公开(公告)号：US20150332442A1

公开(公告)日：2015-11-19

申请号：US14277481

申请日：2014-05-14

Applicant: NOVATEK (SHANGHAI) CO., LTD. ,  NOVATEK MICROELECTRONICS CORP.

Inventor： Bo ZHAO ,  Guang-Zhi LIU ,  Jian-De JIANG

IPC: G06T5/00

CPC classification number: G06T5/007 ,  G06T2207/20012 ,  G06T2207/20021 ,  H04N1/6027

Abstract: An image processing method for adjusting the luminance and contrast of an input image comprises the following steps. First, local spatial luminance statistics is performed on the first pixels of the input image to generate a luminance image including a plurality of second pixels. Then, from a preset mapping curve group comprising a plurality of smooth mapping curves, a corresponding smooth mapping curve is selected for each of the second pixels according to an adjusting function. Next, the pixel values of the second pixels are adjusted according to the corresponding smooth mapping curves to generate an adjusted image.

Abstract translation: 用于调整输入图像的亮度和对比度的图像处理方法包括以下步骤。 首先，对输入图像的第一像素进行局部空间亮度统计，生成包括多个第二像素的亮度图像。 然后，从包括多个平滑映射曲线的预设映射曲线组中，根据调整功能为每个第二像素选择对应的平滑映射曲线。 接下来，根据对应的平滑映射曲线来调整第二像素的像素值以生成调整图像。

公开(公告)号：US20140009483A1

公开(公告)日：2014-01-09

申请号：US13782378

申请日：2013-03-01

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Guang-Zhi LIU ,  Jian-De Jiang

IPC: G06T15/50

CPC classification number: G06T15/50 ,  G09G2320/0252 ,  G09G2320/066 ,  H04N13/00 ,  H04N13/133 ,  H04N13/341

Abstract: An overdrive device includes a training unit, an analysis unit and a Contrast adjustment unit. The training unit establishes a luminance difference look-up table (LUT) having an R2 number of luminance differences. Each of the R2 number of luminance differences represents a luminance difference between a measured display luminance value and a target luminance value of a display device when each of first and second viewing angle images correspond to any value of a grayscale range R. With respect to first and second viewing angle input image data, for pixel data therein corresponding to a same pixel position, the analysis unit looks up the luminance difference LUT to obtain a looked-up luminance difference, and accordingly calculates a luminance difference index. The contrast adjustment unit partially adjusts the grayscale of the second viewing angle image according to the luminance value index to obtain headroom for an overdrive operation.

Abstract translation: 过载设备包括训练单元，分析单元和对比度调节单元。 训练单元建立具有R2亮度差的亮度差查找表（LUT）。 每个R2亮度差表示当第一和第二视角图像中的每一个对应于灰度范围R的任何值时，测量的显示亮度值和显示装置的目标亮度值之间的亮度差。关于第一 和第二视角输入图像数据，对应于相同像素位置的像素数据，分析单元查找亮度差值LUT以获得查找的亮度差，因此计算亮度差异指数。 对比度调整单元根据亮度值指标部分地调整第二视角图像的灰度，以获得过驱动操作的净空。

公开(公告)号：US20130300774A1

公开(公告)日：2013-11-14

申请号：US13755010

申请日：2013-01-31

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Guang-Zhi LIU ,  Jian-De JIANG ,  Xiao-Ming XU ,  Heng YU ,  Chun WANG

IPC: G09G5/10

CPC classification number: G09G5/10 ,  G09G2340/0428 ,  H04N9/646

Abstract: An image processing method is for subsampling a plurality of pixels of a frame. Related information about how subsample is applied to the pixels is generated. The pixels are subsampled so that respective numbers of bits of luminance components of the pixels are higher that respective numbers of bits of chroma components.

Abstract translation: 图像处理方法用于对帧的多个像素进行子采样。 生成将子样本应用于像素的相关信息。 像素被二次采样，使得像素的亮度分量的相应位数比色度分量的相应位数高。