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发明名称
运用影像梯度变化的半色调影像处理方法
摘要
一种半色调影像处理方法包含下列步骤:计算影像中像素的梯度量值及梯度方向;依目前处理像素与邻近像素之像素值的差异及目前处理像素的梯度量值,设定半色调影像门槛值;利用该半色调影像门槛值将目前处理像素二值化,以取得相应于目前处理像素构成半色调影像的半色调结果值;计算目前处理像素之像素值与该半色调结果值两者之差,作为误差值;以及依目前处理像素与尚未处理之邻近像素的梯度量值、梯度方向,来决定一扩散比例系数,并依照该扩散比例系数将该误差值扩散至尚未处理之邻近像素。
申请公布号
TWI401616
申请公布日期
2013.07.11
申请号
TW097146320
申请日期
2008.11.28
申请人
国立台湾科技大学 台北市大安区基隆路4段43号
发明人
锺国亮;潘映霖;许维凌;杨维宁;陈秋华
分类号
G06T5/00
主分类号
G06T5/00
代理机构
代理人
刘育志 台北市大安区敦化南路2段77号19楼
主权项
地址
台北市大安区基隆路4段43号
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