Multispectral imaging system and method

Abstract

The invention provides a multispectral imaging system and method. The multispectral imaging system comprises a camera lens, a spectroscope, a refraction imaging sensor, a reflection imaging sensor anda control terminal. The camera lens is used for receiving a target light beam and irradiating the target light beam onto the spectroscope; the spectroscope is used for refracting the target light beam to the refraction imaging sensor and reflecting the target light beam to the reflection imaging sensor; the refraction imaging sensor and the reflection imaging sensor are used for forming a refraction digital image and a reflection digital image; and the control terminal is used for performing calibration and fusion on the refraction digital image and the reflection digital image to obtain a target image. The target light beam is directly imaged on the sensor after being received by the same camera lens and split by the spectroscope, shot objects are identical in position and imaging size,imaging of the refraction imaging sensor and imaging of the reflection imaging sensor are accurate to the pixel level, and registration is easy during image fusion; multiple sensors perform spectral imaging, the image acquisition rate is high, and the efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of photoelectric imaging, and in particular relates to a multispectral imaging system and method. Background technique [0002] A multispectral imaging system is an imaging system that can simultaneously obtain target images and spectral information. Widely used in military target detection, land census, vegetation analysis, climate change monitoring, crop yield estimation, material composition analysis, etc. [0003] Existing multi-spectral systems are divided into two types. One is to use an imaging sensor to switch filters through a moving device. Each time a filter is switched, an image of a specific spectrum is collected. After multiple acquisitions of images of a specific spectrum, multiple Fusion analysis of multiple spectral images. This imaging system uses the same imaging sensor and the position between the imaging sensor and the object remains unchanged. The pixel position relationship between im...

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Problems solved by technology

[0005] In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a multispectral imaging system and method, which overcomes the need to collect multiple images in sequence when the multispectral imaging system in the prior art uses an imaging sensor. Imaging takes time and the efficiency is low; when multiple imaging sensors are used, the positions of multiple sensors are different and fixed, the collected images have different viewing angles, and the registration and calibration of multispectral image fusion is complicated and difficult.

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