Alpha通道(Alpha Channel):在电脑图形中,每个像素都包含三个色彩信息通道——红、绿、蓝,在24位的图形中,每个通道有包含了8位色彩深度。如果图形卡具有32位总线,附加的8位信号就被用来保存不可见的透明度信号以方便处理用,这就是Alpha通道。白色的alpha像素用以定义不透明的彩色像素,而黑色的alpha像素用以定义透明像素,黑白之间的灰阶用来定义半透明像素。 非自然信号(Artifact):简单的说,就是指在画面中随机出现的游离像素,可能产生非自然信号的原因很多,包括 Alpha Channel: In computer graphics, each pixel contains three channels of color information - red, green and blue, each containing 8-bit color depth in a 24-bit graphic. If the graphics card has a 32-bit bus, an additional 8-bit signal is used to hold the invisible transparency signal for processing purposes. This is the alpha channel. White alpha pixels are used to define opaque color pixels, while black alpha pixels are used to define transparent pixels. Black and white grayscales are used to define translucent pixels. Artifact: In simple terms, it refers to the free pixels randomly appearing in the picture. There are many reasons that unnatural signals may be generated, including