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Handheld blade nondestructive measurement method and device based on visual measurement

A technology of visual measurement and measurement device, applied in the field of visual measurement, can solve the problems of low precision and time-consuming measurement, and achieve the effects of low cost investment, simple operation and accurate blade area

Inactive Publication Date: 2021-03-19
宁夏农林科学院农业经济与信息技术研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are traditional manual measurement methods for measuring leaf area, such as grid method, weighing method, coefficient method, regression equation method, etc. Although the method is simple, the measurement is time-consuming and has low accuracy

Method used

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  • Handheld blade nondestructive measurement method and device based on visual measurement
  • Handheld blade nondestructive measurement method and device based on visual measurement
  • Handheld blade nondestructive measurement method and device based on visual measurement

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] refer to Figure 1-Figure 4 , a hand-held blade non-destructive measurement device based on visual measurement, including a support rod 1, an adjustable stabilizing mechanism 2 and an adjustable shooting mechanism 3, the bottom of the support rod 1 is fixed with a support boss 4, and the support rod 1 is covered with a handle 5 and the adjustable stabilizing mechanism 2, and the adjustable stabilizing mechanism 2 is located on the handle 5, the adjustable shooting mechanism 3 is fitted on the support rod 1, and the adjustable shooting mechanism 3 is located on the adjustable stabilizing mechanism 2 Above, the upper part of the support rod 1 is fixedly equipped with a limit sleeve 6, and the adjustable stabilizing mechanism 2 and the adjustable shooting mechanism 3 can be disassembled, and can be easily carried when carrying out outdoor measurements.

[0025] The adjustable stabilizing mechanism 2 includes a stabilizing arm 20, a first adjusting screw 21, a connecting pi...

Embodiment 2

[0038] The difference with Embodiment 1 is that the hand-held blade non-destructive measurement method based on visual measurement mainly includes the following steps:

[0039] S1: Leaf image acquisition, the leaves to be tested growing on the branches are placed on the glass plate 24 in the middle of the sampling plate 23, and a white square cardboard with a side length of 3 cm is placed next to the leaves to be tested as a reference object, Take pictures by taking pictures with device 39;

[0040] S2: image preprocessing, the image obtained in S1 is preprocessed by the processing system carried by the camera device 39, and the shadow area is removed;

[0041] S3: Image processing, adjusting the pre-processed image format into a grayscale image, and sequentially performing image enhancement and leaf edge detection on the grayscale image;

[0042] S4: Image marking, transfer the picture obtained in S3 to the computer, and obtain the pixel value of the blade to be measured and...

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Abstract

The invention provides a handheld blade nondestructive measurement method and device based on visual measurement. The device comprises a supporting rod, an adjustable stabilizing mechanism and an adjustable photographing mechanism, a supporting boss is fixed at the bottom of the supporting rod, the supporting rod is sleeved with a handheld handle and the adjustable stabilizing mechanism, and the adjustable stabilizing mechanism is located on the handheld handle; the adjustable photographing mechanism is assembled on the supporting rod and located on the adjustable stabilizing mechanism, a limiting sleeve is fixedly installed on the upper portion of the supporting rod, the height and the rotating angle of the adjustable stabilizing mechanism can be adjusted according to the actual operationenvironment, and the angle and the height of the adjustable photographing mechanism can be adjusted along with the adjustable stabilizing mechanism. The measurement device can be used for outdoor measurement and is simple in operability. Because the photosynthesis intensity is determined by the size of the plant leaf area, the leaf area obtained by using the nondestructive measurement method of the device is more accurate, and the error is lower than that of a traditional measurement method.

Description

Technical field: [0001] The invention relates to the field of visual measurement, in particular to a handheld blade non-destructive measurement method and device based on visual measurement. Background technique: [0002] Synthesis usually refers to the process in which green plants (including photosynthetic bacteria) use their own photosynthetic pigments to absorb light energy, and through the catalysis of enzymes, synthesize carbon dioxide and water into organic matter and release oxygen. Photosynthesis is the largest organic compound synthesis in the biological world process. The size of the leaf area of ​​a plant determines the intensity of its photosynthesis, and also directly affects the level of plant productivity. Therefore, the method of accurately and quickly measuring the leaf area is of great significance for agricultural production practice. There are traditional manual measurement methods for measuring leaf area, such as grid method, weighing method, coefficie...

Claims

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Application Information

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IPC IPC(8): G01B11/28G06T5/00G06T7/00G06T7/13F16M11/04F16M11/10F16M11/22
CPCG01B11/28G06T7/0002G06T7/13F16M11/04F16M11/10F16M11/22G06T2207/20024G06T2207/30188G06T5/90
Inventor 李锋石志刚李永梅张建华白鹭
Owner 宁夏农林科学院农业经济与信息技术研究所
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