公开(公告)号：KR1020130056620A

公开(公告)日：2013-05-30

申请号：KR1020110122330

申请日：2011-11-22

Applicant: 슈퍼바운드코리아(주)

Inventor： 이보라 ,  박현상

IPC: H04N5/243

CPC classification number: H04N5/3572 ,  H03K19/17728 ,  H03K19/20 ,  H04N2201/0426

Abstract: PURPOSE: A lens shadow distortion compensating method and a device thereof are provided to reduce the capacity of required memory by switching orthogonal coordinates to polar coordinates and applying a section linear model. CONSTITUTION: A lens shadow distortion compensating device receives coordinates of a pixel in a pixel array and calculates a middle value(S100,S120). The device determines a section including the middle value and applies the middle value to a linear approximation(S140,S160). The device reads a correction gain value corresponding to a calculated distance from a correction gain value LUT(LookUp Table) and compensates an input signal outputted from the pixel as the correction gain value(S180,S200). [Reference numerals] (S100) Receive the coordinate(x,y) of a pixel; (S120) Calculate a middle value; (S140) Determine a section(n) containing the middle value(S); (S160) Calculate a distance(r) by applying the middle value(S) to a linear approximation; (S180) Read a correction gain value corresponding to the distance(r) from LUT; (S200) Compensate an input signal outputted form the pixel with the correction gain value; (S220) Output the compensated input signal as an output signal

Abstract translation: 目的：提供透镜阴影失真补偿方法及其装置，通过将正交坐标切换为极坐标并应用截面线性模型来减小所需存储器的容量。 构成：透镜阴影失真补偿装置接收像素阵列中的像素的坐标并计算中间值（S100，S120）。 设备确定包括中间值的部分，并将中间值应用于线性近似（S140，S160）。 该装置从校正增益值LUT（LookUp Table）读取与计算出的距离对应的校正增益值，并将从该像素输出的输入信号补偿为校正增益值（S180，S200）。 （附图标记）（S100）接收像素的坐标（x，y） （S120）计算中间值; （S140）确定包含中间值（S）的段（n）; （S160）通过将中间值（S）应用于线性近似来计算距离（r）; （S180）从LUT读取与距离（r）对应的校正增益值; （S200）用校正增益值补偿从像素输出的输入信号; （S220）输出补偿输入信号作为输出信号