公开(公告)号：US20080037867A1

公开(公告)日：2008-02-14

申请号：US11878782

申请日：2007-07-26

Applicant: Seung-sin Lee ,  In-ji Kim ,  Won-hee Choe ,  Du-sik Park

Inventor： Seung-sin Lee ,  In-ji Kim ,  Won-hee Choe ,  Du-sik Park

IPC: G06K9/00

CPC classification number: H04N9/68

Abstract: Provided is an image display device, more particularly, an apparatus and method that can reduce power consumption and prevent image characteristics from being degraded in an image display device using a multicolor light source. The image display device includes a histogram analysis unit calculating a parameter representative of an input image on the basis of a histogram of the input image, a model selection unit analyzing the parameter and selecting a representative model including the input image among a plurality of representative models, a luminance reduction amount calculation unit calculating a luminance reduction amount for each color light source of the input image on the basis of a maximum luminance reduction rate corresponding to the selected model, a power reduction amount calculation unit calculating a power reduction amount for each color light source according to the luminance reduction amount on the basis of a power characteristic of each color light source, and a power control unit supplying power reduced by the power reduction amount to each color light source.

Abstract translation: 提供了一种图像显示装置，更具体地，涉及一种能够降低功耗并防止图像特性在使用多色光源的图像显示装置中劣化的装置和方法。 图像显示装置包括直方图分析单元，其基于输入图像的直方图来计算表示输入图像的参数;分析参数的模型选择单元，以及在多个代表模型中选择包括输入图像的代表模型 ，亮度降低量计算单元，基于与所选择的模型相对应的最大亮度降低率，计算输入图像的每个颜色光源的亮度降低量;功率降低量计算单元，计算每个颜色的功率减少量 基于每个彩色光源的功率特性根据亮度降低量的光源;以及功率控制单元，其通过功率减少量减少到每个彩色光源的功率。

公开(公告)号：US20070081193A1

公开(公告)日：2007-04-12

申请号：US11544620

申请日：2006-10-10

Applicant: Seung-sin Lee ,  Du-sik Park ,  Aron Baik ,  Chang-yeong Kim

Inventor： Seung-sin Lee ,  Du-sik Park ,  Aron Baik ,  Chang-yeong Kim

IPC: H04N1/409

CPC classification number: G06T3/40

Abstract: A method and apparatus for expanding bit resolution using local information of an image receives an input image. First, second and third threshold value used to enhance bit resolution, to detect a texture and to detect a pattern, respectively, are determined considering global information of the input image. A texture existing in a mask region composed of surrounding pixels within a predetermined range around a current pixel is determined using the second threshold value. A regularly repeated pattern existing in the mask region is determined using the third threshold value if no texture exists in the mask region. The first threshold value is decreased if a texture or pattern exists in the mask region. Values of mask region pixels are adjusted depending on the first threshold value, and bit resolution of the current pixel value is enhanced using a resultant value obtained by filtering the adjusted pixel values.

Abstract translation: 使用图像的局部信息来扩展位分辨率的方法和装置接收输入图像。 考虑输入图像的全局信息，确定用于增强比特分辨率，分别检测纹理和检测图案的第一，第二和第三阈值。 使用第二阈值确定存在于由当前像素周围的预定范围内的周围像素构成的掩模区域中的纹理。 如果掩模区域中没有纹理，则使用第三阈值来确定存在于掩模区域中的规则重复图案。 如果掩模区域中存在纹理或图案，则第一阈值减小。 根据第一阈值调整掩模区域像素的值，并且使用通过对调整后的像素值进行滤波而获得的合成值来增强当前像素值的位分辨率。