Focusing method and device of iris camera

• Main Authors: JIA FUCHANG, YANG ZHANJIN, LI MAOLIN, ZHANG XIAOLIANG, WEI YANZHAO
• Format: Patent
• Language: Chinese; English
• Published: 22.08.2023
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

The invention discloses a focusing method and device of an iris camera, and relates to the technical field of computer image processing. The method comprises the following steps: acquiring a double-iris image acquired by an iris camera; inputting the double-iris image into a preset iris detection model to obtain an interpupillary distance and an iris diameter; correspondingly obtaining the focal length of the iris camera based on the focal length fitting value, so that the iris camera shoots double irises at the focal length; wherein the focal length fitting value is obtained by inputting the pupil distance and the iris diameter into a preset focal length regression model for fitting; the preset focal length regression model comprises a mapping relation between the focal length fitting value and the focal length. By implementing the technical scheme provided by the invention, the automatic focusing of the iris camera can be realized, so that the iris camera can clearly shoot the image of the iris of the human