Airborne hyperspectral image geometric correction device based on three-way array camera and airborne hyperspectral image geometric correction method thereof

A hyperspectral image and geometric correction technology, applied in the field of spectrum technology, achieves the effects of low cost, high precision, and fast calculation speed

Active Publication Date: 2017-09-29
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

The whole set of devices can be used with Y-12 transport aircraft

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  • Airborne hyperspectral image geometric correction device based on three-way array camera and airborne hyperspectral image geometric correction method thereof
  • Airborne hyperspectral image geometric correction device based on three-way array camera and airborne hyperspectral image geometric correction method thereof
  • Airborne hyperspectral image geometric correction device based on three-way array camera and airborne hyperspectral image geometric correction method thereof

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Embodiment Construction

[0033] The specific embodiment of the present invention is described in further detail below in conjunction with accompanying drawing:

[0034] figure 1 is a schematic diagram of the geometric correction device for airborne spectral images. It consists of a transport aircraft, an airborne stabilized platform controller 1, an airborne stabilized platform 2, a fixed bracket 3, an inertial attitude measurement module 4, a high-speed area array CMOS camera 5, and a hyperspectral camera 6. The airborne stabilizing platform 2 is fixed horizontally on the window of the transport aircraft, and the z-axis is in the same direction as the vertical line on the ground. Under the control of the motor, and through the feedback control of the inertial attitude measurement module 4, the x and y axes can be stabilized at ±0.05°-±0.1°. There is a fixed support 3 on the airborne stable platform 2, and a hyperspectral camera 6 is fixed on the 3. The three high-speed area-array CMOS cameras are...

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Abstract

The present invention discloses an airborne hyperspectral image geometric correction device based on a three-way array camera and an airborne hyperspectral image geometric correction method thereof. A low-cost airborne stable platform is employed to realize rough direction of the visual axis of a camera and allow the attitude angle of a hyperspectral camera to the ground to be stabilized in the range of +_0.05 degrees and +-0.1 degrees. Three high-speed area array CMOS cameras being in consolidation with the hyperspectral camera are employed to perform continuous imaging of the earth's surface, and the feature matching of the images of front and back area arrays is employed to measure the accurate attitude angle of the hyperspectral camera. The attitude angle measured by employing the high-speed area array CMOS cameras is employed to perform pixel-grade real-time geometric correction for the hyperspectral images. The problem of geometric correction of the hyperspectral images through adoption of the low-cost airborne stable platform is solved. The method is simple in structure, low in cost, high in precision and fast in calculation speed and can perform pixel-grade real-time geometric correction of the images.

Description

Technical field: [0001] The invention relates to the field of spectrum technology and remote sensing measurement, in particular to an airborne hyperspectral image geometric correction device and a method thereof, which are suitable for light, small, low-cost and high-resolution spectral remote sensing systems. Background technique: [0002] The push-broom hyperspectral camera is a hyperspectral imager that adopts linear array push-broom imaging. The push-broom hyperspectral camera is often combined with an airborne platform. It has the characteristics of multiple spectral bands, continuous bands, and integration of maps and spectra, and can provide rich surface information. At present, it has been widely used in rock and mine identification, vegetation type distinction, ecological environment monitoring and other fields. [0003] During the imaging process, due to the aircraft movement and airflow images, the hyperspectral data obtained by push-broom imaging will have large...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80G01J3/28
CPCG06T7/80G01J3/2823Y02A40/10
Inventor 王跃明金伟东刘敏舒嵘王建宇
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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