Portable polarimetric image collecting and processing system

Abstract

The invention relates to a portable polarimetric image collecting and processing system which is characterized by comprising three polarization cameras, three decoders, a NADA FLASH memorizer, a RS-232 serial interface, a field programmable gata array (FPGA) processor, a digital signal processor (DSP) processor and encoder and a displayer. Analog video data collected by the three polarization cameras are decoded by the decoder connected with the three polarization cameras, and three-way digital video data are output to the FPGA processor to be pre-processed; the DSP processor receives data pre-processed by the FPGA and performs calculating of corresponding values of three-channel polarimetric images, then data is output to the encoder through a VP port and then displayed by the displayer, simultaneously by means of data interaction with the FPGA, the data are memorized into the NADA FLASH memorizer. The portable polarimetric image collecting and processing system adopts a system plate formed by the FPGA processor and the DSP processor to collect and process three-way polarimetric images at the same time, same scene and different degree of polarization, obtains multi-polarization degree pictures under the same environment, and facilitates tasks including later-stage defogging, target detecting, tracking and the like which are based on the polarimetric images.

Description

technical field [0001] The invention relates to the field of image acquisition, in particular to a portable polarization image acquisition and processing system, which is applied to the acquisition and processing of portable recorded polarization images. Background technique [0002] In the process of performing target detection, terrain mapping and other tasks on the portable ground, the acquisition and processing of polarization images is an important aspect to improve the detection efficiency and reliability of UAVs. There are differences in the polarization characteristics of ground targets and background light. Now research shows that polarization information not only has characteristics in analyzing atmospheric background parameters, but also has unique features in identifying ground targets. When the polarization image sensor is used to detect the ground, multi-dimensional information can be obtained, and the directionality of the polarization information is helpful f...

AI Technical Summary

Problems solved by technology

First of all, most of the acquisition and processing boards on the market are single-channel (or dual-channel) systems, which can only acquire one or (two) images, and cannot simultaneously acquire and process three polarization images at the same time

Furthermore, most of the acquisition and processing on the market are used in security, and the algorithms implemented are relatively simple, and it is impossible to complete the simultaneous processing of three-channel polarization images.

Third, for small platforms, the acquisition and processing boards on the market have obvious shortcomings in terms of design weight, volume, etc.

Images