BIOMETRICS LAB
Biometric Standards, Performance and Assurance Laboratory
Department of Technology, Leadership and Innovati...
HAND GEOMETRY
• Measures length,
width, and thickness
of hand [1]
• Engages 1:1 matching by entering a
Personal Identifica...
USES
• Joins a PIN number with the security of
biometric verification
• Commonly used in time and attendance
and access co...
BENEFITS
• Hand geometry functions as a medium
cost system with fast computational
speeds, low template size, and good
eas...
TIME ON TASK
• Computational speed is always a
primary concern
• Slow throughput times may eliminate the
cost savings prop...
VIDEO CODING
• Previous studies suggest video
recording in order to capture subject time
on task [6]
• Time consuming proc...
INTERRATER RELIABILITY
• Represents the degree to which the
ratings of different judges are
proportional when expressed as...
OPERATIONAL TIMES
• Previous research has suggested
models for biometric transaction times
• Biometric transaction time in...
OPERATIONAL TIME MODEL
[8]
BIOMETRICS LAB
Biometric Standards, Performance and Assurance Laboratory
Department of Technology, Leadership and Innovati...
DEVICE
• Ingersoll Rand
Handkey II
• Hand geometry
biometric device
CAMERA
• Logitech HD Pro C910
Webcam
– 1080p recording
• Used to video record
interaction changes on
hand geometry device
SETUP
• Camera placed 24 cm above
hand geometry machine
• Device placed 90 cm above
ground level
EXPERIMENT
• Hand geometry data was collected as
part of a larger multi-modal study
• This data collection included 35 sub...
BIOMETRICS LAB
Biometric Standards, Performance and Assurance Laboratory
Department of Technology, Leadership and Innovati...
USES
• An automated tool was created to
analyze the videos
• Analyzes videos to 15 frames per
second
• Detects light chang...
CROPPING
FRAME SELECTION
LIGHT SELECTION
BIOMETRICS LAB
Biometric Standards, Performance and Assurance Laboratory
Department of Technology, Leadership and Innovati...
SYSTEM READY
• System
ready
USER MAKES A CLAIM OR
PRESENTS AN IDENTITY
• User
enters
PIN
SAMPLE ACQUISITION
• Lights all
on
SAMPLE ACQUISITION
• User
places
hand
SAMPLE ACQUISITION
• Lights
change
SAMPLE ACQUISITION
• Lights
continue
to
change
SAMPLE ACQUISITION
• Lights all
off
BIOMETRIC SUBSYSTEM
DECISION
• Green or
red light
EXTERNAL CONTROL ACTION
• Not used in this study
• External control may be opening door or
granting access to system
COMBINATION OF MODELS
BIOMETRICS LAB
Biometric Standards, Performance and Assurance Laboratory
Department of Technology, Leadership and Innovati...
CONFLICTING TERMINOLOGY
• Along with the model, we include specific
terminology and emphasize the linkages
between the two...
TRANSACTION
• The sequence of attempts to the system
on the part of the user for the purpose of
enrollment, verification o...
ATTEMPT
• The submission of one (or a sequence
of) biometric samples to the system on
the part of the user
– One or more a...
PRESENTATION
• The submission of a single biometric
sample to the system on the part of the
user
– One or more presentatio...
INTERACTION
• The action(s) that take place within a
presentation
– One or more interactions will create one
presentation
...
HIERARCHY
Transaction
Attempt 1
Presentation
1
Interaction 1
Attempt 2
Presentation
2
Interaction 2
………
Attempt N
Presenta...
BIOMETRICS LAB
Biometric Standards, Performance and Assurance Laboratory
Department of Technology, Leadership and Innovati...
ENROLLMENT TIME
INDIVIDUAL VERIFICATION TIME
VERIFICATION TIME
BIOMETRICS LAB
Biometric Standards, Performance and Assurance Laboratory
Department of Technology, Leadership and Innovati...
BENEFITS OF AUTOMATIC
CODING
• Eliminates need for manual video coding
• Video coding is a time consuming task
and has pot...
LESSONS LEARNED
• Experimental test conditions are not
always stable
– Due to cameras being moved/bumped, they
will not al...
RELATION TO HBSI
• This experiment addresses the need to
automate the error detection in the
Human Biometric Sensor Intera...
HBSI ERROR METRICS
HBSI
• This philosophy can be duplicated to
record these error metrics
• Ex. 1 If all lights are extinguished and
green li...
NEXT STEPS
• Methodology can be replicated for other
modalities as well
• Any system that provides feedback can
be video r...
CONTACT INFORMATION
• Michael Brockly
– mbrockly@purdue.edu
• Stephen Elliott Ph.D.
– elliott@purdue.edu
BIOMETRICS LAB
Biometric Standards, Performance and Assurance Laboratory
Department of Technology, Leadership and Innovati...
REFERENCES
[1] Sidlauskas, D., Tamer, S., (2007). Hand Geometry Recognition.
Handbook of Biometrics. Springer US. doi: 10....
REFERENCES
[5] Poh, N., Bourlai, T., & Kittler, J. (2010). A multimodal biometric test bed
for quality-dependent, cost-sen...
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(2013) Automatic Detection of Biometrics Transaction Times

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Presented at ICITA 2013, 8th International Conference on Information Technology and Applications, Sydney, Australia, 1 - 4 July, 2013

The purpose of this paper is to illustrate the automatic detection of biometric transaction times using hand geometry as the modality of interest. Video recordings were segmented into individual frames and processed through a program to automatically detect interactions between the user and the system. Results include a mean enrollment time of 15.860 seconds and a mean verification time of 2.915 seconds.

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  • 1. Sidlauskas, D., Tamer, S., (2007). Hand Geometry Recognition. Handbook of Biometrics. Springer US. doi: 10.1007/978-0-387-71041-9_5
  • 2. Liu, S., & Silverman, M. (2001). A practical guide to biometric security technology. IT Professional, 3(1), 27–32. Retrieved from http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=899930
  • 3. Sanchez-Reillo, R., & Gonzalez-Marcas, A. (2000). Access control system with hand geometry verification and smart cards. Aerospace and Electronic Systems Magazine, IEEE, 15(45), 45–48. Retrieved from http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=8256714. Tamer, S., Elliott, S., (2009, July) Time and Attendance. Encyclopedia of Biometrics. Springer US. doi:10.1007/978-0-387-73003-5_114
  • 5. Poh, N., Bourlai, T., & Kittler, J. (2010). A multimodal biometric test bed for quality-dependent, cost-sensitive and client-specific score-level fusion algorithms. Pattern Recognition, 43(3), 1094–1105. doi:10.1016/j.patcog.2009.09.011
  • 6. Bailey, B. P., Konstan, J. a., & Carlis, J. V. (2000). Measuring the effects of interruptions on task performance in the user interface. SMC 2000 Conference Proceedings. 2000 IEEE International Conference on Systems, Man and Cybernetics. “Cybernetics Evolving to Systems, Humans, Organizations, and their Complex Interactions” (Cat. No.00CH37166), 2, 757–762. doi:10.1109/ICSMC.2000.885940
  • 7. Tinsley, H. E. A., & Weiss, D. J. (1975). Interrater Reliability and Agreement of Subjective Judgments. Journal of Counseling Psychology, 22(4), 358–376.
  • 8. Lazarick, R. T., Kukula, E. P., & Elliott, S. J. (2009, July). Operational Times. Encyclopedia of Biometrics. Springer US. doi:10.1007/978-0-387-73003-5_114
  • This process begins when the PIN is enteredFor hand geometry verification only one attempt is given in the transaction.
  • In verification, one attempt contains one presentation.
  • Hand geometry enrollment is made up of 3 presentations of sufficient quality.
  • Signified by the lights on the hand geometry machine changing color. This may happen many times within a presentation to the systemInteraction occurs between the subject and the system.Instructions should be provided to the subject before the first interaction begins.
  • Video coding provides consistency.Bullet 2 is a rehash from the introduction
  • (2013) Automatic Detection of Biometrics Transaction Times

    1. 1. BIOMETRICS LAB Biometric Standards, Performance and Assurance Laboratory Department of Technology, Leadership and Innovation AUTOMATIC DETECTION OF BIOMETRIC TRANSACTION TIMES MICHAEL BROCKLY STEPHEN ELLIOTT PH.D.
    2. 2. HAND GEOMETRY • Measures length, width, and thickness of hand [1] • Engages 1:1 matching by entering a Personal Identification Number (PIN) [1]
    3. 3. USES • Joins a PIN number with the security of biometric verification • Commonly used in time and attendance and access control • Hand geometry has proven to be very popular in time and attendance recording [2]
    4. 4. BENEFITS • Hand geometry functions as a medium cost system with fast computational speeds, low template size, and good ease of use [3] • The convenience of hand geometry stems from the fact that users cannot lose or forget their biometric credential [4]
    5. 5. TIME ON TASK • Computational speed is always a primary concern • Slow throughput times may eliminate the cost savings proposed by device installation • Higher costs are associated with a higher time to acquire or process a biometric sample [5]
    6. 6. VIDEO CODING • Previous studies suggest video recording in order to capture subject time on task [6] • Time consuming process to manually record timing data • Potential for errors and inconsistencies
    7. 7. INTERRATER RELIABILITY • Represents the degree to which the ratings of different judges are proportional when expressed as deviations from their means [7] • Not all video coders will report the same result
    8. 8. OPERATIONAL TIMES • Previous research has suggested models for biometric transaction times • Biometric transaction time includes: – Subject interaction time – Biometric subsystem processing time – Biometric subsystem decision time – External control access time
    9. 9. OPERATIONAL TIME MODEL [8]
    10. 10. BIOMETRICS LAB Biometric Standards, Performance and Assurance Laboratory Department of Technology, Leadership and Innovation EXPERIMENTAL SETUP
    11. 11. DEVICE • Ingersoll Rand Handkey II • Hand geometry biometric device
    12. 12. CAMERA • Logitech HD Pro C910 Webcam – 1080p recording • Used to video record interaction changes on hand geometry device
    13. 13. SETUP • Camera placed 24 cm above hand geometry machine • Device placed 90 cm above ground level
    14. 14. EXPERIMENT • Hand geometry data was collected as part of a larger multi-modal study • This data collection included 35 subjects • Other modalities collected include fingerprint, iris, face, signature, and palm vein
    15. 15. BIOMETRICS LAB Biometric Standards, Performance and Assurance Laboratory Department of Technology, Leadership and Innovation VIDEO ANALYSIS
    16. 16. USES • An automated tool was created to analyze the videos • Analyzes videos to 15 frames per second • Detects light changes on device as pixel color thresholds are crossed • Writes results without human coder
    17. 17. CROPPING
    18. 18. FRAME SELECTION
    19. 19. LIGHT SELECTION
    20. 20. BIOMETRICS LAB Biometric Standards, Performance and Assurance Laboratory Department of Technology, Leadership and Innovation TRANSACTION TIME USE CASE – HAND GEOMETRY
    21. 21. SYSTEM READY • System ready
    22. 22. USER MAKES A CLAIM OR PRESENTS AN IDENTITY • User enters PIN
    23. 23. SAMPLE ACQUISITION • Lights all on
    24. 24. SAMPLE ACQUISITION • User places hand
    25. 25. SAMPLE ACQUISITION • Lights change
    26. 26. SAMPLE ACQUISITION • Lights continue to change
    27. 27. SAMPLE ACQUISITION • Lights all off
    28. 28. BIOMETRIC SUBSYSTEM DECISION • Green or red light
    29. 29. EXTERNAL CONTROL ACTION • Not used in this study • External control may be opening door or granting access to system
    30. 30. COMBINATION OF MODELS
    31. 31. BIOMETRICS LAB Biometric Standards, Performance and Assurance Laboratory Department of Technology, Leadership and Innovation TERMINOLOGY
    32. 32. CONFLICTING TERMINOLOGY • Along with the model, we include specific terminology and emphasize the linkages between the two versions
    33. 33. TRANSACTION • The sequence of attempts to the system on the part of the user for the purpose of enrollment, verification or identification • This definition follows ISO/IEC FCD 19795-1’s definition of a transaction
    34. 34. ATTEMPT • The submission of one (or a sequence of) biometric samples to the system on the part of the user – One or more attempts as allowed by the biometric system will create one transaction • This definition follows ISO/IEC FCD 19795-1’s definition of an attempt
    35. 35. PRESENTATION • The submission of a single biometric sample to the system on the part of the user – One or more presentations as allowed by the biometric system will create one attempt • This definition follows ISO/IEC FCD 19795-1’s definition of a presentation
    36. 36. INTERACTION • The action(s) that take place within a presentation – One or more interactions will create one presentation • This definition conflicts with ISO/IEC FCD 19795-1’s definition as “a sequence of transactions”
    37. 37. HIERARCHY Transaction Attempt 1 Presentation 1 Interaction 1 Attempt 2 Presentation 2 Interaction 2 ……… Attempt N Presentation N Interaction N
    38. 38. BIOMETRICS LAB Biometric Standards, Performance and Assurance Laboratory Department of Technology, Leadership and Innovation RESULTS
    39. 39. ENROLLMENT TIME
    40. 40. INDIVIDUAL VERIFICATION TIME
    41. 41. VERIFICATION TIME
    42. 42. BIOMETRICS LAB Biometric Standards, Performance and Assurance Laboratory Department of Technology, Leadership and Innovation CONCLUSIONS
    43. 43. BENEFITS OF AUTOMATIC CODING • Eliminates need for manual video coding • Video coding is a time consuming task and has potential for errors • Goal is to create a consistent measure of biometric transactions
    44. 44. LESSONS LEARNED • Experimental test conditions are not always stable – Due to cameras being moved/bumped, they will not always be in the same location • Original version of software did not take this into account • Second version allowed the area of interest to be selected based on a frame of the video
    45. 45. RELATION TO HBSI • This experiment addresses the need to automate the error detection in the Human Biometric Sensor Interaction (HBSI) model • HBSI is concerned with classifying correct and incorrect presentations into quantifiable metrics
    46. 46. HBSI ERROR METRICS
    47. 47. HBSI • This philosophy can be duplicated to record these error metrics • Ex. 1 If all lights are extinguished and green light is shown, SPS • Ex 2. If all lights remain on until system time out and red light is shown, FTD
    48. 48. NEXT STEPS • Methodology can be replicated for other modalities as well • Any system that provides feedback can be video recorded and analyzed • Automatically code HBSI error metrics
    49. 49. CONTACT INFORMATION • Michael Brockly – mbrockly@purdue.edu • Stephen Elliott Ph.D. – elliott@purdue.edu
    50. 50. BIOMETRICS LAB Biometric Standards, Performance and Assurance Laboratory Department of Technology, Leadership and Innovation QUESTIONS?
    51. 51. REFERENCES [1] Sidlauskas, D., Tamer, S., (2007). Hand Geometry Recognition. Handbook of Biometrics. Springer US. doi: 10.1007/978-0-387- 71041-9_5 [2] Liu, S., & Silverman, M. (2001). A practical guide to biometric security technology. IT Professional, 3(1), 27–32. Retrieved from http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=899930 [3] Sanchez-Reillo, R., & Gonzalez-Marcas, A. (2000). Access control system with hand geometry verification and smart cards. Aerospace and Electronic Systems Magazine, IEEE, 15(45), 45–48. Retrieved from http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=82 5671 [4] Tamer, S., Elliott, S., (2009, July) Time and Attendance. Encyclopedia of Biometrics. Springer US. doi:10.1007/978-0-387- 73003-5_114
    52. 52. REFERENCES [5] Poh, N., Bourlai, T., & Kittler, J. (2010). A multimodal biometric test bed for quality-dependent, cost-sensitive and client-specific score-level fusion algorithms. Pattern Recognition, 43(3), 1094–1105. doi:10.1016/j.patcog.2009.09.011 [6] Bailey, B. P., Konstan, J. a., & Carlis, J. V. (2000). Measuring the effects of interruptions on task performance in the user interface. SMC 2000 Conference Proceedings. 2000 IEEE International Conference on Systems, Man and Cybernetics. “Cybernetics Evolving to Systems, Humans, Organizations, and their Complex Interactions” (Cat. No.00CH37166), 2, 757–762. doi:10.1109/ICSMC.2000.885940 [7] Reliability and Agreement of Subjective Judgments. Journal of Counseling Psychology, 22(4), 358–376. [8] Lazarick, R. T., Kukula, E. P., & Elliott, S. J. (2009, July). Operational Times. Encyclopedia of Biometrics. Springer US. doi:10.1007/978-0-387-73003-5_114

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