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A new image indexing based on the color-spatial distribution feature is presented in this paper. The generalized image model that combining the original image with its smoothed image be used in the retrieval algorithm. In order to describe the spatial distribution of color, the annular color segmentation algorithm is introduced. According to the annular(More)
The problem of estimating the frequency of a complex signal is considered. Through analyzing the performance of the Quinn algorithm and Aboutanios iterative algorithm, when the frequency of signal is located in the central region of two neighboring quantized frequency in discrete Fourier transform (DFT), Quinn algorithm's precision is very high and its(More)
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