• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Resign and Quality for Biomedical Technologies; 20080121; San Jose,CA(US) >Simple models for color changes in a finger during a fingerprint input action
【24h】

Simple models for color changes in a finger during a fingerprint input action

机译：指纹输入操作期间手指颜色变化的简单模型

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Blood movement inside a finger causes color changes in a fingerprint image during a fingerprint input action. We consider models to relate this information to the stiffness of a collective blood vessel in a finger. In the simple resistor model, finger area is regarded as voltage and the color change was regarded as current. We define its resistance as the ratio of these two quantities according to Ohm's law. However, experiments show that this resistance value increases as the force applied to a finger increases. Second, we consider the variable resistor model to account for this force dependency. We assume that the driving force decreases the cross-section of the blood vessel and that stress and strain are related by Young's modulus. Experiments by six participants show reasonably good fittings for the extracted signals and the model's predictions. The correlation coefficient between the extracted parameter and the average blood pressures of the participants was 0.75.
机译：手指内部的血液运动会在指纹输入操作期间导致指纹图像的颜色变化。我们考虑将这些信息与手指集体血管的刚度相关的模型。在简单电阻器模型中，将手指区域视为电压，将颜色变化视为电流。根据欧姆定律，我们将其电阻定义为这两个量的比值。但是，实验表明，此阻力值随施加到手指上的力的增加而增加。其次，我们考虑可变电阻器模型来考虑这种力依赖性。我们假设驱动力减小了血管的横截面，并且应力和应变与杨氏模量有关。六名参与者进行的实验表明，提取的信号和模型的预测相当合适。所提取的参数与参与者的平均血压之间的相关系数为0.75。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号