Method and system for measuring length-width ratio of tobacco leaves
By identifying and processing the top and bottom pictures of tobacco leaves and calculating the unfolded contour lines of tobacco leaves, the problem of inaccurate measurement of the aspect ratio of folded tobacco leaves in the prior art is solved, and accurate and automated measurement results are achieved.
CN114963999BActive Publication Date: 2025-03-28HENAN TUSVISION INFORMATION TECH CO LTD
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Patent Information
- Application Number
- CN202210504394.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-05-10
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2042-05-10
AI Technical Summary
Technical Problem
The prior art is difficult to accurately identify and measure the tobacco leaf aspect ratio in folded states, resulting in low measurement accuracy and relying on manual estimation.
Method used
By collecting the top and bottom pictures of the tobacco leaves, identifying the folded area, calculating the symmetry points of the first contour line, forming the expanded second contour line, and then calculating the length and width of the tobacco leaves, thereby calculating the aspect ratio.
Benefits of technology
Accurate aspect ratio measurement of partially folded tobacco leaves is achieved, improving the accuracy and automation of measurement, and providing support for tobacco leaves grading.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention provides a method and system for measuring the aspect ratio of tobacco leaves, including: step S1, collecting a tobacco leaf picture under a light source; step S2, identifying the tobacco leaf picture to obtain the folding area of the tobacco leaf, and the boundary of each folding area includes a folding line and a first contour line; step S3, calculating the symmetric point of the first contour line relative to the folding line along a folding direction to form a second contour line after the tobacco leaf is unfolded; step S4, obtaining tobacco leaf width information according to the distance in the width direction of the tobacco leaf after unfolding, and obtaining tobacco leaf length information according to the distance between the tip and the base of the tobacco leaf; step S5, calculating the aspect ratio of the tobacco leaf according to the tobacco leaf length information and the tobacco leaf width information. Beneficial effect: The present invention is applicable to tobacco leaves that are partially folded and have no more than 2 layers of folding layers after preliminary processing, and can accurately measure the aspect ratio of tobacco leaves, providing strong support for automated tobacco leaf grading.
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