Large-field-of-view regional multi-level detection infrared imaging system based on spherical lens

Abstract

The invention discloses a large-field-of-view regional multi-level detection infrared imaging system based on a spherical lens. The system is characterized by comprising the homocentric spherical lens(10) and a camera array (20), wherein the camera array (20) comprises a plurality of cameras (201) which are arranged in X rows and Y columns, and all the cameras (201) are arranged in a spherical structure; the homocentric spherical lens (10) is used for collecting infrared radiation energy of a scene to form a primary curved image plane; and the camera array (20) is used for segmenting the primary curved image plane, performing relay imaging on the segmented primary curved image plane and obtaining a full-field-of-view image through image stitching processing. Through the infrared imaging system, the defects of structural complexity and poor imaging quality of gaze-type infrared imaging alarm equipment during large-field-of-view wide-area target search and small-field-of-view high-precision target recognition and tracking are effectively relieved.

Description

technical field [0001] The invention belongs to the technical field of optical imaging, and in particular relates to a ball-lens-based large field of view sub-area multi-stage detection infrared imaging system. Background technique [0002] With the continuous development of infrared imaging warning equipment, people have put forward higher requirements for the multi-level detection technology of large field of view wide-area target search and small field of view high-precision target recognition and tracking. [0003] At present, scanning-based infrared imaging warning equipment has been widely used, which can realize the search and positioning of object objects to a certain extent, but the current scanning infrared imaging warning equipment has complex scanning mechanism, long field of view scanning time and Due to defects such as high probability of missed detection, staring imaging technology is gradually applied to infrared imaging warning equipment. In order to make up...

AI Technical Summary

Problems solved by technology

[0003] At present, scanning-based infrared imaging warning equipment has been widely used, which can realize the search and positioning of object objects to a certain extent, but the current scanning infrared imaging warning equipment has complex scanning mechanism, long field of view scanning time and Due to defects such as high probability of missed detection, staring imaging technology is gradually applied to infrared imaging warning equipment. In order to make up for the shortcomings of large field of view search caused by canceling the scanning mechanism, it is usually realized by panoramic fisheye lens imaging. The application of large field of view imaging and zoom structure also realizes the ability of integrated detection of large field of view wide area target search and small field of view target precise identification

[0004] However, the staring imaging method based on the panoramic fisheye lens still has the disadvantages of large geometric distortion of the acquired image, uneven illumination of the image surface, and difficulty in effectively realizing high-resolution detection with a large imaging range.

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