Abstract: In order to solve the problem of imaging deviation caused by the different position of optical
axis of multi channel parallel simultaneous polarization imaging system, a multi source image fusion
optical front-end is designed to research real time image registration of three different coordinates’
polarization images. First, we install a light wedge within the system structure based on the parallel
optical axis. Then we calculate the imaging parallax of different field image and obtain the parameters
of affine transformation that correspond with each pixel of three directions polarization image.
According to the parameters, a pixel matching table storage was established. At last we call affinity
address and the corresponding weights by looking-up the table directly to complete three directions
polarization image registration. Experimental results indicate that this design can accurately achieve the
three directions polarization image registration in real-time, it avoid pseudo polarization phenomenon
which caused by deviation of the source images. The polarization image which is obtained after
registration can accurately reflect the polarization information of objectives, and it can also register the
polarization images in real time.

Key words: polarization image, image registration, parallel optical axis, binocular parallax, affine
transformation