The invention relates to a method for improving color plasma display image, characterized by measuring and drawing the red channel PDP display, luminance response curve Easy Access and blue channel, to determine the calibration curve of the color component of the color component based on the calibration curve, calculated by calculating the output level of each channel get the red channel value, each consisting of 256 values, Easy Access and blue channel correction table, the three correction table to the look-up table are added to the video processing. The method can better display the display effect of plasma display panel (PDP), and show the gray level and color brightness of the video image.
【技术实现步骤摘要】
本专利技术涉及从视频处理的角度提出的一种提高彩色等离子显示器图像清晰度的方法,属于等离子显示器图像显示
技术介绍
利用等离子显示屏(Plasma Display Panel)显示图像的方法,在1920年就在美国诞生了,但CRT的普遍使用,滞后了其研制的开发进程,1960年以后,这种研究逐渐从美国转移到日本,交流型PDP从IRINOIS大学转移到富士通直流型PDP从BAROUSU转移到NHK。从工作方式上分为交流(AC)PDP和直流(DC)PDP,ACPDP又分为对象放电型PDP和表面放电型PDP,我们今天所指的PDP,就是指交流表面放电型的PDP。原来AC型PDP被认为实现HDTV*256等级灰度的高等级目标,规格是困难的,随着分离显示期间和选址期间的高速灰度驱动法(地址/显示分离型子帧法被专利技术。)高等级灰度显示成为可能。在PDP中,因采用子帧法对于移动画面,会产生画质下降的伪轮廓问题,这就象人的脸一样,在进行流畅灰度变化部分产生明显的伪轮廓现象。PDP作为严格的数字化视频处理系统,包括下述步骤.NTSC/PAL数字解码并消除或者说是减少噪声。(decoding with artifactsuppression).时基校正和消除抖动(Timebase Correction and jitter removal) .基于运动检测的隔行逐行变换(Motion adaptive deinterlacing).运动自适应的噪声消除(Motion adaptive noise reduction).非线性带宽扩展.比例变换.色空间转换.色彩控制和γ ...
【技术保护点】
一种提高彩色等离子显示器(Plasma Display Panel)图像清晰度的方法,将被用于由视频解码器、模数转换器、图象系列处理器、PDP驱动电路、PDP专用开关电源和PDP显示模块组成的交流表面放电型PDP系统中,其特征在于在测量、绘出PDP显示屏模块的红色通道电光响应曲线,绿色通道电光响应曲线和蓝色通道电光响应曲线的基础上,确定各色彩分量的校正曲线,通过在0-256之间取值,计算出的各色彩分量的矫正表,以查表的方式加入到视频处理过程后端的校正查表处理电路中。
【技术特征摘要】
1.一种提高彩色等离子显示器(Plasma Display Panel)图像清晰度的方法,将被用于由视频解码器、模数转换器、图象系列处理器、PDP驱动电路、PDP专用开关电源和PDP显示模块组成的交流表面放电型PDP系统中,其特征在于在测量、绘出PDP显示屏模块的红色通道电光响应曲线,绿色通道电光响应曲线和蓝色通道电光响应曲线的基础上,确定各色彩分量的校正曲线,通过在0-256之间取值,计算出的各色彩分量的矫正表,以查表的方式加入到视频处理过程后端的校正查表处理电路中。2.根据权利要求1所述的提高等离子显示器图像清晰度的方法,其特征在于测量PDP显示屏模块的红色通道电光响应曲线,绿色通道电光响应曲线和蓝色通道电光响应曲线的方法如下设置PDP显示屏绿色通道G输入值为零,蓝色通道B输入值为零,让红色通道R输入值在0,1,2.......255变化,用亮度计测量PDP显示屏对应的输出亮度值,并绘制出PDP显示屏的红色通道的亮度响应曲线O_Gr(x,v);设置PDP显示屏红色通道R,蓝色通道B输入为零,让绿色通道G输入值在0,1,2.......255变化,用亮度计测量PDP显示屏对应的输出亮度值,并绘制出PDP显示屏的绿色通道的亮度响应曲线O_Gg(x,v);设置PDP显示屏红色通道R,绿色通道G输入为零,让蓝色通道B输入值在0,1,2........255变化,用亮度计测量PDP显示屏对应的输出亮度值,并绘制出PDP显示屏的蓝色通道的亮度响应曲线O_Gb(x,v)。3.根据权利要求1所述的提高等离子显示器图像清晰度的方法,其特征在于校正查表处理电路的算法如下在绘制出PDP显示屏的红色通道、绿色通道和蓝色通道的亮度响应曲线的基础上,确定校正曲线Cr(x,v)=1/(O_Gr(x,v)*I-Gr(x,v)),x取值在0到255之间,得到红色通道由256个数值构成的矫正表;Cg(x,v)=1/(O_Gg(x,v)*I-Gg(x,v)),x取值在0到255之间,得到绿色通道由256个数值构成的矫正表;Cb(x,v)=1/(O_Gb(x,v)*I-Gb(x,v)),x取值在0到255之间,得到蓝色通道由256个数值构成的矫正表;其中,I_Gr(x,v),I_Gg(x,v),I_Gb(x,v)分别为输入信号R,G,B各成分对应的电平亮度响应曲线。4.根据权利要求3所述的提高等离子显示器图像清晰度的方法,其特征在于红色通道由256个数值构成的矫正表如下0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x4,0x4,0x4,0x4,0x4,0x4,0x5,0x5,0x5,0x5,0x5,0x6,0x6,0x6,0x6,0x7,0x7,0x7,0x7,0x7,0x8,0x8,0x8,0x9,0x9,0x9,0x9,0xA,0xA,0xA,0xB,0xB,0xB,0xC,0xC,0xC,0xD,0xD,0xD,0xE,0xE,0xE,0xF,0xF,0x10,0x10,0x10,0x11,0x11,0x12,0x12,0x13,0x13,0x14,0x14,0x14,0x15,0x15,0x16,0x16,0x17,0x17,0x18,0x19,0x19,0x1A,0x1A,0x1B,0x1B,0x1C,0x1D,0x1D,0x1E,0x1E,0x1E,0x20,0x20,0x21,0x22,0x22,0x23,0x24,0x24,0x25,0x26,0x26,0x27,0x28,0x29,0x29,0x2A,0x2B,0x2C,0x2C,0x2D,0x2E,0x2F,0x30,0x3 1,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,0x50,0x52,0x53,0x54,0x55,0x56,0x58,0x59,0x5A,0x5B,0x5D,0x5E,0x5F,0x60,0x62,0x63,0x64,0x66,0x67,0x69,0x6A,0x6B,0x6D,0x6E,0x70,0x7 1,0x72,0x74,0x75,0x77,0x78,0x7A,0x7B,0x7D,0x7E,0x80,0x82,0x83,0x85,0x86,0x88,0x8A,0x8B,0x8D,0x8F,0x90,0x92,0x94,0x95,0x97,0x99,0x9B,0x9C,0x9E,0xA0,0xA2,0xA4,0xA5,0xA7,0xA9,0xAB,0xAD绿色通道由256个数值构成的矫正表如下,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0...
【专利技术属性】
技术研发人员:刘一清,
申请(专利权)人:上海真空电子数字技术发展有限公司,
类型:发明
国别省市:31[中国|上海]
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