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A flat leaf area nondestructive measuring system and method thereof

A technology of blade area and measurement method, which is applied to measurement devices, instruments, optical devices, etc., can solve the problems of large measurement errors of blades and single blades, complicated and time-consuming operations, and high prices, so as to meet measurement needs, guarantee costs, and reduce costs. The effect of cost control

Inactive Publication Date: 2007-04-25
INST OF AUTOMATION CHINESE ACAD OF SCI
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Problems solved by technology

Existing traditional leaf area measurement methods, including the method of measuring leaf area by grid plate, the method of estimating leaf area by using leaf weight, and the method of calculating leaf area by regression equation, respectively have complex and time-consuming operations, damaged leaves, and large measurement errors for individual leaves. Shortcomings
However, the imported leaf area meter is used to measure the leaf area, although the operation is simple and quick, and the result is accurate, but the price is expensive, and it is not suitable for widespread application.
[0003] An alternative is to use a scanner to scan the leaf and calculate the leaf area, but this method is only destructive

Method used

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  • A flat leaf area nondestructive measuring system and method thereof
  • A flat leaf area nondestructive measuring system and method thereof
  • A flat leaf area nondestructive measuring system and method thereof

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Embodiment Construction

[0027] Figure 1 is the calibration plate and the photos taken, in which the blade to be tested is attached to the calibration plate.

[0028] Fig. 2 The planar blade area non-destructive measurement system includes an image acquisition device, an image correction device, a blade image segmentation device, and a blade area calculation device. Wherein, the image acquisition unit, the image correction unit, the leaf image segmentation unit, and the leaf area calculation unit are sequentially connected to each other.

[0029] The specific operation process of the non-destructive measurement method of plane blade area in Fig. 3 is:

[0030] (1) Attach the blade to be measured to the calibration plate, flatten it, and use a digital camera to take an image of the calibration plate;

[0031] (2) The user creates an object coordinate file corresponding to the point with the same name in the image;

[0032] (3) Load image and corresponding point file with the same name;

[0033] (4) ...

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Abstract

The invention relates to the field of plane area measurement technology, in particular to the non-destructive measurement system and method of the plane blade area for a single image. The system comprises: image acquisition unit, image correction unit, blade image division unit, blade area calculation unit. The method includes: the flat blade image which is attached to the demarcating board can be gained from the image acquisition unit; the projective corresponding relationship between the image element and the object can be calculated based on the isonym point of the image and the demarcating board by the image correction unit, the orthographic correction of the image is also done; the image of the blade can be separated from the background by the blade image division unit; the area of the blade image which is after the orthographic correction can be computed based on the projective corresponding relationship by the blade area calculation unit.

Description

technical field [0001] The invention relates to the technical field of plane area measurement, in particular to a system and method for nondestructively measuring plane blade area by using a single image. Background technique [0002] Leaf area is one of the commonly used indicators in crop cultivation and breeding operations, and is also an important evaluation indicator for crop yield and quality. The measurement of leaf area has always been one of the hotspots in the field of agriculture. Existing traditional leaf area measurement methods, including the method of measuring leaf area by grid plate, the method of estimating leaf area by using leaf weight, and the method of calculating leaf area by regression equation, respectively have complex and time-consuming operations, damaged leaves, and large measurement errors for individual leaves. Shortcomings. However, the imported leaf area meter is used to measure the leaf area, although the operation is simple and quick, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/28G01B11/28
Inventor 滕军胡包钢
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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