Transmission spectrum non-destructive quantitative evaluation method of apple watercore

A transmission spectrum and quantitative evaluation technology, applied in the field of nondestructive quantitative evaluation of apple water heart disease, can solve the problems of low recognition rate of nondestructive testing methods, harm of apple water heart disease, poor early warning ability, etc., so as to improve the accuracy of evaluation and improve The level of refinement and the effect of improved calculation accuracy

Active Publication Date: 2018-12-28
JIANGSU UNIV
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  • Abstract
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Problems solved by technology

[0004] Apple water core disease is a serious hazard and causes huge economic losses. The non-destructive testing met

Method used

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  • Transmission spectrum non-destructive quantitative evaluation method of apple watercore
  • Transmission spectrum non-destructive quantitative evaluation method of apple watercore
  • Transmission spectrum non-destructive quantitative evaluation method of apple watercore

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Embodiment 1

[0040] The present invention proposes a non-destructive quantitative evaluation method of transmission spectrum of apple water core disease, such as figure 1 As shown, the method is implemented through the following steps:

[0041] S1. Batch collection of apple samples with different degrees of water core disease;

[0042] S2. The calyx of the fruiting stem of the apple is placed horizontally, and the near-infrared transmission spectrum of the apple sample is collected at an interval of 120° around the equator of the apple, and the transmission spectrum of each apple is collected three times;

[0043] S3. Cut around the equator of the apple, use the camera to collect the color image of the apple section, remove the background from the image mask, calculate the area of ​​the entire apple section and the water core area with the encirclement method and image segmentation algorithm, and calculate the water content The area ratio between the heart disease area and the entire sect...

Embodiment 2

[0066] In this embodiment, taking Fuji apple as an example, the non-destructive quantitative evaluation method of transmission spectrum for apple water core disease is adopted to obtain near-infrared spectral data reflecting the internal information of Fuji apple in batches, and a quantitative evaluation model for water core disease of Fuji apple is established. Rapid non-destructive evaluation of water cores:

[0067] (1) Select representative Fuji apple samples in batches, use the near-infrared transmission spectrum acquisition system, the wavelength range is set to 590-1250nm, the integration time is 80ms, the average number of times is 3 times, the smoothness is 5, and the near-infrared transmission spectrum data of apple water core are collected , the near-infrared transmission spectra of apples with different degrees of water core are as follows image 3 shown.

[0068] Divide all samples into a calibration set and a verification set at a ratio of about 1:1. For example...

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Abstract

The invention discloses a transmission spectrum non-destructive quantitative evaluation method of apple watercore, and belongs to the technical field of rapid evaluation of food quality. The transmission spectrum non-destructive quantitative evaluation method disclosed by the invention comprises the following steps: non-destructively obtaining entire optical information in an apple by using an near-infrared transmission spectrum collection system, collecting an image of a equatorial profile of the apple by using a camera, dividing the image by using an encirclement and suppression algorithm, calculating a watercore area and a sectional area of the apple, using the ratio of the area of a watercore section on a cross section to the area of the entire section as a quantitative prediction index, establishing a transmission spectrum non-destructive quantitative evaluation model of the apple watercore by using a multielement correction method after preprocessing an obtained near-infrared transmission spectrum, so as to achieve the non-destructive quantitative prediction of the apple watercore. According to the transmission spectrum non-destructive quantitative evaluation method disclosedby the invention, the degree of the apple watercore is quantitatively predicted by using the transmission spectrum technology, thereby avoiding the disadvantages of destructive sampling of a sectionvisualization method, and solving the technical problems of low recognition rate and blurred boundary of the watercore.

Description

technical field [0001] The invention belongs to the technical field of fast and nondestructive evaluation of food quality, and in particular relates to a method for nondestructive quantitative evaluation of apple water core disease by transmission spectrum. Background technique [0002] Apple water core disease occurs in the main apple producing areas in my country. Apple varieties such as Red Fuji, Marshal, and Qinguan are severely affected. Most of the disease occurs in the core and vascular bundles. It cannot be identified from the outside. The huge economic loss of the operator will directly affect the brand image and consumer confidence for consumers. [0003] The traditional detection method of apple water core disease is to randomly select samples, and then slice them for visual judgment. This destructive sampling detection method is extremely wasteful, and it is not suitable for growers, processors and operators, and it is useless for product grading and evaluation. ...

Claims

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Application Information

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IPC IPC(8): G01N21/359G01N21/3563G01N21/31
CPCG01N21/31G01N21/3563G01N21/359G01N2021/3196
Inventor 郭志明郑雪丽邹小波陈全胜赵杰文欧阳琴尹丽梅李志华
Owner JIANGSU UNIV
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