故意旋转大形变下的耳纹图谱模型分析  

Analysis of Ear Grain Identification Model Based on Deliberately Rotating

作　　者：谢长菊 梁筱宇 

机构地区：[1]高明广播电视大学,广东佛山528500

出　　处：《科技通报》2014年第12期94-96,共3页Bulletin of Science and Technology

摘　　要：耳纹识别,逐渐成为模式识别领域的一个新的研究方向。耳纹与指纹一样,具备唯一性,可作为生物识别特征。耳朵多是在和硬物挤压过程中形成耳纹信息,挤压过程对耳纹也造成了较大破坏,形成了旋转性的大形变。传统意义上的生物识别方法虽然能识别出特征,但是对应过程会产生大量的干扰,造成假识别,漏识别的问题。提出一种根据挤压形变的扭曲可变性样本,利用该样本,对耳纹图谱挤压后留下的大形变特征进行建模。利用粘稠液体模型描述这种挤压带来的形变,对耳纹关键部位特征进行图谱特征定位的计算,最大化计算耳纹产生的类内形变程度。仿真实验表明,该方法避免了由于耳朵挤压时形变过于剧烈造成的耳纹残缺的弊端,提高了耳纹验证的准确率。Ear grain identification, gradually become a new research direction in the field of pattern recognition. Ear grainlike fingerprints, have uniqueness, can be used as a biometric characteristic. But the ear is in the process of extrusion andhard formation more ear grain information, but the extrusion process is caused greater destruction on ear grain, formed therotation of large deformation. In the traditional sense of the biological identification method can identify the characteristics,but the corresponding process will produce a lot of interference, causing false identification, leak identification problem.For this, put forward a kind of according to the distortion of the extrusion deformation variability template, using the tem-plate, leave after the ear grain profiles extrusion deformation feature modeling. Viscous liquid model is used to describe thisextrusion deformation, characteristics of ear grain characteristic key positions are map positioning calculation, maximizecomputing ear lines within the class of degree of deformation. Simulation experiments show that this method avoids thecaused by ear during extrusion deformation too violent ear grain to the disadvantages of disability, improve the ear grain toverify accuracy.

关 键 词：耳纹识别 关联程度 挤压形变 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]