提出一种新型偏振态成像法：以物体的偏振态作为成像物理量进行成像，获得成像物体偏振态的空间分布。引入偏振色度值表征偏振态，即将描述偏振态的三个Stokes参量转换成三基色RGB，用RGB的色度值（称为偏振色度值）来表征相应的偏振态，实现偏振态与偏振色度值之间以及偏振色度值与像素点之间的一一对应。在此基础上，采用Stokes参量测量方法对物体的偏振态进行逐点测量，获得成像物体的Stokes参量的空间分布，然后通过偏振色度值的分布来表征物体偏振态的空间分布，从而实现了偏振态成像。实验结果表明：偏振态成像法不但可以测量应力大小分布，还可以测量应力方向分布。

A new polarization imaging method, based on polarization state, is developed to obtain the spatial distribution of polarization state of object. A measurable physical quantity, called polarized-chromatic value, is introduced to describe the polarization state. The Stokes parameters employed to describe the polarization state are converted to three basic colors RGB, then the chromatic value of the RGB is used to describe the polarization state, therefore there is a one-to-one relationship between the polarized-chromatic value and the polarization state, and the polarized-chromatic value and the pixels. On this basis, the Stokes parameters measurement method is used for object point measurement to obtain the spatial distribution of Stokes parameters of the object. Then through the distribution of polarized-chromatic value, space distribution of the polarization state of the object is characterized, and thus the polarization imaging is realized. The experimental results show that the polarizaion state imaging method not only can measure the distribution of the stress size, but also measure the distribution of the stress direction.