VIEWS: 40 PAGES: 21 POSTED ON: 1/31/2012
FACIAL RECOGNITION TECHNOLOGY Prepared By : OUTLINE WHAT IS BIOMETRICS? WHAT IS FACIAL RECOGNITION TECHNOLOGY? CONTROVERSY MY OPINION OF THIS TECHNOLOGY QUESTIONS???????? WHAT IS BIOMETRICS? BIOMETRICS – any automatically measurable, robust and distinctive physical characteristic or personal trait that can be used to identify an individual or verify the claimed identity of an individual. TWO MAIN USES 1) IDENTFICATION -figure out “Who is X?” -accomplished by system performing a “one-to-many” search 2) VERIFICATION -answer the question “Is this X?” -accomplished by the system performing a “one-to-one” search TYPES OF BIOMETRICS Iris Scanning -measures the iris patter in the colored part of the eye Retinal Scan -measures the blood vessel patterns in the back of the eye TYPES OF BIOMETRICS Voice Recognition -measures the vocal characteristics of a person using a specific phrase Finger Printing -measures the unique pattern of lines on a persons finger FACIAL RECOGNITION Facial recognition is a form of computer vision that uses faces to attempt to identify a person or verify a person’s claimed identity. Regardless of specific method used, the facial recognition is accomplished in a five step process. FIVE STEP PROCESS (STEP 1) ACQUIRING THE IMAGE OF AN INDIVIDUALS FACE 2 WAYS TO AQUIRE IMAGE 1)Digitally scan an existing photograph 2)Acquire a live picture of a subject FIVE STEP PROCESS (STEP 2) LOCATE IMAGE OF FACE -software is used to locate the faces in the image that has been obtained FIVE STEP PROCESS (STEP 2) FIVE STEP PROCESS (STEP 3) ANALYSIS OF FACIAL IMAGE -software measures face according to is peaks and valleys (nodal points) -focuses on the inner region of the face known as the “golden triangle” -nodal points are used to make a face print FIVE STEP PROCESS (STEP 4) COMPARISON -the face print created by the software is compared to all face prints the system has stored in its database. FIVE STEP PROCESS (STEP 5) MATCH OR NO MATCH -software decides whether or not any comparisons from step 4 are close enough to declare a possible match FINAL STEP THE HUMAN OPERATOR CONTROVERSY VIOLATION OF CONSTITUTION RIGHT AGAINST UNREASONABLE SEARCH? United States v. Dionisio, 410 U.S. 1, 14 (1973) -person does not have a reasonable expectation of privacy of those physical characteristics that are constantly exposed to the public such as one’s facial features, voice and handwriting CONTROVERSY THE BORDER EXCEPTION -the fourth amendment recognizes the longstanding right of the sovereign to protect itself by stopping and examining persons and property crossing into this country MY THOUGHTS ON FACIAL RECOGNITION TECHNOLGY REVIEW WHAT IS BIOMETRIC? WHAT IS FACIAL RECOGNTION TECHNOLOGY? CONTROVERSY MY OPINION QUESTIONS??????
Pages to are hidden for
"face recognition (PowerPoint)"Please download to view full document