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Method for detecting rice granule type

A rice and grain type technology, which is applied in the direction of testing food, measuring devices, material inspection products, etc., can solve problems such as large amount of calculation, and achieve the effect of high degree of automation, fast operation and high accuracy

Inactive Publication Date: 2008-10-01
CHINA AGRI UNIV
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Problems solved by technology

Another method is the fitting ellipse method, assuming that the outline of the rice is an ellipse, and calculating the major and minor axes of the fitted ellipse by ellipse fitting the outline of the rice grains, and using the major and minor axes as the length and width of the rice to calculate the grain size of the rice grains. type, because the contour of rice is not a real ellipse, and it also requires a large amount of calculation when fitting the contour

Method used

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  • Method for detecting rice granule type
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Embodiment Construction

[0030] The present invention will be further described below in conjunction with accompanying drawing:

[0031] figure 1 It is the connection diagram of the image acquisition and processing device of the present invention,

[0032] 1. Use the counting board and sampling board to take 10-1000 grains of rice samples from the batch of rice samples to be tested, place the sampler on the scanner 1, collect and obtain the original image, and store it as a 24-bit bmp format file. The brightness and contrast of scanner 1 are set between -15 and 25;

[0033] 2. Read the original image information, store the chromaticity information of each pixel in each grain of rice, and the original chromaticity information is RGB color information;

[0034] 3. Utilize the iterative method to segment the background and rice grains on the computer 2, set the background as full black RGB (0,0,0),

[0035] The specific steps of the iterative method are:

[0036] (1) Find the maximum and minimum gray...

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Abstract

The invention discloses a detection method of large grain of rice, comprising placing a rice sample in the image acquisition system for collecting original image information; reading the original image information and detaching the background from the rice sample; identifying whole grain rice and crushed rice; randomly selecting for a required amount in the whole grain rice according to rice varieties of set parameters and the whole grain rice amount required for detection, and searching point by point. The invention is used for the large grain of rice detection process of on-the-spot rice purchasing and market deal, achieving a rapid detection.

Description

technical field [0001] The invention belongs to the technical field of computer image processing, and in particular relates to a method for detecting the shape of rice grains. Background technique [0002] Rice grain type is one of the important characteristics of rice varieties, which is usually described by information such as length, width, and aspect ratio. Rice grain type has an important impact on other main quality indicators (such as gel consistency, whole grain rice rate, amylose content, etc.), and is one of the main basis for the classification and pricing of commercial rice. [0003] At present, the detection methods of rice grain shape in China mainly rely on manual measurement using measuring tools such as a ruler or a particle meter. According to the national standard GB / T 17891-1999 "High-quality Paddy", the rice grain type is measured by a ruler, that is, 10 intact and undamaged rice grains are randomly selected and placed flat on the measuring board, accor...

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Application Information

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IPC IPC(8): G01B11/00G01B11/02G06K9/00G06K9/46G01N33/10
Inventor 侯彩云祝晓芳孙建平尚艳芬常国华芮闯
Owner CHINA AGRI UNIV
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