image and to adapt to various query pictures. Next, we
obtain 2D strings to represent the spatial relationship among
color regions of the query picture and segmented images. The
similarity between the query picture and images in the database
is defined as the length of the longest common sub-sequence of
their corresponding 2D strings. Thus, images which are similar
to the query picture can be retrieved from the database.
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