Distance measurement system and distance measurement method applied to canopy reflectance spectra measurement

A technology of canopy reflection spectrum and ranging method, which is applied in the application field of the combination of non-destructive testing technology and image processing technology, to achieve the effect of simplifying the actual operation process and defining more scientifically

Active Publication Date: 2015-04-01
NANJING AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0007] The purpose of the present invention is to propose a ranging system and its method applied to canopy reflectance spectrum measurement for the problem that the currently commonly used distance measuring method is difficult to apply in the real-time measurement of crop canopy

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  • Distance measurement system and distance measurement method applied to canopy reflectance spectra measurement

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Such as figure 1 Shown, a kind of ranging system and method thereof that is applied to canopy reflectance spectrum measurement adopts binocular vision and embedded processor to construct canopy ranging system, ranging sensor among the present invention is binocular vision camera 1, 2 A camera with a small focal length and a large-sized sensitive element is used, and the focal length is 6 mm. The binocular vision camera is installed on the mounting bracket 4, and its main optical axes are parallel to each other with a distance of 8 cm. The purpose is to obtain a larger field of view and High imaging quality, the field of view covers the detection range of the canopy inverse spectroscopy measurement device.

[0027] The embedded processor 3 adopts an ARM system with an operating system, and the ARM system provides a general-purpose serial port to ...

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Abstract

The invention discloses a distance measurement system and a distance measurement method applied to canopy reflectance spectra measurement; the distance measurement system comprises two distance measurement sensors, an embedded processor and a mounting bracket, the embedded processor is placed in the middle of the mounting bracket, the two distance measurement sensors are respectively arranged on both ends of the mounting bracket, the two distance measurement sensors are used for image information acquisition of crop canopy and are connected with a signal input end of the embedded processor, the embedded processor outputs height information between the distance measurement system and the canopy to a canopy reflectance spectra measurement device connected with the embedded processor, the canopy reflectance spectra measurement device is placed in the middle of the mounting bracket, and a distance measurement system sensor detection terminal facing the canopy and a canopy reflectance spectra measurement device detection terminal facing the canopy are in the same plane. The canopy distance measurement system is constructed by adopting a binocular vision technology and the embedded processor, the processing of binocular vision data can be realized by use of an embedded system, and the measurement of the canopy distance can be realized by using binocular vision depth information.

Description

technical field [0001] The invention relates to the application field of the combination of non-destructive testing technology and image processing technology, in particular to a ranging system using binocular vision technology, in particular to a ranging system and method applied to canopy reflection spectrum measurement. Background technique [0002] At present, using crop canopy diffuse reflectance spectrum to obtain crop growth information is an important research direction in the field of agricultural information. Scholars at home and abroad have done in-depth and extensive research on the mechanism relationship between diffuse reflectance spectrum and related crop growth information. Nitrogen nutrition is an important factor to be considered in crop production. Reasonable and timely nitrogen fertilizer management is an effective measure to achieve high yield and high quality of crops. Therefore, timely understanding of crop nutritional status and reasonable fertilizatio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C3/00
Inventor 丁永前曹卫星朱艳谭星祥毕伟平张弛徐志刚
Owner NANJING AGRICULTURAL UNIVERSITY
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