Image manipulation utilizing edge detection and stitching for fingerprint recognition
First Claim
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1. An error correction method, comprising:
- receiving fingerprint image information including a set of swatches;
matching a first one of the swatches and a second one of the swatches at an edge;
determining a measure of fingerprint image manipulation responsive to an amount of individual swatch error and an amount of edge stitching error, the determining comprising;
determining the amount of individual swatch error that would be present before and after each one of a set of possible operations of manipulating the fingerprint image information; and
determining the amount of edge stitching error that would be present before and after each one of the set of possible operations of manipulating the fingerprint image information; and
manipulating the fingerprint image information based on one or more determined values of the measures.
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Abstract
An error correction method and a mobile communication device incorporating the error correction method. The error correction method begins with receiving fingerprint image information that includes a set of swatches. A first one of the received swatches is matched to a second one of the swatches at an edge. A measure of fingerprint image manipulation is determined responsive to an amount of processing to perform and an amount of fingerprint image error. Then the fingerprint image information is manipulated in response to an optimum value of the measure.
69 Citations
12 Claims
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1. An error correction method, comprising:
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receiving fingerprint image information including a set of swatches; matching a first one of the swatches and a second one of the swatches at an edge; determining a measure of fingerprint image manipulation responsive to an amount of individual swatch error and an amount of edge stitching error, the determining comprising; determining the amount of individual swatch error that would be present before and after each one of a set of possible operations of manipulating the fingerprint image information; and determining the amount of edge stitching error that would be present before and after each one of the set of possible operations of manipulating the fingerprint image information; and manipulating the fingerprint image information based on one or more determined values of the measures. - View Dependent Claims (2)
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3. A mobile communication device, comprising:
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a processor, a touch screen communicatively coupled to the processor, the touch screen adapted to receive input through a user contacting or nearly contacting a surface of the touch screen; and a fingerprint sensor communicatively coupled to the processor and to the touch screen, the fingerprint sensor adapted to acquire fingerprint image information for one or more fingers of the user as the user enters touch input through the touch screen, wherein the fingerprint image information includes a set of swatches; wherein the processor is configured to; at least match a first one of the swatches and a second one of the swatches at an edge; determine a first signal to noise ratio for the first one of the swatches, the first signal to noise ratio corresponding to an amount of information missing from the first one of the swatches; determine at least one measure of fingerprint image manipulation based on one or more other signal to noise ratios and an amount of processing time associated with each signal to noise ratio; and manipulate the first one of the swatches based on a selected signal to noise ratio, the selected signal to noise ratio selected from the one or more other signal to noise ratios. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10)
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11. An error correction method for fingerprint image processing, the method comprising:
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receiving fingerprint image information including a set of swatches; matching a first one of the swatches and a second one of the swatches at an edge; examining one or more portions of the first one of the swatches and the second one of the swatches for artifacts; determining a degree of correction to be applied to each individual portion of the first one and the second one of the swatches based on a degree of individual swatch errors for the first one of the swatches and the second one of the swatches and a degree of errors for edge stitching between the first one and the second one of the swatches, the determining comprising; determining an amount of individual swatch error that would be present before and after each one of a set of possible operations of manipulating the first one and the second one of the swatches; and determining an amount of edge stitching error that would be present before and after each one of the set of possible operations of manipulating the first one and the second one of the swatches; and manipulating at least one of the first one and the second one of the swatches based on a particular value of the degree of correction. - View Dependent Claims (12)
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Specification