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    • 9. 发明专利
    • Conversion apparatus and conversion method of image signal
    • JP3757560B2
    • 2006-03-22
    • JP20682897
    • 1997-07-31
    • ソニー株式会社
    • 知之 大月哲二郎 近藤
    • H04N1/60H04N5/208H04N1/46H04N9/68
    • PROBLEM TO BE SOLVED: To obtain a natural output image with improved resolution. SOLUTION: An input image signal Vin is converted into an output image signal Vout with many more pixel numbers than those of the signal Vin. A color distribution estimate device 12 estimates a color distribution of each pixel area being a component of a photographing object relating to the input image signal Vin. That is, the device 12 detects a pixel area where an edge whose color changes from a 1st state into a 2nd state is in existence among pixel areas configuring the photographing object and detects its edge position. A pixel synthesizer 13 detects a pixel area with the edge and its edge position among each pixel area relating to the output image signal Vout based on the estimate result of the color distribution from the color distribution estimate device 12 and uses signals of each pixel being a component of the input image signal Vin based on the detection result to generate signals of each pixel being a component of the output image signal Vout. In the case of obtaining the signals of each pixel being a component of the output image signal Vout, since the color distribution of each pixel area is taken into account, a natural output image with improved resolution is obtained.