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所谓色彩位数(色彩深度)是表示扫描仪所能辨析的色彩范围。通常扫描仪的色彩位数越多,就越能真实反映原始图像的色彩,扫描仪所反映的色彩就越丰富,所扫出图像的效果也越真实,当然也造成图形文件体积的加大。对于某些应用环境,扫描仪色彩位数指标,甚至比分辨率更重要。色彩位数的具体指标是用“位”(即2的多少次方)来描述,24位彩色表明扫描仪可分
The so-called color median (color depth) is that the scanner can distinguish the color range. Normally, the more the color bits of the scanner, the more true the color of the original image is reflected. The more colors the scanner reflects, the more the images are swept out, of course, resulting in the increase of the size of the graphic file. For some applications, the scanner’s color bit metrics are even more important than resolution. The specific indicators of the number of color bits is described by “bit ” (ie, the number of power of 2), the 24-bit color indicates the scanner is divisible