公开(公告)号：US20150010248A1

公开(公告)日：2015-01-08

申请号：US14155894

申请日：2014-01-15

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Yu-Hsing CHUANG ,  Yu-Pin CHANG ,  Chih-Yuan YANG ,  Feng-Ting PAI

IPC: G06T5/00

CPC classification number: G06T5/009 ,  G06T5/007

Abstract: An image processing apparatus for adjusting the luminance of a target pixel of an image is provided. The target pixel includes original pixel data and corresponds to a mask value. The image processing apparatus includes a luminance detection unit, a luminance compensation unit and a mapping unit. The luminance detection unit generates an original luminance value according to the original pixel data. The luminance compensation unit adjusts the original luminance value according to a non-linear function to generate a compensated luminance value. The mapping unit generates adjusted pixel data according to the compensated luminance value. The non-linear function at least includes a first monomial function, which has a base part associated with an inverse value of the original luminance value and an exponent part associated with the mask value.

Abstract translation: 提供了一种用于调整图像的目标像素的亮度的图像处理装置。 目标像素包括原始像素数据并对应于掩码值。 图像处理装置包括亮度检测单元，亮度补偿单元和映射单元。 亮度检测单元根据原始像素数据生成原始亮度值。 亮度补偿单元根据非线性函数来调整原始亮度值，以生成补偿亮度值。 映射单元根据补偿的亮度值生成调整后的像素数据。 非线性函数至少包括第一单项式函数，其具有与原始亮度值的逆值相关联的基本部分和与掩模值相关联的指数部分。