Obtaining method of ground object spectrum and device thereof and detection method of hyperspectral image and device thereof
A technology of hyperspectral image and ground object spectrum is applied in the fields of hyperspectral image target detection method and device, and ground object spectrum acquisition method and device field, which can solve problems such as difficulty in acquiring ground object spectrum, and achieve improved accuracy, efficiency and efficiency. , easy to obtain effect
Active Publication Date: 2015-03-25
CENT FOR EARTH OBSERVATION & DIGITAL EARTH CHINESE ACADEMY OF SCI
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[0004] In view of this, the embodiment of the present invention provides a method and device for acquiring the spectrum of ground objects, and a method and device for detecting targets in hyperspectral images, with the purpose of solving the existing problem of difficulty in acquiring the spectrum of ground objects
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[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0048] An embodiment of the present invention provides a ground feature spectrum acquisition method, such as figure 1 shown, including:
[0049] S101: Receive a hyperspectral image and a preset target spectral library of the hyperspectral image;
[0050] The hyperspectral image described in this embodiment can be a remote sensing image, or other types of images. Generally, a hyperspectral image is a three-dimensional data, including M rows, N columns, and L l...
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The invention provides an obtaining method of ground object spectrum and a device of the ground object spectrum. By means of calculation of linear correlation between a pixel in the hyperspectral image and spectrum in a target spectrum library, the spectrum of the pixel which is in the smallest linear correlation with the spectrum in the target spectrum library is determined to be used as a background ground object spectrum, thus the background ground object spectrum can be determined just according to the hyperspectral image and the target spectrum library without the need of manual field measurement. Therefore, the ground object spectrum can be obtained with great convenience and obtaining efficiency of the ground object spectrum is improved. Moreover, on the basis of obtaining of the ground object spectrum, by means of target detection of the hyperspectral image, precision and efficiency of the detection can be improved.
Description
technical field [0001] The invention relates to the field of remote sensing, in particular to a method and device for acquiring ground object spectra, and a hyperspectral image target detection method and device. Background technique [0002] Hyperspectral image target detection is one of the important means to extract hyperspectral information. In the process of hyperspectral image detection, the object of interest to the researcher is called the target, and the object of interest to the researcher is called the background. In simple terms, object detection is to separate the object from the background. [0003] In the detection process, if the spectrum of the target object and the background object are known, high-precision detection results can be obtained. However, in practice, the spectrum of the background object needs to be measured and post-processed manually. Therefore, it is more difficult to obtain the spectrum of the background object. Contents of the inventio...
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IPC IPC(8): G01J3/28
Inventor 张兵高连如孙旭吴远峰郭乾东高建威
Owner CENT FOR EARTH OBSERVATION & DIGITAL EARTH CHINESE ACADEMY OF SCI