Why does the scanner have different color difference feedback when scanning different materials?

Scanning device: Epson Expression 11000XL
六线交替 矩阵CCD
氙光源灯管

Scanning products: cloth surface, leather surface
在实际使用时发现，扫描布面时色差较小，扫描出来的图片大多可以直接使用，但是扫描高饱和度的布面时，扫描出来的图片饱和度较低；
另外扫描皮面时问题很大，尤其是哑光的皮面（合成皮、真皮等）扫描出来的颜色和肉眼看到的颜色差别很大（大多数的皮面都偏黄、偏绿），都需要对图片后期调色。

The reason for the color difference of the scanner when scanning products of different materials may involve multiple factors, including the light source, the surface characteristics of the material, the color management system of the scanner, etc. Possible causes and solutions:

· Light source characteristics:

· Your scanner uses a xenon light source tube, which may reflect differently on different materials. Cloth surfaces are usually diffuse, while leather surfaces, especially matte leather surfaces, may have more complex reflection characteristics, resulting in inaccurate color reproduction.

· Material surface characteristics:

The cloth surface usually has a more uniform surface structure, and the light reflection is more uniform, so the color difference is small.

Leather surfaces, especially matte leather surfaces, may have irregular texture and gloss changes, which can affect the reflection and absorption of light, causing the scanning results to be different from the colors observed by the naked eye.

Scanner color management:

· The scanner's color management system may have different color reproduction capabilities for different materials. High-saturation cloth surfaces may be out of the scanner's color gamut, resulting in lower saturation.

The color deviation of the leather surface may be due to the color calibration of the scanner not being suitable for this material.

Solution:

1. Calibrate the scanner:

Calibrate the scanner with a color calibration tool to ensure that its color management system accurately restores the colors of different materials.

2. Adjust the scan settings:

When scanning high-saturation cloth or leather surfaces, try adjusting the scanner's color settings, such as brightness, contrast, and saturation.

· Post-processing:

Translate the scanning results with color correction, especially for the skin scan results, to achieve a closer visual effect.

Using different light sources:

If possible, try scanning with a different type of light source to see if it can improve the color difference.