Stokes Parameter-Based Object Enhancement in Passive Millimeter-Wave Imaging

Passive millimeter wave (PMMW) imaging has many applications, and personnel security inspection is one of its important applications. The previous imaging system often only uses a single polarization and so does not take full advantage of the multi-polarization information. In different polarization images, the contrast between local targets and body background is different, and the optimal contrast performance of all local targets cannot be obtained in any single polarized image at the same time. To give full use to the local feature advantages of multiple polarized images, this paper proposes a subregional fusion method for object enhancement using Stokes parameters, which can fuse the optimal local regions in different polarized images, so that the object and body background in the fusion image have the optimal contrast.