Camera interchangeable dynamic light splitting imaging system and method thereof applied to high-dynamic imaging

Abstract

The invention relates to a camera interchangeable dynamic light splitting imaging system and a method thereof applied to high-dynamic imaging. The system realizes high-quality imaging of a target by adopting a combined imaging mode, combining a rear-end image fusion processing algorithm, and forming a structure of a main lens, an adaptor, a plurality of cameras and multi-source image fusion. According to the system, a single-sensor imaging mode of a one-time single light path of a conventional optical measuring system is changed into a dynamic light splitting multi-sensor imaging mode; key technologies, such as a large dynamic range imaging scheme, a light splitting ratio dynamic adjustable adaptor module and a multi-wave band high-dynamic image fusion algorithm, are broken through; the problems about integrated installing and synchronous imaging of a plurality of types of advanced sensors, multi-source image fusion, an enhanced processing algorithm and the like are solved; optical measurement information are acquired to the maximal extent; high-dynamic, high-speed, multi-wave band, high-resolution and high-quality imaging of a target in a target range is realized; the optical measurement level of a test in the target range is effectively improved.

Description

technical field [0001] The invention relates to the field of high dynamic imaging of sensors, in particular to a dynamic spectroscopic imaging system with interchangeable cameras and a method for applying it to high dynamic imaging. Background technique [0002] Due to its non-contact, intuitive, and high-precision features, optical measurement plays an irreplaceable role in tasks such as scene recording of new weaponry and equipment testing, analysis of abnormal phenomena, and attitude measurement. However, the current optical measurement equipment cannot meet the imaging requirements of high light intensity and dynamic range for new weapon test tasks at the same time. In the initial photometry of the target, the dynamic range of the target's optical radiation intensity is large, the spectral radiation information is rich, and the target details are more. Significant changes will take place, and the imaging effect of the entire process of the existing single set of equipme...

AI Technical Summary

Problems solved by technology

[0003] (1) The dynamic range of imaging cannot meet the needs of new advanced weapon tests

[0004] During the rocket launch and the initial flight stage of the missile, the high-brightness tail flame is accompanied by the projectile body. The huge difference in brightness between the two exceeds the imaging dynamic range of the existing optical measurement equipment, and it is impossible to obtain images of the dark target area and the bright flame area at the same time. , it is very easy to cause the problem of over-exposure of the tail flame or under-exposure of the projectile body;

[0005] (2) The optical lens and image sensor of the existing optical measurement equipment are fixedly matched, and the flexibility and applicability need to be improved

[0006] The replacement of large-aperture optical imaging systems is slow, and image sensor technology and image processing technology are advancing rapidly. However, the current optical primary mirror and imaging sensor are fixedly matched, so that once the equipment is equipped, the performance indicators are fixed and cannot keep up with various types of imaging. The rapid development of sensor technology, or need to spend a lot of manpower and material resources to redesign and produce new equipment

In addition, the equipment has a narrow range of applicability for different tasks;

[0007] (3) Image fusion of multi-source image sensors needs to be improved

However, the domestic Changchun Institute of Optics and Mechanics, Zhejiang University, Nankai University, Guizhou University, National University of Defense Technology, Tsinghua University and other units, as well as some optoelectronic research institutes and companies, have made great efforts in camera response curve generation, camera internal and external parameter calibration, image alignment and matching. Accurate, image splicing, optical lens design and manufacture, optical electromechanical structure design, image sensor application control design and other aspects have made good progress, formed the technical strength of sub-modules, and made breakthroughs in the application research of some new devices, For example, the combination of DMD and CCD used by Changchun Optical Machinery Institute to realize pixel-level exposure control can achieve an imaging dynamic range of 96dB, but there is still a lot of gap between the dynamic range of more than 120dB (or even more than 150dB) required by optical measurement and imaging.

Moreover, the current domestic high dynamic range imaging still lacks large-scale system-level design and application capabilities

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