烟草科技2026，Vol.59Issue(9)：51-62,12.DOI:10.16135/j.issn1002-0861.2025.0858
基于微焦点CT扫描技术的烟支内部烟丝分割及特征提取分析
Segmentation and feature extraction of cut tobacco inside cigarette rod based on micro-focus CT scanning technique
摘要
Abstract
To extract key characteristic parameters such as the particle size,morphology and distribution state of cut tobacco inside cigarette rods,a systematic method for cut tobacco particle distribution and an extraction method for particle size characteristics were established.A micro-focus CT technique was employed to scan cigarette samples and a recognition and segmentation model for cut tobacco particles was constructed.Furthermore,based on a spatial matching algorithm for cut tobacco particles among sequential cross-sections,the three-dimensional characteristic length of cut tobacco was obtained by correlating the same cut tobacco entity in adjacent cross-sections layer by layer.Cigarette samples with a diameter of 7.80 mm and a cut tobacco rod length of 65.00 mm were studied and the results showed that:1)The YOLOv8 model satisfactorily realized the recognition and segmentation of cut tobacco particles in cross-sections.2)The number of cut tobacco particles at the mouth end(6 mm from the filter)and the lighting end(6 mm from the rod end)was significantly higher than that in the middle rod.The number of cut tobacco particles in different sections fluctuated between 40 and 70.Cut tobacco particles were mainly distributed within 1-3 mm from the cigarette center,while the number was relatively low within 3-4 mm from the center,indicating a sparse distribution near the cigarette paper.3)The width of cut tobacco particles was concentrated in the range of 0.72-1.39 mm,with the coefficient of variation ranging from 25.77%to 31.11%.The thickness was concentrated within 0.09-0.18 mm,with the coefficient of variation ranging from 15.32%to 26.48%,showing good overall uniformity.4)Cut tobacco particles with three-dimensional length of 3.00-5.70 mm accounted for a large proportion,while those longer than 11.10 mm only accounted for 10%of the total.5)Taking cigarette sample 2#as an example,the measurement deviation between this method and the conventional cut tobacco length detection method was 3.0%,and the distribution trends of cut tobacco particle length obtained by the two methods were in good agreement,which verified the accuracy of the proposed three-dimensional length detection method for cut tobacco particles.This study provides technical support for the calculation of characteristic size of cut tobacco particles.关键词
CT扫描/烟支内部/烟丝分割/烟丝特征尺寸/YOLOv8模型Key words
CT scanning/Interior of cigarette rod/Cut tobacco segmentation/Cut tobacco feature size/YOLOv8 model分类
轻工纺织引用本文复制引用
刘涛,胡艺川,赵鑫,朱文魁,刘朝贤,王乐,赵传民,王姝,邓国栋..基于微焦点CT扫描技术的烟支内部烟丝分割及特征提取分析[J].烟草科技,2026,59(9):51-62,12.基金项目
中国烟草总公司重大科技项目"新一代智能中速卷接机组的研制"[110202401039(YJ-2)] （YJ-2）
中国烟草总公司重大科技项目"基于三维重构与计算流体力学的卷烟滤嘴数字化设计研究"[110202501015(SZ-07)]. （SZ-07）
