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METHOD FOR IMPROVING SHARPNESS BASED ON GRADIENT OF IMAGE
METHOD FOR IMPROVING SHARPNESS BASED ON GRADIENT OF IMAGE
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机译：基于图像梯度的清晰度提高方法
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摘要
PURPOSE: A method for improving image definition based on an image change size is provided to minimize noise in an image having a small image change size by adjusting the energy size of a high frequency component depending on the image change size. CONSTITUTION: An image definition improving device converts an image of a space area into a frequency area(S100). The device calculates an image change size of the space area of a unit image block from a coefficient of the unit image block(S200). The device calculates a definition strength parameter and calculates a definition weighted value from the calculated definition strength parameter(S300,S400). The device multiplies the calculated definition weighted value by the coefficient of the unit image block(S500). [Reference numerals] (AA) Start; (BB) End; (S100) Converting a frequency area; (S200) Calculating an image change size; (S300) Definition strength parameter; (S400) Definition weighted value; (S500) Improving definition;
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