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公开(公告)号:KR1020030038058A
公开(公告)日:2003-05-16
申请号:KR1020010069471
申请日:2001-11-08
Applicant: 한국전자통신연구원
IPC: G06T3/00
Abstract: PURPOSE: An apparatus and a method for extending linear color gamut of a color device are provided to linearly extend color gamut when relatively narrow color gamut is converted into a relatively wide color gamut, to improve picture quality. CONSTITUTION: An apparatus for extending linear color gamut of a color device includes an input color coordinate converter(210), a color gamut extension unit(220), a color gamut storage unit(230), and an output color coordinate converter(240). The input color coordinate converter receives red, green and blue color coordinates from a color device(100) with narrow color gamut to convert the color coordinates into color coordinates of luminance, chrominance and hue. The color gamut extension unit extends color attributes of luminance, chrominance and hue according to linear extension equation to convert the color attributes. The color gamut storage unit controls the color attribute information extended by the color gamut extension unit not to come out of a relatively wide color gamut device(300). The output color coordinate converter inverse-transforms the color attribute information into red, green and blue color coordinates to transmit the color coordinates to the wide color gamut device.
Abstract translation: 目的:提供一种用于延长彩色装置的线性色域的装置和方法,用于当相对窄的色域被转换成相对较宽的色域时线性地扩展色域,以提高图像质量。 构成:用于延伸彩色装置的线性色域的装置包括输入颜色坐标转换器(210),色域扩展单元(220),色域存储单元(230)和输出颜色坐标转换器(240) 。 输入颜色坐标转换器从具有窄色域的彩色设备(100)接收红,绿和蓝色坐标,以将色坐标转换为亮度,色度和色调的色坐标。 色域扩展单元根据线性扩展方程扩展亮度,色度和色调的颜色属性,以转换颜色属性。 色域存储单元控制由色域扩展单元扩展的颜色属性信息不会从较宽的色域设备(300)中出来。 输出颜色坐标转换器将颜色属性信息逆变换为红色,绿色和蓝色坐标,以将颜色坐标传输到宽色域设备。