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    • 1. 发明授权
    • Method of luminance compensation for a camera lens using multiline interpolation
    • 使用多行插值的相机镜头的亮度补偿方法
    • US08045039B2
    • 2011-10-25
    • US12458038
    • 2009-06-30
    • Cheng-Huei ChiangShu-Ching Hsieh
    • Cheng-Huei ChiangShu-Ching Hsieh
    • H04N5/225G06K9/32
    • H04N5/335H04N5/3572
    • Provided is a method of luminance compensation for a camera lens by performing a multiline interpolation algorithm. Preferably, a plurality of directional lines are radially arranged on a curved surface of the lens. Sampling dots are then designated along the directional lines in equal or variant distances. Steps including a step of determining the location of a target for luminance compensation, a step of obtaining adjacent directional lines by referring to a slope at the target, a step of calculating the correction values and the weights for interpolation are further introduced. The interpolation algorithm is used to restore a correction plane of a whole image. A polynomial equation is preferably used to obtain two correction values of two directional lines with the same radius. Alternatively, a lookup table is introduced to find the two correction values. It's featured that a symmetric or asymmetric compensation for the camera lens is achieved.
    • 提供了一种通过执行多行插值算法对照相机镜头进行亮度补偿的方法。 优选地,多个方向线径向布置在透镜的曲面上。 然后沿相同或不同距离的方向线指定采样点。 进一步介绍了确定用于亮度补偿的目标的位置的步骤,通过参照目标的斜率获得相邻方向线的步骤,计算校正值的步骤和用于插值的权重的步骤。 插值算法用于恢复整个图像的校正平面。 优选使用多项式方程来获得具有相同半径的两条方向线的两个校正值。 或者,引入查找表以找到两个校正值。 其特征在于实现了相机镜头的对称或非对称补偿。
    • 5. 发明申请
    • Method of luminance compensation for a camera lens using multiline interpolation
    • 使用多行插值的相机镜头的亮度补偿方法
    • US20100328523A1
    • 2010-12-30
    • US12458038
    • 2009-06-30
    • Cheng-Huei ChiangShu-Ching Hsieh
    • Cheng-Huei ChiangShu-Ching Hsieh
    • G06K9/36H04N5/235
    • H04N5/335H04N5/3572
    • Provided is a method of luminance compensation for a camera lens by performing a multiline interpolation algorithm. Preferably, a plurality of directional lines are radially arranged on a curved surface of the lens. Sampling dots are then designated along the directional lines in equal or variant distances. Steps including a step of determining the location of a target for luminance compensation, a step of obtaining adjacent directional lines by referring to a slope at the target, a step of calculating the correction values and the weights for interpolation are further introduced. The interpolation algorithm is used to restore a correction plane of a whole image. A polynomial equation is preferably used to obtain two correction values of two directional lines with the same radius. Alternatively, a lookup table is introduced to find the two correction values. It's featured that a symmetric or asymmetric compensation for the camera lens is achieved.
    • 提供了一种通过执行多行插值算法对照相机镜头进行亮度补偿的方法。 优选地,多个方向线径向布置在透镜的曲面上。 然后沿相同或不同距离的方向线指定采样点。 进一步介绍了确定用于亮度补偿的目标的位置的步骤,通过参照目标的斜率获得相邻方向线的步骤,计算校正值的步骤和用于插值的权重的步骤。 插值算法用于恢复整个图像的校正平面。 优选使用多项式方程来获得具有相同半径的两条方向线的两个校正值。 或者,引入查找表以找到两个校正值。 其特征在于实现了相机镜头的对称或非对称补偿。