Multichannel image matching method and device for multispectral camera

A matching method and multi-channel technology, applied in image enhancement, image analysis, image data processing, etc., can solve the problem of low matching accuracy, achieve the effect of improving matching accuracy, overcoming matching failure or low accuracy

Pending Publication Date: 2021-02-26
BEIJING RES CENT OF INTELLIGENT EQUIP FOR AGRI
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Problems solved by technology

[0004] However, in agricultural applications, the existing multispectral camera image matching

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  • Multichannel image matching method and device for multispectral camera
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  • Multichannel image matching method and device for multispectral camera

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[0031] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. 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.

[0032] Combine below Figure 1-Figure 3 The multi-channel image matching method and device of the multi-spectral camera of the present invention are described. figure 1 It is a schematic flow chart of the multi-channel image matching method of the multi-spectral camera provided by the present invention, such as figure 1 As shown, the present invention provides a multi-channel image matching...

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Abstract

The invention provides a multichannel image matching method and device for a multispectral camera, and the method comprises the steps of obtaining a preset group number of multichannel images, extracting the feature points of each image, carrying out the matching of the feature points of all multichannel images, and obtaining the homonymous points of a reference channel and other channels; takingthe image coordinates of the homonymy points of other channels and the lens focal length as coordinate parameters before conversion, taking the feature point image coordinates of the reference channeland the lens focal length as coordinate parameters after conversion, and determining coordinate conversion parameters in a coordinate conversion relationship according to camera imaging difference and sensor position offset; and converting other channels in all the shot multi-channel images into a reference channel according to the coordinate conversion parameters, and superposing the reference channel to obtain a shot matching image. According to the method, the two main imaging offset differences are considered, multi-channel image matching for the multi-spectral camera is achieved, and theproblem that matching fails or precision is low in the agricultural field can be solved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a multi-channel image matching method and device for a multi-spectral camera. Background technique [0002] Multispectral cameras are widely used in various aspects of agriculture, forestry, land resources, and environmental monitoring. At this stage, multispectral cameras that can be mounted on consumer drones, such as the DJI Phantom 4 multispectral camera, do not use spectroscopic technology due to technical and cost constraints. The acquisition of a channel image, thereby forming multispectral data. In the above imaging method, the sensors are not located at the same imaging center, so even at the same imaging time, there are still differences in the range of observations, resulting in that the imaging images cannot be completely overlapped. If the multi-channel images that cannot be completely overlapped are directly superimposed, the image will be shifted, so the...

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Application Information

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IPC IPC(8): G06T7/33G06T7/73
CPCG06T2207/10036G06T2207/30181G06T7/33G06T7/73
Inventor 陈立平夏浪张瑞瑞李龙龙徐旻
Owner BEIJING RES CENT OF INTELLIGENT EQUIP FOR AGRI
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