30-03-2011, 12:46 PM
Breaking a Visual CAPTCHA
Research projects:
– QoS in wireless home networks
– Binaural computational source separation
– MiniWatt: estimating EM radiation
– Binary coding of XML metadata (for DVB)
– Visual authentication of digital documents
• People
– Chair, technical and administrative assistants,
five researchers, ten students
SWS, 8 credit points ⇒ 200–215 hours work
• Overall organization:
– Introductory Lecture (today)
• Demonstrate the „big“ image & show how the various components are linked
• Give a summary of potential topics to choose from
– Knowledge gathering and planning phase (the next three weeks)
• Reading and understanding the literature
• Defining the system blocks and their interfaces
• Writing a short summary of a topic
– Implementation phase (Matlab, until 23.01.2007)
• Writing the interfaces, ensuring the blocks properly communicate
• Writing the block’s implementation, documenting the code
• Testing and debugging
– Presentation phase (12.12.2006-07.02.2006)
• Write summary and prepare presentation (until 30.01.2007)
• Present the work (block seminar 06.–07.02.2007
• Language:
– English preferred (required for program documentation and slides) Knowledge Transfer
– Obtain understanding of the purpose and meaning of visual CAPTCHAs
– Get an extensive summary about attacks on visual CAPTCHAs
– Get in-depth knowledge of one pipeline step
– Prepare for further works on the subject
• Diploma / Master-Theses, Student Assistant for Research
• Experience the developer’s toolbox
– Project planning
• Read and understand literature on breaking visual CAPTCHAs
• Coordinate and cooperate with other students
– Implementation
• Develop a block in the CAPTCHA-breaking software pipeline
• Document the software
– Presentation
• Squeeze highly technical details into an easy-to-understand summary
• Demonstrate and explain the block
download full report
http://googleurl?sa=t&source=web&cd=7&ve....Intro.pdf&ei=3teSTdfGL8G9ceekrYkH&usg=AFQjCNFlnwgC2Tc-4gbg1_3oZiwDpAt3Eg&sig2=W_oQOsAVr487Lz6nbBBbPg
Research projects:
– QoS in wireless home networks
– Binaural computational source separation
– MiniWatt: estimating EM radiation
– Binary coding of XML metadata (for DVB)
– Visual authentication of digital documents
• People
– Chair, technical and administrative assistants,
five researchers, ten students
SWS, 8 credit points ⇒ 200–215 hours work
• Overall organization:
– Introductory Lecture (today)
• Demonstrate the „big“ image & show how the various components are linked
• Give a summary of potential topics to choose from
– Knowledge gathering and planning phase (the next three weeks)
• Reading and understanding the literature
• Defining the system blocks and their interfaces
• Writing a short summary of a topic
– Implementation phase (Matlab, until 23.01.2007)
• Writing the interfaces, ensuring the blocks properly communicate
• Writing the block’s implementation, documenting the code
• Testing and debugging
– Presentation phase (12.12.2006-07.02.2006)
• Write summary and prepare presentation (until 30.01.2007)
• Present the work (block seminar 06.–07.02.2007
• Language:
– English preferred (required for program documentation and slides) Knowledge Transfer
– Obtain understanding of the purpose and meaning of visual CAPTCHAs
– Get an extensive summary about attacks on visual CAPTCHAs
– Get in-depth knowledge of one pipeline step
– Prepare for further works on the subject
• Diploma / Master-Theses, Student Assistant for Research
• Experience the developer’s toolbox
– Project planning
• Read and understand literature on breaking visual CAPTCHAs
• Coordinate and cooperate with other students
– Implementation
• Develop a block in the CAPTCHA-breaking software pipeline
• Document the software
– Presentation
• Squeeze highly technical details into an easy-to-understand summary
• Demonstrate and explain the block
download full report
http://googleurl?sa=t&source=web&cd=7&ve....Intro.pdf&ei=3teSTdfGL8G9ceekrYkH&usg=AFQjCNFlnwgC2Tc-4gbg1_3oZiwDpAt3Eg&sig2=W_oQOsAVr487Lz6nbBBbPg
