CN102759527A - Method for detecting alkali digestion degree of rice - Google Patents
Method for detecting alkali digestion degree of rice Download PDFInfo
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- CN102759527A CN102759527A CN2011101083347A CN201110108334A CN102759527A CN 102759527 A CN102759527 A CN 102759527A CN 2011101083347 A CN2011101083347 A CN 2011101083347A CN 201110108334 A CN201110108334 A CN 201110108334A CN 102759527 A CN102759527 A CN 102759527A
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Abstract
The invention discloses a method for detecting the alkali digestion degree of rice. The method comprises the steps as follows: firstly, a background filter paper for rice grain images is manufactured and obtained; then, the alkali digestion degrees of rice grains are determined and a sample image is obtained; next, the areas of the rice grain images are obtained by utilizing an image processing method; and finally, the alkali digestion degree of the rice is obtained through the areas of the images. The detection method has the advantages that the alkali digestion degree of the rice can be objectively represented after a rice image is obtained.
Description
Technical field
The present invention relates to a kind of method that detects rice alkali degree of disappearing, it is a kind of detection method based on computer picture recognition; Belong to the computer image processing technology field.
Technical background
Alkali degree of disappearing is a kind of method of simple, rapid and precise indirect determination rice gelatinization point.Alkali degree of disappearing is mainly by the repellence decision of the grain of rice to alkali, and is also relevant with basicity, the density of rice tissue.The classification of alkali degree of disappearing is judged grain of rice spallation degree and sharpness generally with the artificial visually examine.The spallation degree mainly reflects characteristics such as the grain of rice expands, dissipation in aqueous slkali.Sharpness is mainly with the foundation that is changed to through the white situation of grain of rice chalk, flocculent substance after the aqueous slkali soaking.These methods judge that main subjective judgement with the people is main, are unfavorable for objectively responding rice alkali degree of disappearing situation.
Summary of the invention
For the objective quantitative that solves rice alkali degree of disappearing detects problem, the present invention proposes a kind of method of utilizing image processing techniques objective detection rice alkali degree of disappearing.
The method of detection alkali degree of disappearing of the present invention may further comprise the steps:
Grain of rice image background filter paper is obtained in step 1, making;
Step 2, grain of rice alkali degree of disappearing are measured, and are obtained sample image;
Step 3, utilize image processing method to obtain grain of rice image area;
Step 4, obtain rice alkali degree of disappearing by image area.
The method of aforesaid detection alkali degree of disappearing is made image background in alkali degree of the disappearing mensuration process in the described step 1, filter paper is cut the circular filter paper into diameter 55mm, and use black ink that it is dyed black.
The method of aforesaid detection alkali degree of disappearing, in the described step 2, it is that the 55mm double dish is measured alkali degree of disappearing that black filter paper is placed internal diameter.Use scanner to obtain initial grain of rice picture and potassium hydroxide immersion back grain of rice picture respectively, preserve picture.
The method of aforesaid detection alkali degree of disappearing uses image processing software respectively initial grain of rice picture and potassium hydroxide immersion back grain of rice picture to be carried out the image pre-service in the described step 3, the grain of rice picture after obtaining handling calculates grain of rice image area.
The method of aforesaid detection alkali degree of disappearing is soaked back grain of rice area divided by initial grain of rice image area with potassium hydroxide in the described step 4, reflects rice alkali degree of disappearing with this.
Method proposed by the invention; Through being that background is obtained initial grain of rice picture and potassium hydroxide and soaked back grain of rice picture with black; Cause the different principle of grain of rice image area after utilizing rice in aqueous slkali, to soak, measure its alkali degree of disappearing divided by the ratio of initial pictures area through grain of rice image area after calculating aqueous slkali soaking.This method is obtained grain of rice picture through scanner when sample detection, replace in the classic method method with the classification of people's subjective judgement, can objective evaluation alkali degree of disappearing difference, reduce subjective random; And can a plurality of samples of disposable detection.
Embodiment
Through the concrete embodiment that gets the inventive method is described below.
The step-by-step procedures of the said method of the embodiment of the invention is following:
At first, filter paper is cut the circular filter paper into diameter 55mm, and place black ink 12h.Then filter paper is taken out, under shady and cool environment, dry.Not having black with distilled water immersion filter paper several times to water occurs.Black filter paper is dried.
Then, it is the 55mm double dish that above-mentioned black filter paper is placed internal diameter, the rice that 7 machining precisioies are secondary equidistant by radial distribution in double dish, inject 10mL potassium hydroxide solution (long-grained nonglutinous rice 1.7g/100mL, polished rice 1.4g/100mL).Scanner resolution is a 300dpi scanning grain of rice RGB picture, preserves picture.Double dish is added a cover, and (25 ℃) leave standstill 23h under constant room temperature.Scanner obtains and soaks back grain of rice RGB picture, preserves picture.
Then; Use image processing software respectively grain of rice picture behind initial grain of rice picture and the potassium hydroxide immersion 23h to be carried out according to gray=0.2989 * R+0.5870 * G+0.1140 * B gradation conversion, with [3; 3] segmentation threshold that wave filter carries out medium filtering, use the Ostu adaptive threshold to confirm carries out binary conversion treatment, be that 2 circular configuration element carries out the morphology ON operation to bianry image with radius; Grain of rice two-value picture after obtaining handling, through bianry image calculate respectively initial grain of rice picture with soak behind the 23h 7 rice image areas of grain of rice picture with.
Next; With soaking its alkali degree of disappearing of ratio in judgement (1-7 level) that grain of rice area obtains divided by initial grain of rice image area behind the 23h, wherein 1 grade is 5.0 or more for 3.4-4.0,6 grades for 4.0-5.0,7 grades for 2.8-3.4,5 grades for 2.0-2.6,4 grades for 1.4-2.0,3 grades for 1.0-1.4,2 grades.
It should be noted last that: above embodiment is the unrestricted technical scheme of the present invention in order to explanation only; Although the present invention is specified with reference to the foregoing description; Those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention; And replace any modification or the part that do not break away from spirit and scope of the invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. method that detects rice alkali degree of disappearing may further comprise the steps:
Grain of rice image background filter paper is obtained in step 1, making;
Step 2, grain of rice alkali degree of disappearing are measured, and are obtained sample image;
Step 3, utilize image processing method to obtain grain of rice image area;
Step 4, obtain rice alkali degree of disappearing by image area.
2. the method for detection alkali degree of disappearing according to claim 1; It is characterized in that: make image background in alkali degree of the disappearing mensuration process in the described step 1; It is diameter 55mm circular filter paper (confirming according to double dish internal diameter and the used grain of inspection number) that filter paper is cut, and the use black ink is dyed black with it.
3. the method for detection alkali degree of disappearing according to claim 1 is characterized in that: in the described step 2 black filter paper being placed internal diameter is that diameter 55mm double dish is measured alkali degree of disappearing.Use scanner to obtain initial grain of rice picture and potassium hydroxide immersion back grain of rice picture respectively, preserve picture.
4. the method for detection alkali degree of disappearing according to claim 1; It is characterized in that: use image processing software respectively initial grain of rice picture and potassium hydroxide immersion back grain of rice picture to be carried out the image pre-service in the described step 3; Grain of rice picture after obtaining handling calculates grain of rice image area.
5. the method for detection alkali degree of disappearing according to claim 1 is characterized in that: described step 4, potassium hydroxide is soaked back grain of rice area divided by initial grain of rice image area, and characterize rice alkali degree of disappearing with this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101083347A CN102759527A (en) | 2011-04-28 | 2011-04-28 | Method for detecting alkali digestion degree of rice |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101083347A CN102759527A (en) | 2011-04-28 | 2011-04-28 | Method for detecting alkali digestion degree of rice |
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| Publication Number | Publication Date |
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| CN102759527A true CN102759527A (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101083347A Pending CN102759527A (en) | 2011-04-28 | 2011-04-28 | Method for detecting alkali digestion degree of rice |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289512A (en) * | 2020-02-28 | 2020-06-16 | 中国水稻研究所 | Rice grain alkali elimination value high-throughput determination method based on deep convolutional neural network |
-
2011
- 2011-04-28 CN CN2011101083347A patent/CN102759527A/en active Pending
Non-Patent Citations (4)
| Title |
|---|
| SARUN SUMRIDDETCHKAJORN ET AL.: "Identification of Thai Hom Mali Rice using a Refractometer", 《SENSING FOR AGRICULTURE AND FOOD QUALITY AND SAFETY》 * |
| 蒲一涛等: "碱消度法快速测定泰国香米纯度", 《深圳大学学报(理工版)》 * |
| 陈志行等: "大米品质分析中的碱消度法优化研究", 《粮食与饲料工业》 * |
| 马涛: "《粮油食品检验》", 31 March 2009, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289512A (en) * | 2020-02-28 | 2020-06-16 | 中国水稻研究所 | Rice grain alkali elimination value high-throughput determination method based on deep convolutional neural network |
| CN111289512B (en) * | 2020-02-28 | 2021-04-13 | 中国水稻研究所 | Rice grain alkali elimination value high-throughput determination method based on deep convolutional neural network |
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Application publication date: 20121031 |