Venu GovindarajuDept. of Computer Science &
EngineeringUniversity at Buffalo
Pattern Analysis and Machine Intelligence Applications
Research Projects Document Image Analysis and Recognition
Interactive Recognition NSF: 2003-04 Digital Libraries NSF: 2002-04 Public Health Surveillance NSF: 2003-04
Unified Biometrics and SensorsBiometric Systems NYSTAR: 2003-0Fingerprint Recognition Ultra-Scan Inc: 2002-04Hand Geometry Infinite Group Inc : 2003-04Cancelable Biometrics CUBRC: 2003-04Patho-biometrics AFMIC: 2003-04
Document Analysis and Recognition
Goal: Everything that can be done with symbolically encoded data can also be done with scanned hardcopy documents.
Searching document images, presenting them legibly, navigating within and among them.
Context Ranked Lexicon
PhD Student: Vemulapati Ramanaprasad
I Interactive Recognition Models
I Interactive Recognition Models
Context Ranked Lexicon
Grapheme Models
Structural Features, BAG
JunctionLoops
LoopTurns
End
End
Continuous Attributes
grapheme
pos orientation
angle
Down cusp
3.0 -90o
Up loop
Down arc
II Multilingual Digital Libraries
South Asian Languages South Asian Languages Hindi (Devanagari script), Urdu (Arabic Script), Hindi (Devanagari script), Urdu (Arabic Script), TeluguTeluguCovers a billion people! Covers a billion people! Script discriminationScript discriminationMultilingual queryingMultilingual querying
PhD Students: Faisal Farooq, Surya Kompalli
Digital Library application
Script Analysis
Document TruthGrayscale Images
Manual Truthing
OCR design
Semi-Automatic Annotation
MultilingualDigital
Archives
Multi-lingual Query Panel
english
II Public Health Surveillance
Thousands are filed a day.Passed from EMS to Hospital.
PCR Purpose:– Medical care/diagnosis– Legal Documentation– Quality Assurance
–EMS AbbreviationsCOPD Chronic Obstructive Pulmonary DiseaseCHF Congestive Heart FailureD/S Dextrose in SalinePID Pelvic Inflammatory DiseaseGSW Gunshot WoundNKA No known allergiesKVO Keep vein openNaCL Sodium Chloride
PhD Student: Robert Milewski
Medical Text Recognition and Data Mining
Check box recognition, Numeral recognition
Large lexicons, partial recognition, abbreviations
Chronic Obstructive Pulmonary Disease”: CRC-OBV-UOARY-DISAE
Contextual knowledge, constraints and lexicon reduction
Unified Biometrics and Sensors
Biometrics are automated methods of identifying a person or verifying the identity of a person based on a physiological or behavioral characteristic.
I UB STARS: Unobtrusive Biometric Sense Transmit Assess and Respond Systems
Packaged Device
Bright (Chem) Cartwright &
Sensors(Materials
Development)
Titus (EE)
Analog VLSI(Smart Systems)
Biometrics
(PatternRecognition &
Analysis)
Govindaraju
Cartwright (EE)
Light Sources(Materials
Development & Characterization)
II. Fingerprint Analysis and Recognition
PhD Students: Tsai-yang Jea, Chaohong Wu
Partial matching
?
Latent partial fingerprints 0102030405060708090
100
0 10 20 30 40 50 60 70 80 90 100
Size(%)
Rate
CorrectRate
ErrorRate
Threshold 0.35
0102030405060708090
100
0 10 20 30 40 50 60 70 80 90 100
Size(%)
Rat
e
CorrectRate
ErrorRate
RejectRate
III Hand Geometry
Hand geometry biometrics
and fingerprints
IV Cancelable Biometrics
Intentional, repeatable distortion of Intentional, repeatable distortion of biometric signal based on a chosen biometric signal based on a chosen transform transform One-way non-invertible mapping using One-way non-invertible mapping using another biometric data giving layered another biometric data giving layered securitysecurity Transform minutiae points on Transform minutiae points on fingerprints using signature featuresfingerprints using signature features
PhD Student: Sergey Tulyakov
V Animal Biometrics
Visible Symptoms of FMD
–Straying from the herd
–Swaying gait, sometimes with high stepping of the feet
–Difficulties in walking or getting up
–Loss of weight, milk yield
Texture Analysis
Original image Empty field Animals
Other Projects
Signature Verification HanSheng Lei (PhD) Srinivas Palla (MS)
Devanagari OCR Swapnil Khedekar (MS)
Biometric Data Representation Viraj Chavan (MS)
Web Security and CAPTCHA Sumit Manocha (MS)
Video HWR Sijun Kung (PhD)
