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Nanjing Nongda Cotton Grade Visual Recognition Technology Breakthrough

2011/10/24 18:37:00 54

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Visual Recognition Technology Of Cotton Grade In Nanjing Nongda University

please

Robot

Help to pick up cotton, this is not

Science fiction film

Camera lens.

In October 13th, the team led by Professor Wang Ling and Professor Ji Changying of Nanjing Agricultural University successfully cracked the key technology of picking robots for visual identification of cotton grades. The maturity and grade identification of cotton seeds in the field can be quickly and accurately judged according to the classification standards of seed cotton (seed cotton size, whiteness, yellowness and impurity content).

Grade,

It is expected that cotton will be picked and purchased from the source to solve the problem of cotton in China.

Pick

Quality problems.

For a long time, cotton picking and purchasing were mainly organoleptic test and instrumental testing was supplementary, and the quality of cotton picking needs to be improved.

Since 2005, the Wang Ling team has begun to study the recognition and classification of cotton seed in the field based on image feature selection.

According to the introduction, the researchers first used the CCD digital camera to collect the front image of the three stage cotton seed cotton "Su Mian 12" at the early stage, the middle stage and the late stage, and the front image of 350 grade cotton seeds. Then, through the technical treatment, the seed cotton image was segmented from the complex background, and the 14 texture characteristics reflecting the seed cotton whiteness, yellow and impurity content and the 16 shape features reflecting the size and structure of the cotton petal were used to classify and classify the seed cotton, and the recognition rates reached 85.3% and 88.4%, respectively, for the cotton seed 1~7.

Associate professor Wang Ling said that the cotton picking robot equipped with visual identification technology can simulate artificial real-time picking cotton seed and grading, which can adapt to the variety of cotton varieties, reduce production costs and improve cotton grade conformity rate, so that the collection of high, medium and low grade cotton will become more reasonable.

The breakthrough of this technology will also change the cotton quality test in our country from post harvest detection to pre harvest detection. Through picking robot, we can know before that the quality of cotton in which field is good and the quality of cotton in the field is poor, so as to avoid duplication or meaningless labor and realize the refinement of cotton picking.

It is learnt that at present, China has not yet fully adapted to the national conditions of the cotton grading equipment. For this reason, with the cotton picking robot vision system in seed cotton maturity and grade characterization research in depth, will also be conducive to the national conditions of cotton.

Grading instrument

Early appearance.