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Method for obtaining spectrum-integrated time-varying target optical spectrum information and device thereof

A technology of spectral information and acquisition method, applied in the field of spectral data acquisition of time-varying objects, can solve the problems of spectral data acquisition not suitable for time-varying objects, long integration time, slow response speed, etc., and achieves reduction in device cost and fast response speed , the effect of saving collection time

Active Publication Date: 2010-05-05
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] For spectral data collection of time-varying objects, existing multispectral / hyperspectral imaging sensors have two disadvantages: (1) expensive; Its integration time is long and the response speed is slow, so it is not suitable for spectral data acquisition of time-varying objects

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  • Method for obtaining spectrum-integrated time-varying target optical spectrum information and device thereof
  • Method for obtaining spectrum-integrated time-varying target optical spectrum information and device thereof
  • Method for obtaining spectrum-integrated time-varying target optical spectrum information and device thereof

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Embodiment Construction

[0037] Below in conjunction with example and accompanying drawing, the present invention will be further described.

[0038] There are two working methods: manual working method and automatic working method. In the initial stage, the area of ​​interest is determined manually, and the subsequent stage is transferred to an automatic working mode; the duration of the initial stage can be set according to different data collection tasks, and is usually set as the period for the first five data collections.

[0039] Spectral information acquisition method of the present invention is specifically:

[0040] (1) A wide-spectrum imaging sensor is used to image the scene containing the region of interest. Such as image 3 as shown, image 3 (a), (b), and (c) are long-wave infrared broad-spectrum (8-12 μm) images at three different times, and the time-varying object is a ship. image 3 The times of (a), (b), and (c) are 7:00, 14:00, and 22:00 respectively. There are two time-varying ob...

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Abstract

The invention discloses a method for obtaining spectrum-integrated time-varying target optical spectrum information and a device thereof. The method specifically comprises the steps of: obtaining a current frame image of a scene; extracting candidate interest regions which comprises time-varying targets therein; respectively leading the each candidate interest region to be associated with each interest region obtained from the last frame; confirming the candidate interest regions which are successfully associated to be interest regions; assigning the identification of the interest regions to the identification of the last frame interest region which is successfully associated therewith; and obtaining optical spectrum data of the each interest region of the current image. The invention also designs a device for realizing the method, which comprises a main control unit, an imaging sensor, an optical spectrum sensor, an infrared spectroscopy lens, a tracking reflecting mirror and a tracking and scanning rotary table. The invention provides a data acquisition method for combining a wide imaging optical spectrum with a wide non-imaging optical spectrum; and compared with a normal method for acquiring optical spectrum data of the all regions of the whole scene, has fast reaction speed and low cost, is suitable for the intellectualized acquisition of the time-varying target optical spectrum data, and improves the cost-effectiveness ratio for acquiring the optical spectrum date.

Description

technical field [0001] The invention belongs to the field of remote sensing, monitoring and spectral data collection, and in particular relates to a method and device for collecting spectral data of time-varying objects. Background technique [0002] Spectral data acquisition technology mainly studies the methods and techniques of acquiring spectral data of scenes or objects of interest. This technology is widely used in the field of remote sensing, and provides a data basis for studying the spectral characteristics of various target backgrounds, and then classifying, monitoring, and target detection and recognition of scenes. [0003] Usually, multispectral / hyperspectral imaging sensors are used for the collection of scene spectral data. The multispectral / hyperspectral imaging sensor has a certain field of view, angular resolution, and spectral resolution. The process of data acquisition by the multispectral / hyperspectral imaging sensor is to collect the scene area corresp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/48G01S7/481G06T7/00
Inventor 张天序张新宇易新建孙协昌方正郑璐璐李成曹治国桑农徐利成郑珍珠
Owner HUAZHONG UNIV OF SCI & TECH
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