Motion speed detection sensor device and detection method based on Stokes vector optical flow

Abstract

The invention discloses a Stokes vector light stream acquisition device which faces sky polarized light and belongs to the field of positioning and navigation sensor design. The device mainly formed by main parts including a scale adjustable knob device, a sensor protective cover, an integrated polarized light stream sensor and the like. The device is designed in mechanical and electronic integration, polarization directions with three different angles are selected through a scale adjustable knob device on a shell, natural light is filtered by polarizing films in the above three different angles and is incident on the integrated polarized light stream sensor, polarized light information is converted into an electrical signal through a CMOS photosensitive element and a photovoltaic conversion module in the polarized light stream sensor, and a sensor integrated DSP image processing chip solves the electrical signal converted from the polarized light through an embedded Stokes vector and polarized light stream algorithm. And a recursive algorithm is adopted to solve a polarized light stream value, and errors in the calculation process are reduced. The device has advantages of simple structure, high integration level, stable performance, high robustness, accurate calculation result and the like.

Description

technical field [0001] The present invention belongs to optical navigation information acquisition and calculation equipment based on the combination of polarization optics theory and polarization optical flow algorithm, and specially designs the acquisition method and calculation method of polarized optical flow field and optical flow velocity value by using the polarization information of Stokes vector sensor. Involved patent classification number G physics G06 computing; reckoning; counting G06T general image data processing or generation G06T7 / 00 image analysis, for example from bitmap to non-bitmap G06T7 / 20 motion analysis. Background technique [0002] Optical flow method is an important method of moving image analysis at present, which refers to the movement speed of patterns in time-varying images. Optical flow expresses the change of the image, and because it contains the information of the target's motion, it can be used by the observer to determine the motion of ...

AI Technical Summary

Problems solved by technology

[0004] The traditional sky polarization navigation technology only uses the phase information of the polarization azimuth angle in polarized light, which contains richer polarization Stokes vector optical flow information, but has been ignored by researchers.

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