Crop coverage automatic online observation method and device
A technology of coverage and crops, applied in the directions of measuring devices, surveying and navigation, photogrammetry/video metrology, etc., can solve the problems of time-consuming and laborious, poor timeliness and comparability of data, observation errors, etc., and achieve accurate crop coverage Effect
Active Publication Date: 2014-04-30
CMA METEOROLOGICAL OBSERVATION CENT
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Problems solved by technology
[0003] At present, manual methods are usually used to measure crop coverage. This method is time-consuming and laborious. It is difficult to conduct real-time continuous observation of crops, and it causes large errors in observation, and the timeliness and comparability of data are poor.
[0004] There are also devices that replace manual observations, but they cannot be fully automated, and cannot automatically provide crop coverage in real time and online
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[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0036] The present invention regularly collects crop image data and weather data affecting crop image acquisition through the automatic observation device and farmland microclimate collector fixedly installed in the field, and transmits them to the data processing unit of the business terminal through remote transmission, and the data processing unit follows the preset program A series of processing and quality control to form the coverage of crops in real time.
[0037] see figure 1 As shown, the automatic observation device includes an image data acquisition unit, a communication transmission unit and a data processing center; the image data acquisition unit includes a farmland microclimate collector, an image collector, and a video monitor; the farmland microcl...
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The invention discloses a crop coverage automatic online observation method and device. The method comprises the following steps of: collecting a crop forward-looking image by using an image collector; collecting weather data affecting crop image acquisition by using an agricultural microclimate collector; transmitting the weather data to a data processing center; collecting a crop calibrated image by using the image collector; transmitting the crop calibrated image to the data processing center; carrying out real-time downward visual area conversion, illumination removing influence and de-noising processing on the forward-looking image by using the data processing center according to the calibrated image; determining an image coverage sample area; carrying out quality control according to the weather data; and then giving crop coverage. According to the invention, through collecting the crop image and the weather data affecting the image acquisition in real time, the image coverage sample area is determined through image conversion, noise elimination and illumination influence in the data processing center; and the coverage of the crop is automatically given online after the image quality is controlled by the weather data; therefore, the online obtained crop coverage is more accurate.
Description
technical field [0001] The invention relates to an automatic on-line observation method and device for crop coverage, which is suitable for on-line observation of wheat and corn crop coverage. Background technique [0002] Crop coverage is the result of the comprehensive effect of the environment on crop growth. It is an important parameter for crop growth. Through the change of coverage, we can know the progress of crop development and the change of growth in real time. It is of great significance to carry out crop yield estimation and disaster prevention to ensure food security; at the same time, crop coverage can be one of the verification data for crop remote sensing growth monitoring. [0003] At present, manual methods are usually used to measure crop coverage. This method is time-consuming and laborious. It is difficult to conduct real-time continuous observation of crops, and it causes large errors in observation, and the timeliness and comparability of data are poor...
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IPC IPC(8): G01C11/00
Inventor 张雪芬曹治国薛红喜余正泓李翠娜白晓东孙涵
Owner CMA METEOROLOGICAL OBSERVATION CENT