Iris image noise classification detection method

A detection method and iris image technology, which is applied in image analysis, image enhancement, image data processing, etc., can solve the problems of iris image interference noise, affecting system recognition rate, etc., and achieve the effect of improving efficiency

Active Publication Date: 2016-06-01
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for classifying and detecting iris image nois

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  • Iris image noise classification detection method
  • Iris image noise classification detection method
  • Iris image noise classification detection method

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Embodiment Construction

[0048] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0049] Such as figure 1 As shown, the invention discloses a kind of concrete steps of iris image noise classification detection method are:

[0050] The first step is to detect the image point noise of the light source in the iris area

[0051] Since the imaging module of the iris recognition system is illuminated by an infrared light source, there will be light source pixels in the iris image of the human eye, and the light source pixels located in the iris area will block the iris texture and affect the accuracy of reco...

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Abstract

The invention discloses an iris image noise classification detection method, which comprises steps: S1, light source image point noise in an iris area is detected; S2, eyelid noise in the iris area is detected; S3, eyelash noise in the iris area is detected; and S4, based on the light source image point noise information, the eyelid noise information and the eyelash noise information detected and obtained in steps from the first to the third, all noise points in the iris area are marked, and the pixel point is eliminated. The technical scheme of the invention can effectively and accurately eliminate interference on iris positioning and feature extraction by the noise.

Description

technical field [0001] The invention relates to an image noise detection method, in particular to an iris image noise detection method used in an iris biometric identification system. Background technique [0002] Iris recognition has significant advantages such as high accuracy, strong stability, good anti-counterfeiting and non-contact detection. It is currently the most advanced biometric technology known. In the iris recognition system, obtaining high-quality iris images is the premise of improving the recognition efficiency. However, in practical applications, the iris area in the iris image will be disturbed by noises such as light source pixels, eyelids and eyelashes; if these noises are not detected and their interference is eliminated, the accuracy of iris positioning will be affected, and the extracted The invalid iris features will also increase, so that the accuracy of iris recognition will be greatly reduced. Therefore, in the process of iris image preprocessi...

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Application Information

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IPC IPC(8): G06T5/00G06K9/00G06T7/00
CPCG06T5/002G06T2207/30168G06V40/193G06V40/197
Inventor 郭慧杰杨倩倩王超楠韩一梁杨昆
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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