Iris recognition method and device and storage medium
A technology of iris recognition and camera device, applied in character and pattern recognition, acquisition/recognition of eyes, instruments, etc., can solve problems such as limitations, interference, and inability to recognize iris images, and achieve the effect of high-precision positioning and recognition
Pending Publication Date: 2020-07-17
北京万里红科技有限公司
View PDF4 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] However, the current iris recognition technology is based on iris texture features, and these iris recognition devices collect iris information at close range, which has limitations compared to long-distance collection of iris information
And when the iris image is collected during the recognition process, there is a problem that the graphic texture is not clear and the iris image cannot be recognized, and the process of collecting the iris image is easily disturbed by the external environment
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment approach
[0112] The specific implementation is as follows: using the imaging model of the binocular wide-angle camera, combining the acquired internal and external parameters of the camera, through data conversion, the three-dimensional coordinates of the target face image are obtained, where the data conversion equation is as follows:
[0113]
[0114] Where f is the focal length, R is the rotation matrix, and t is the translation matrix, all of which can be obtained by camera calibration. Z p It is the object depth value, which can be obtained through the geometric model of the binocular camera. (u,v) is the pixel coordinates of the face image; (u 0 ,v 0 ) Is the coordinate at the intersection of the camera's optical axis and the image plane; (X p ,Y p ,Z p ) Is the world coordinates of the face of the target object, such as Figure 4 Shown.
[0115] After step S21, it may further include: performing error conversion on the world coordinates of the target face image.
[0116] According to ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to an iris recognition method and device and a storage medium, the iris recognition method is applied to electronic equipment, the electronic equipment comprises a rotatable camera device, and the method comprises the following steps: obtaining world coordinate information of a target face image shot by the camera device; calculating a rotation angle of the camera device according to the world coordinate information, and controlling the camera device to be positioned to a specified position according to the rotation angle, the specified position being a position corresponding to the target face image in an effective imaging range of the camera device; and acquiring iris information of the target face image, and performing iris recognition based on the iris information. According to the invention, through face detection and the positioning technology of the camera device, high-precision positioning identification is provided, iris information acquisition at different distances can be realized, and iris information can still be acquired and identified even in a long distance or even in the presence of external environment interference.
Description
Technical field [0001] The present disclosure relates to the fields of camera positioning, target detection, and iris recognition, and more particularly to an iris recognition method, device and storage medium. Background technique [0002] With the development of society, some important and even confidential places have high standards for the accuracy, stability and applicability of identification. Among related technologies, iris recognition technology has received widespread attention in the industry. Iris recognition technology is a kind of biological recognition technology, and the iris has all the detailed features and texture features, has the advantages of uniqueness, stability and non-contact, as well as high stability, high security, non-contact collection, It has physical advantages such as inherent isolation and protection. [0003] However, the current iris recognition technology is based on the iris texture feature to distinguish, and these iris recognition devices ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/18G06V40/19
Inventor 张小亮王秀贞戚纪纲杨占金其他发明人请求不公开姓名
Owner 北京万里红科技有限公司