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Hyperspectral image noise simulation method and device

A hyperspectral image and noise simulation technology, applied in the field of image processing, can solve the problem that the signal-to-noise ratio of the hyperspectral image cannot reach the signal-to-noise ratio, and the noise of the hyperspectral basic image is not considered.

Inactive Publication Date: 2014-09-03
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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Problems solved by technology

[0004] However, the current hyperspectral image noise simulation method does not consider the noise of the hyperspectral base image itself, so that the signal-to-noise ratio of the hyperspectral image obtained by superimposing the simulated noise on the hyperspectral base image cannot reach the specified signal-to-noise ratio

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  • Hyperspectral image noise simulation method and device

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[0069] 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 creative efforts fall within the protection scope of the present invention.

[0070] Please see figure 1 , figure 1 An implementation flowchart of the hyperspectral image noise simulation method provided in the embodiment of the present application may include:

[0071] Step S11: perform signal estimation on the data of the i-th band of the hyperspectral basic image, and obtain the signal estimation data of the i-th band;

[0072] The regression parameters can be obtained by the multiple linear regression method, and then the signal estima...

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Abstract

The embodiment of the invention discloses a hyperspectral image noise simulation method and device. With the consideration of noise data carried by a hyperspectral basic image, signal estimation is conducted on each wave band of the hyperspectral image, the noise data are obtained by subtracting signal estimation data from original data of hyperspectral data, and a difference value obtained by subtracting a noise estimation of the noise data of the ith wave band from a target noise estimation of the ith wave band serves as a noise estimation of to-be-simulated noise data of the ith waveband. Thus, the signal to noise ratio of a hyperspectral image obtained by overlaying the hyperspectral basic image with simulated noise reaches a designated signal to noise ratio.

Description

technical field [0001] The present invention relates to the technical field of image processing, and more specifically, to a hyperspectral image noise simulation method and device. Background technique [0002] Noise is an inherent phenomenon of hyperspectral images (that is, remote sensing images). The signal-to-noise ratio of hyperspectral images is an important indicator of hyperspectral image load parameters, and an important parameter that determines the quality of hyperspectral images and their application performance. Therefore, noise simulation is very important in hyperspectral image simulation. [0003] At present, hyperspectral image noise simulation is based on the hyperspectral basic image, and according to the specified signal-to-noise ratio, the additive noise simulation is performed. [0004] However, the current hyperspectral image noise simulation method does not consider the noise of the hyperspectral base image itself, so that the signal-to-noise ratio o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
Inventor 张文娟张兵高连如吴远峰孙旭
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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