Device for acquiring information of polarimetric image

Abstract

The invention discloses a device for acquiring information of a polarimetric image. The device comprises a synchronous adjusting mechanism, a polarizer bracket, high definition camera shooting modules and a computer terminal, wherein the high definition camera shooting modules are installed at the upper part of the synchronous adjusting mechanism and are connected with the computer terminal through USB (universal serial bus) data lines, and the polarizer bracket is a cylindrical sleeve and is arranged outside the synchronous adjusting mechanism and the high definition camera shooting modules in a sheathed manner. The image acquiring part comprises the three high definition camera shooting modules, three linear polarization lens and the three USB data lines, so that the polarimetric image data of three channels are acquired synchronously, and the optical axis distances of the cameras of the three channels are adjusted synchronously; the polarimetric direction of the polarimetric lens can be adjusted arbitrarily, so that the adaptability of the device is improved. A necessary solution is offered for automatically acquiring the polarimetric image and improving the accuracy of a later specific application algorithm. The device adopts an automatic centering motion device of a self-centering three-revolution chuck, and can guarantee the accuracy of information of the acquired image.

Description

technical field [0001] The invention relates to an image information acquisition technology, in particular to a polarization image information acquisition device, and relates to interdisciplinary fields such as mechanism science and data acquisition. Background technique [0002] The acquisition of polarization image information plays an important role in atmospheric polarization model testing and weather degradation image restoration methods based on physical models. The polarization information of light is generally described by Stokes vectors (I, Q, U, V), where I represents light intensity, Q represents the difference between 0°-90° linearly polarized light components; U represents 45° and 135° linearly polarized light components The difference; V represents the difference between right-handed and left-handed circularly polarized light components. Since there are very few circularly polarized components in the natural atmospheric background and the polarization effect o...

AI Technical Summary

Problems solved by technology

Since there are very few circularly polarized components in the natural atmospheric background and the polarization effect of sunlight reflected by the target object, it is usually assumed that V=0. Therefore, as long as the light intensity of linearly polarized light in two or more different directions is measured, it can be calculated Stokes vector (I, Q, U), and then calculate the polarization degree and polarization angle and other information, so as to estimate other physical parameters according to the needs. There are few researches on polarization visual information acquisition methods at home and abroad. The main characteristics are single channel, split step acquisition, which is not conducive to automatic application, and the accuracy is poor

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