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METHOD FOR ENCODING A BINARY IMAGE BY USING AN ADAPTIVE TEMPLATE, A DEVICE THEREOF, A DECODING METHOD THEREOF, AND A DEVICE THEREOF FOR GENERATING THE ADAPTIVE TEMPLATE BASED ON PROCESSED SYMBOLS IN AN ENCODING SIDE AND A DECODING SIDE
METHOD FOR ENCODING A BINARY IMAGE BY USING AN ADAPTIVE TEMPLATE, A DEVICE THEREOF, A DECODING METHOD THEREOF, AND A DEVICE THEREOF FOR GENERATING THE ADAPTIVE TEMPLATE BASED ON PROCESSED SYMBOLS IN AN ENCODING SIDE AND A DECODING SIDE
PURPOSE: A method for encoding a binary image by using an adaptive template, a device thereof, a decoding method thereof, and a device thereof are provided to efficiently reflect correlation between symbols through generation of the template, thereby improving calculation complexity and compression efficiency of binary arithmetic coding.;CONSTITUTION: A correlation obtainment unit obtains correlation between each previous pixel and each surrounding pixel in a window by applying the window to the previous pixel and surrounding pixels of the previous pixel(1010). A correlation accumulation unit determines a relative position in the window which the correlation with the previous pixels is high based on the obtained correlation(1020). A template updating unit generates a template based on the relative position(1030). An arithmetic encoding unit encodes a current pixel by using the template(1040).;COPYRIGHT KIPO 2013;[Reference numerals] (1010) Obtain correlation between each previous pixel and each surrounding pixel in a window by applying the window with a predetermined size and shape to the previous pixel with a predetermined number and the surrounding pixel of the previous pixel; (1020) Determine a relative position in the window which the correlation with the previous pixel is high based on the correlation between each surrounding pixels in each previous pixel and the window; (1030) Generate a window template based on the relative position of the window with the high correlation; (1040) Encode a current pixel by using the template; (AA) Start; (BB) End
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