Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus for calculating the rotational angle of a fingerprint image to accurately calculate the angle of an inclination from the reference position of a fingerprint image even if the contour of a fingerprint area is imperfect. SOLUTION: A painted-out image 200 is created out of an input fingerprint image 100. Boundaries 401, 402 between a fingerprint area 202 and a background area 201 in the painted-out image 200 are extracted (boundary image 400). Boundary approximate straight lines 411, 412, which are straight lines approximating portions of the boundaries 401, 402, are calculated (explanatory boundary image 410). A rotational angle θ is calculated on the basis of the boundary approximate straight lines 411, 412 (explanatory boundary image 420). The reliability of the two approximate straight lines is determined, and the rotational angle θ is calculated not on the basis of an unreliable approximate straight line but on the basis of a reliable approximate straight line. If neither of the straight lines is reliable, the rotational angle θ is calculated on the basis of an area approximate straight line 221, i.e., a straight line approximating the fingerprint area 202 in the painted-out image 200 (illustration 220). COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an optical non-contact fingerprint input device and a fingerprint collating device using the non-contact fingerprint input device with a higher collation rate. SOLUTION: A guide member 16 is provided for guiding a finger 5 into an imaging position from the front and right and left. Two push button type switches 13, 13 having protrusions 14 pushed in when the finger 5 is put in the imaging position, to detect that the finger 5 is in the imaging position, are provided in front of the guide member 16. A window part 17 opened to image the finger 5 in non-contact from below is provided behind the switches 13. Two light sources 11, 11 of light emitting diodes are provided below the window part 17. A CCD camera 12 which is an imaging element for imaging a fingerprint image of the finger 5 is provided between the two light sources 11, 11. When the input of the switches 13 is detected, the fingerprint image of the finger 5 disposed above the window part 17 is imaged by the CCD camera 12. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a singing skill evaluation method capable of calculating a score close to human subjective evaluation and a Karaoke machine having a singing skill evaluation function capable of calculating a score close to the human subjective evaluation. SOLUTION: A pitch extraction part 13 extracts a pitch from a voice signal input from a microphone 2. The pitch extraction part 13 extracts a pitch having extremely high interval resolution capable of dividing a chromatic scale into ten or more portions in the whole human singing registers. A vibrato detection part 14 detects a vibrato from the input voice signal. A score calculation part 15 separates the input voice into a normal singing section and a vibrato singing section to score the voice. In the scoring of the normal singing section, whether the pitch is put on an equal temperament scale or not is decided and a score is calculated on the basis of the decided result. COPYRIGHT: (C)2008,JPO&INPIT