首页>
外国专利>
Biometric image processing device, biometric image processing method and computer-readable non-transitory medium
Biometric image processing device, biometric image processing method and computer-readable non-transitory medium
展开▼
机译:生物特征图像处理设备,生物特征图像处理方法和计算机可读非暂时性介质
展开▼
页面导航
摘要
著录项
相似文献
摘要
A biometric image processing device includes: a memory; and a processor coupled to the memory and the processor configured to execute a process, the process comprising: capturing a biometric image of an object by a camera; obtaining a histogram of brightness values from the biometric image; correcting the biometric image by expanding a dynamic range of a partial histogram of the histogram of which an appearance frequency is equal to or more than a threshold; and calculating a distance between the camera and the object on a basis of a high frequency component of the biometric image corrected in the correcting.
展开▼