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A method, device and mobile terminal for iris image perspective correction

An iris image, perspective correction technology, applied in character and pattern recognition, instruments, acquisition/recognition of eyes, etc., can solve the problems of inapplicable real-time requirements, large amount of calculation, and obtaining fixed positions, so as to facilitate identification processing, improve Accuracy, fast correction of the effect of transformations

Active Publication Date: 2019-06-04
徐鹤菲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, this method requires that enough and stable feature points can be easily detected in the image, and it is also sensitive to external lighting conditions and interference.
For different facial regions, it is difficult to reliably obtain feature points at fixed positions, and the amount of calculation is large, which is not suitable for the real-time requirements of iris applications on mobile terminals

Method used

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  • A method, device and mobile terminal for iris image perspective correction
  • A method, device and mobile terminal for iris image perspective correction
  • A method, device and mobile terminal for iris image perspective correction

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Embodiment Construction

[0040] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0041] figure 1 A schematic diagram is constructed for a mobile terminal 100 according to an embodiment of the present invention. Such as figure 1 As mentioned above, the mobile terminal 100 includes: a memory interface 102 , one or more data processors, image processors and / or a central processing unit 104 , and a peripheral interface 106 . Memory interface 102, one or more processors 104, and / or peripheral interface 106 may be ...

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Abstract

The present invention discloses a method of perspective correction of iris image, suitable for execution in the mobile terminal, which includes: obtaining the original iris image of the user to be recognized;The location information of the human eyebrow membrane and its original iris image is calculated to obtain the viewing direction and horizontal angle θ of the human eye when the original iris image is obtained;The transformation matrix is converted to the three -dimensional space coordinate PS 'of the original iris image, and the three -dimensional space coordinate PS of the iris image after the correction is obtained.The invention also revealed a iris image perspective correction device and mobile terminal.

Description

technical field [0001] The present invention relates to the field of image processing and pattern recognition, and more specifically, to a method, device and mobile terminal for iris image perspective correction. Background technique [0002] With the rapid development of smart mobile terminals and network technology, people's requirements for the security and stability of information, especially personal information, are constantly increasing, and the application of identity authentication using people's inherent unique physiological or behavioral characteristics is becoming more and more extensive. Among them, in addition to fingerprint recognition, face recognition and other technologies, another more secure iris recognition technology is also increasingly favored by people. Moreover, with the continuous advancement of technology, iris recognition systems are gradually applied to small, light, and portable electronic devices such as mobile phones, tablets, and notebooks. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06V40/193G06V40/18
Inventor 王晓鹏
Owner 徐鹤菲
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