A method and system for detecting human iris in pictures
An iris-in-picture technology, applied in the acquisition/recognition of eyes, instruments, calculations, etc., can solve the problems of high pixel sampling, slow detection speed, inability to exclude eyelashes and eyelids, etc., to eliminate interference effects and speed up detection. Effect
Active Publication Date: 2019-03-22
CHENDU PINGUO TECH CO LTD
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The above methods all require that the sampled photos have high pixels and need to be taken together specially; interference such as eyelashes and eyelids cannot be ruled out; and the traditional method of searching the center of the circle has a very large search range, and it is necessary to calculate each point in the image with this point as A series of circles with different radii in the center, and then count the scores of each radius circle, the detection speed is slow
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[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further elaborated below in conjunction with the accompanying drawings.
[0038] In this example, see figure 1 As shown, the present invention proposes a method for detecting the iris of the human eye in a picture, comprising steps:
[0039] (1) Use the client camera to acquire eye images.
[0040] The acquisition method of the eye image is as follows: detecting the human face through machine learning to obtain the key points of the detected human face, and extracting the eye key points to form the eye image.
[0041] The method for obtaining the eye image may also be, through user interaction, clicking on the screen to obtain the eye image.
[0042] (2) Convert the eye image into a grayscale image.
[0043] The eye image is an RGB image, and the eye image is converted into a grayscale image by using the values of the three channels of R, G,...
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The invention belongs to the field of communication technology, and discloses a method and system for detecting the iris of a human eye in a picture, comprising the steps of acquiring an eye image by using a client camera; converting the eye image into a grayscale image; Carry out filter calculation and rectangular block gray value statistics, obtain the estimated center of circle and the estimated radius of iris; According to described estimated circle center and estimated radius, utilize the method iterative solution of progressive step to reset circle center, obtain the precise circle center of iris and precise radius; Send the exact center and radius of the iris to the client. The invention can accurately locate the center position and radius of the iris of the eye, can better eliminate interference such as eyelashes and eyelids, and greatly accelerates the detection speed.
Description
technical field [0001] The invention belongs to the technical field of human eye detection, in particular to a method and system for detecting the iris of a human eye in a picture. Background technique [0002] In recent years, with the advancement of the front camera and rear camera of mobile phones, the images captured have become clearer and clearer, and the eye images obtained have also become better and better. R&D personnel can obtain eye images through the terminal for many tasks: from security From a perspective, fingerprint unlocking is widely used now, but unlocking through iris is much safer than fingerprint; from the perspective of simplifying the habit of using mobile phones, you can also write an APP to control the mobile phone to turn pages through the moving direction of the pupil in the iris etc.; From the perspective of beautifying photos, you can beautify the iris photos to achieve the effect of wearing colored contact lenses, or enlarge the eyes to look m...
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IPC IPC(8): G06K9/00
CPCG06V40/193
Inventor 刘鹏
Owner CHENDU PINGUO TECH CO LTD