Method for verifying the authencity of a fingerprint

A biometric verification device for verifying authenticity of a fingerprint comprising:

• processing circuitry configured to
• acquire a reference image of a reference fingerprint;
• extract reference digital geometric configuration information;
• extract a geometric characteristic of a pattern of said reference fingerprint from said reference image;
• acquire a candidate image of a candidate fingerprint;
• extract candidate digital geometric configuration information;
• extract the geometric characteristic of a pattern of said candidate fingerprint from said candidate image;
• compare between the geometric characteristic of the pattern of said reference print and the geometric characteristic of the pattern of said candidate print, said geometric characteristics of the patterns being of local nature;
• then, determine angular geometric coherence between said reference print and said candidate print based on a result of the comparison and on the geometric configuration information, said geometric configuration information being of overall nature;
• determine authenticity of said candidate fingerprint based on a result of the determined angular geometric coherence;
• calculate an overall angle of rotation between said reference print and said candidate print;
• and
• calculate a local angle of rotation between said geometric characteristic of the pattern of said reference print and said geometric characteristic of a pattern of said candidate print.

A non-transitory computer readable medium having stored thereon a computer program that when executed by processing circuitry of a computer causes the processing circuitry to be configured to implement a biometric verification method for verifying authenticity of a fingerprint, the verification method comprising:

• acquiring a reference image of a reference fingerprint;
• extracting reference digital geometric configuration information;
• extracting a geometric characteristic of a pattern of said reference fingerprint from said reference image;
• acquiring a candidate image of a candidate fingerprint;
• extracting candidate digital geometric configuration information;
• extracting the geometric characteristic of a pattern of said candidate fingerprint from said candidate image;
• comparing between the geometric characteristic of the pattern of said reference print and the geometric characteristic of the pattern of said candidate print, said geometric characteristics of the patterns being of local nature;
• then, determining angular geometric coherence between said reference print and said candidate print based on a result of the comparing and on the geometric configuration information, said geometric configuration information being of overall nature;
• determining authenticity of said candidate fingerprint based on a result of the determined angular geometric coherence;
• calculating an overall angle of rotation between said reference print and said candidate print;
• and
• calculating a local angle of rotation between said geometric characteristic of the pattern of said reference print and said geometric characteristic of a pattern of said candidate print.