公开(公告)号：EP1538849A1

公开(公告)日：2005-06-08

申请号：EP04028353.3

申请日：2004-11-30

申请人： SEIKO EPSON CORPORATION

发明人： Nashida, Yukihiro

IPC分类号： H04N9/64 ,  G09G5/00

CPC分类号： H04N9/641 ,  G09G5/006 ,  G09G5/04 ,  H04N9/3179

摘要： The procedure of the invention acquires a maximum RB value, which is a largest value of an R signal component and a B signal component, on the assumption that the signal format of an input video signal is an RGB signal, and obtains an RGB probability corresponding to a degree of largeness of the maximum RB value. The procedure also acquires a minimum color difference value, which is a smallest value of a color difference signal component, on the assumption that the signal format of the input video signal is a Y/color difference signal, and obtains a color difference probability corresponding to a degree of smallness of the minimum color difference value. The procedure compares the RGB probability with the color difference probability and thereby determines whether the signal format of the input video signal is the RGB signal or the Y/color difference signal. This arrangement effectively enhances the accuracy of discrimination between the RGB signal and the Y/color difference signal.

摘要翻译： 假设输入视频信号的信号格式为RGB信号，本发明的程序获取作为R信号分量和B信号分量的最大值的最大RB值，并获得对应的RGB概率 达到最大RB值的大小。 假设输入视频信号的信号格式是Y /色差信号，该程序还获取最小色差值，其是色差信号分量的最小值，并且获得对应于 最小色差值的小程度。 该过程将RGB概率与色差概率进行比较，从而确定输入视频信号的信号格式是RGB信号还是Y /色差信号。 这种布置有效地提高了RGB信号和Y /色差信号之间的辨别精度。