Finger print collecting and joining method supporting arbitrary directional rolling

Abstract

The invention relates to a method for collecting and splicing a fingerprint, which can support the rolling in any direction and is a method for identifying and processing a fingerprint picture. The method applies a fingerprint collecting system which is composed of a fingerprint collector, a computer and a fingerprint collecting and splicing program, and comprises the steps of starting the initialization of the fingerprint collecting and splicing program, initial collecting, formal collecting, determining a fingerprint area of a current frame, updating a spliced picture, determining a fingerprint area of the spliced picture, generating a picture with splicing effects and displaying the picture with splicing effects. The method adopts a picture splicing method with a background picture as a reference and eliminates the restriction of the rolling direction during a fingerprint collecting process by rolling so that a complete fingerprint splicing picture can be formed with a finger to roll on a fingerprint collecting surface in any direction. In addition, the method also applies the weighted average method to process edges of the fingerprint splicing picture to ensure that the spliced fingerprint picture can be more natural and smooth.

Description

technical field [0001] The invention relates to a method for collecting and splicing fingerprints that supports scrolling in any direction, a method for processing a record carrier, a method for identifying graphics, and a method for identifying and processing fingerprint graphics. Background technique [0002] As a very effective identification, fingerprint collection is more and more widely used in various industries. With the popularization of fingerprint collection, it is found that only one frontal fingerprint collection cannot effectively identify fingerprints correctly under complex conditions. For example, the fingerprints left by criminals at the scene are often not positive fingerprints, but fingerprints that refer to the side or the front or the rear. Therefore, it is necessary to collect fingerprint images in all directions of the finger during fingerprint collection to obtain a complete finger fingerprint image. To obtain a complete fingerprint image of a fing...

AI Technical Summary

Problems solved by technology

The problem is that, firstly, the method of scrolling fingerprints of the person to be collected must be limited, that is, only horizontal scrolling is allowed; secondly, the algorithm needs to judge whether it is left or right, and there is a certain probability of wrong judgment in this link. When the judgment is wrong, fingerprint splicing cannot be done. Do it right

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