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High-efficiency fingerprint image processing method

A fingerprint image and processing method technology, which is applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve the problems of time-consuming and memory-consuming image processing

Inactive Publication Date: 2013-09-25
MOREVALUED TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0007] In order to solve the above-mentioned deficiencies in the prior art, the object of the present invention is to provide an improved high-performance fingerprint image processing method to improve the time-consuming image processing and consume a large amount of memory in the prior art.

Method used

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Embodiment Construction

[0035] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0036] Please refer to figure 1 As shown, the high-efficiency fingerprint image processing method of the present invention is used in the automatic fingerprint identification process, by applying the image-enhanced composite mask algorithm on the processor to process the collected gray-scale fingerprint images to be processed, and further It is converted into a binarized image, which may include the following steps:

[0037] 1. Flow direction judgment

[0038] 2. Linear filtering of composite filtering

[0039] 3. Diamond filtering of composite filtering

[0040] 4. Binarization

[0041] The aforementioned flow direction judgment is also to judge the flow direction of the original fingerprint. Before the processor performs the image enhancement calculation, it needs to evaluate the local direction of ...

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Abstract

The invention relates to a high-efficiency fingerprint image processing method. After a fingerprint flow direction judgment is acquired, the image enhancement by utilizing frequency-domain filtering in the prior art is substituted by combining two composite filtering modes of linear filtering and rhombic filtering, and image enhancement characteristics are displayed by utilizing image binaryzation; a composite filter can assuredly carry out the image enhancement and repair break lines aiming at different flow directions of all points so as to reduce the situation of inaccurate judgment; and in addition, the high-efficiency fingerprint image processing method can save the filtering time and the storage space by using a filtering shade with relatively lower pixels so as to reduce the time and the storage space consumed by the fingerprint image enhancement.

Description

technical field [0001] The invention relates to a fingerprint image processing method, in particular to a fingerprint image processing method using a directional linear spatial filter and a rhombus spatial filter as image enhancement means according to the fingerprint flow direction of each point. Background technique [0002] The skin surface of the palm of the human body and its fingers, feet, and toes has uneven lines, which increase the friction of the skin surface, and the distribution of these skin lines, including fingerprints, in terms of graphics, interruption points and intersection points, is average for each person. It is different, and has its uniqueness. Through this uniqueness, each person's fingerprint can be collected and reserved in advance, and as a scientific and technical means of comparing to verify identity, it is fingerprint identification technology. [0003] The development of fingerprint identification technology has benefited from the research of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
Inventor 邱立国廖孟秋洪永庆
Owner MOREVALUED TECHNOLOGY CO LTD
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