Method for adaptively determining optimal polarization orientation in polarization vision system

A technology of vibration transmission direction and vision system, which is applied in image data processing, instruments, calculations, etc., and can solve the problem of being unable to quickly and objectively determine the transmission direction of polarizers.

Inactive Publication Date: 2012-09-12
HEFEI UNIV OF TECH
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Problems solved by technology

[0006] In order to overcome the defect that the existing polarization vision system cannot quickly and objectively determine the polarization direction of the polarizer, the present invention provides an adaptive polarizat

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  • Method for adaptively determining optimal polarization orientation in polarization vision system
  • Method for adaptively determining optimal polarization orientation in polarization vision system
  • Method for adaptively determining optimal polarization orientation in polarization vision system

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[0048] Such as Figure 4 As shown, the method of adaptively determining the optimal transmission direction of the polarizer in the polarization vision system includes the following steps:

[0049] 1) Use the polarization images of any three polarizers with known transmission directions to synthesize the polarization images of any transmission direction;

[0050] When the angle between the transmission direction of the polarization image and the reference direction (selected 0° direction) is θ, the polarization image of any transmission direction can be expressed as:

[0051] I ( θ ) = 1 2 I + 1 2 Q cos 2 θ + 1 2 U sin 2 θ - - - ( 1 )

[0052] I, Q, U are the Stokes vectors of the polarization image, I(θ) represents the intensity of the emitted light when the polarization image is in the θ transmission direction, I represents the total light intensity, and Q represents the polarization image component in the X-axis d...

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Abstract

The invention discloses a method for adaptively determining the optimal polarization orientation in a polarization vision system. The method comprises the following steps of: compositing polarization images in any polarization orientation by means of any three polarization images in the known polarization orientation; and evaluating the definition of the polarization images so as to determine the optimal polarization orientation for the polarization vision system. The invention provides the inexpensive, objective and convenient method, so that the problem that the orientation of a polarizer in the conventional polarization vision system is difficult to determine is solved; and after the optimal polarization orientation is determined, the influence of stray light can be eliminated to the greatest extent, and the imaging quality is greatly improved.

Description

technical field [0001] The invention relates to the field of polarization vision systems, in particular to a method for adaptively determining the optimal vibration transmission direction of a polarizer in a polarization vision system. Background technique [0002] Polarization vision systems are more and more widely used, such as polarization identification and polarization navigation. This type of polarization vision system uses multiple polarization images with known transmission directions to obtain the Stokes vector or E vector of polarized light as a feature for target recognition. or navigation. This type of vision system has no special requirements on the vibration transmission direction of the polarizer. Another important use of polarization vision is to reduce or eliminate the influence of stray light on imaging. [0003] The surface of many detected objects will emit messy glare or there is strong backlight in the environment, such as shooting objects through wa...

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Application Information

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IPC IPC(8): G06T7/00G06T5/50
Inventor 方帅王浩姚宏亮李俊照何艳秦彤
Owner HEFEI UNIV OF TECH
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