彩色成像原理和vonK iies 色适应理论

The power spectrum E(λ) of the light that illuminates a scene is reflected by the objects according to their reflectance R(λ). The sensors of an image acquisition device are usually equipped
with a mosaic color array composed of micro lenses. This color filter array (CFA) filters the light reflected by the scene with different sensitivities Si(λ),

producing three analogical levels ρi., as shown in Figure 1, where the image acquisition scheme of a digital color sensor device is summarized.

E(λ)：光照函数

R(λ)：物体表面反射系数

Si(λ)：光敏函数