公开(公告)号：US20080284914A1

公开(公告)日：2008-11-20

申请号：US12109423

申请日：2008-04-25

申请人： YI-FAN CHEN ,  YUN-HUNG SHEN ,  CHAO-TING KAO

发明人： YI-FAN CHEN ,  YUN-HUNG SHEN ,  CHAO-TING KAO

IPC分类号： H04N9/68

CPC分类号： H04N9/77

摘要： The present invention provides a device and an image adjustment method by simultaneously adjusting the luminance and the chrominance of an image. The device comprises a luminance analysis device, a contrast adjusting device, a luminance adjusting device, a chrominance compensation device and a luminance gain adjusting device. The method comprises steps of: generating a maximum input luminance signal, an average input luminance signal and a minimum input luminance signal according to an input luminance signal; generating a contrast value according to at least one of the maximum input luminance signal and the average input luminance signal; generating an input luminance offset according to the input luminance signal and the minimum input luminance signal; generating an output chrominance signal according to the contrast value and an input chrominance signal; and generating an output luminance signal according to the input luminance offset and the contrast value.

摘要翻译： 本发明通过同时调整图像的亮度和色度来提供装置和图像调整方法。 该装置包括亮度分析装置，对比度调节装置，亮度调节装置，色度补偿装置和亮度增益调节装置。 该方法包括以下步骤：根据输入亮度信号产生最大输入亮度信号，平均输入亮度信号和最小输入亮度信号; 根据最大输入亮度信号和平均输入亮度信号中的至少一个产生对比度值; 根据输入亮度信号和最小输入亮度信号产生输入亮度偏移; 根据对比度值和输入色度信号产生输出色度信号; 以及根据输入亮度偏移和对比度值产生输出亮度信号。