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Plant morph parameter vision measurer with automatic calibration function

A technology of automatic calibration and morphological parameters, applied in measurement devices, color measurement devices, instruments, etc., can solve the problem of lack of detailed description of measurement accuracy, and achieve the effect of ensuring consistency, environmental adaptability, and high measurement accuracy

Inactive Publication Date: 2008-10-29
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, it does not describe in detail how to ensure the measurement accuracy

Method used

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  • Plant morph parameter vision measurer with automatic calibration function
  • Plant morph parameter vision measurer with automatic calibration function

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Embodiment Construction

[0025] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0026] Such as figure 1 and figure 2 As shown, the measuring instrument of this embodiment is composed of a probe 5 and a measuring box 7. The probe 5 includes a camera 1, a lens 2, a light source 4, a range finder 3, buttons 9, a housing 8 and a cable 6, and the measuring box 7 includes There are DSP microprocessor, image card, measurement card, drive card, display, memory, keyboard, USB interface, charger and lithium battery. The lens 2 is installed at the front end of the camera 1; the light source 4 is composed of a plurality of light emitting diodes, which is ...

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Abstract

A plant morphometric parameter vision measuring instrument with the self-calibration function is provided. A high-resolution camera and a wide-angle lens are adopted to capture plant images in a non-contact manner and obtain measured parameter results by image processing, pattern recognition and numerical calculation. A ranging laser is adopted to detect the distance between the camera and the measured part and automatically correct and compensate, thus thoroughly overcoming the defect that the conventional measuring method has harsh requirements of the detection distance, and requires manual correction. A white LED light source is adopted to carry out active lighting, eliminate the impact of ambient light on the color parameter measurement and guarantee consistency and environmental suitability of the measurement results. A portable measuring instrument consisting of a high performance DSP chip and chargeable lithium batteries is adopted, and the measurement results are saved in the internal FLASH storage, thus meeting the operating requirements of farming investigations of overwhelming majority and ensuring higher measurement accuracy.

Description

technical field [0001] The invention relates to an instrument in the technical field of measurement, in particular to a visual measuring instrument for plant morphological parameters with an automatic calibration function. Background technique [0002] Accurate and automatic measurement of plant morphological parameters is the prerequisite for automatic control of plant growth, one of the main contents of crop field investigation, and the basis for germplasm resource investigation and identification, crop growth analysis and prediction. Among the many plant morphological parameters, the measurement of size parameters (such as plant height, stem thickness, leaf length, width and area, etc.) and color parameters (such as flower color, leaf color, seed color) is the most difficult, and the accuracy is difficult to guarantee. The traditional measurement methods of morphological parameters are: for the size parameters, the method of manually measuring with a ruler, and for the co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01J3/46G03B29/00
Inventor 曹越平赵辉刘伟文陶伟
Owner SHANGHAI JIAO TONG UNIV
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