The invention discloses an 1/4 sub-pixel interpolation method, the interpolation of the sub pixels around two adjacent integer pixel (A2 and A3) between the area is divided into 4 equal parts, through the adjacent 4 integer pixel (A1, A2, A3, A4) the variation of calculated between A2 and A3 slope 4 area: the first slope (K1), second (K2), third slope slope slope (K3), fourth (K4) value; according to the first slope (K1), second (K2), third slope slope slope (K3), fourth (K4) interpolation coefficient values obtained sub-pixel corresponding interpolation; according to the interpolation coefficients of second integer pixel (A2), third pixels (A3) interpolation precision between the regional 1/4. In the interpolation process, the rate of change between the brightness values of pixels is taken into account, and the change between adjacent pixels can be well simulated, and the encoding effect is good and the calculation is simple.
【技术实现步骤摘要】
【技术保护点】
1.一种1/4亚像素插值方法,其特征在于,所述方法包括以下步骤:将待插值亚像素点左右相邻两整像素点(A2和A3)之间的区域分成4等份;获取每份之间的斜率第一斜率(k1)、第二斜率(k2)、第三斜率(k3)、第四斜率(k4)的值;根据第一斜率(k1)、第二斜率(k2)、第三斜率(k3)、第四斜率(k4)的值获取待插值亚像素点对应的插值系数;根据所述插值系数对第二整像素点(A2)、第三整像素点(A3)之间的区域进行1/4精度的插值。
【技术特征摘要】
【专利技术属性】
技术研发人员:张智雄,
申请(专利权)人:深圳市融创天下科技发展有限公司,
类型:发明
国别省市:94
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