Huazhong University of Science and Technology

Xiaobing Dai

Tianxu Zhang

Li Liu

Xiangyan Liu

Hongtao Yu

Shoukui Yao

Jindong Fei

Hong Zhang

Xudong He

Pengcheng Gao

Tlanxu Zhang

Xlangyan Liu

Jianfei Ji

A method of measuring infrared spectral characteristics of a moving target, the method including: establishing a multi-dimensional and multi-scale model with infrared spectral features of an object-space target, and extracting an object-space region of interest measurement model; performing target detection on an actually measured infrared image, and identifying position information for each ROI of a target; tracking the target, to obtain the target's pixel differences between two frames, as well as a moving direction of the target, and performing motion compensation for the target; and scanning the target, and after successfully capturing an image of the target being tracked, controlling an inner framework to point to each target of interest, and according to moving-direction information of the target, performing N-pixel-size motion in a direction shifted by 90&#xb0; with respect to the moving direction, and activating a spectrum measuring module.

Method and device of measuring infrared spectral characteristics of moving target

A moving platform borne infrared image-spectrum associated detection system includes an optical hood, a broadband optical system, a two-dimensional servo system, an infrared optical fiber, a Fourier interference spectrum module, an image-spectrum associated detection processing module, a power supply module, and a display module. Incident light enters from the optical hood to the broadband optical system, and is split by a spectroscope. Transmitted light is focused by a long-wave imaging lens group on an infrared detector for imaging. Reflected light is focused by a broadband spectrum lens group to an optical fiber coupler, enters the Fourier interference spectrum module through the infrared optical fiber to form an interference pattern, and undergoes Fourier transform to obtain spectral data.

Moving platform borne infrared image-spectrum associated detection system and method

The present invention relates to a multiband common-optical-path image-spectrum associated remote sensing measurement system and method. The system includes an infrared window (), a two-dimensional rotating mirror (), a planar reflector (), a reflective multiband infrared lens system (), a Fourier interference spectrum module (), an image-spectrum associated processing module (), a power supply module (), a refrigerating module (), and a display module (); the incident light enters from the infrared window (), is reflected by the two-dimensional rotating mirror (), and then is reflected by the planar reflector () to the reflective multiband infrared lens system () and then is split by a spectroscope (); the transmitted light is focused by means of a convergent lens and is imaged on an infrared detector (); the reflected light is focused on an infrared optical fiber coupler () and enters the Fourier interference spectrum module () through an infrared optical fiber to form an interference pattern, and further, spectrum data is obtained through Fourier transformation; the image-spectrum associated processing module () effectively combines broadband spectrum imaging and non-imaging spectrum data, and controls the two-dimensional rotating mirror () to point to a target, thereby implementing intelligent remote sensing measurement. The present invention has capabilities of performing local scene region spectrum measurement and multi-target tracking spectrum measurement, has high speed, an appropriate data amount, and low cost.

Multiband common-optical-path image-spectrum associated remote sensing measurement system and method

The present invention discloses an infrared image-spectrum associated intelligent detection method and apparatus, including: first searching for targets in a field of view (FOV), and performing image-spectrum associated intelligent identification sequentially on the searched targets, that is, first performing infrared image target identification on each target, and if a detection identification rate is greater than a set threshold, outputting an identification result and storing target image data; otherwise, acquiring an infrared spectrum of the target, and performing target identification based on infrared spectrum features. The present invention further discloses an apparatus for performing target detection using the above method, and the apparatus mainly includes a two-dimensional scanning mirror, a multiband infrared optical module, a long-wave infrared (LWIR) imaging unit, a broadband infrared spectrum measuring unit, and a processing and control unit. The method and apparatus of the present invention are improvements and enhancements of the conventional infrared target detection method and device, and may be used for infrared image detection, infrared image-spectrum associated detection of the target and infrared spectrum collection of the target. Compared with the conventional infrared detection device, the present invention has a higher performance cost ratio, and can significantly improve the detection identification rate of the target.

Infrared image-spectrum associated intelligent detection method and apparatus

The present invention discloses a co-aperture broadband infrared optical system, belonging to the field of infrared optical system. The system realizes long wave infrared (LWIR) imaging and broadband infrared spectrum measurement, and solves the problems of limited optical path layout, large volume and high cost of an optical system. The present invention includes a Cassegrain lens, a spectroscope, a reflector, several lens groups, an FPA interface and an optical fiber interface. Light (2 &#x3bc;m&#x2dc;12 &#x3bc;m) is incident to the Cassegrain lens to be focused, then is split by the spectroscope, where 50% of the LWIR light (8 &#x3bc;m&#x2dc;10 &#x3bc;m) passes through the lens group for aberration correction, and the image plane is focused again at the imaging interface. The other 50% of the LWIR light (8 &#x3bc;m&#x2dc;10 &#x3bc;m) and the infrared reflected light (2 &#x3bc;m&#x2dc;8 &#x3bc;m and 10 &#x3bc;m&#x2dc;12 &#x3bc;m) pass through the lens group, and are reflected by the reflector, then focused at the optical fiber interface. The present invention is compact in overall structure and convenient and flexible to use, has relatively low cost, and can be integrated into an image-spectrum associated detection device to implement automatic detection and tracking, which can be widely used in civil and military fields such as environmental monitoring and infrared guidance.

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Hubei, China

Xiaobing Dai