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PERSONAL INCOME TAX APPLICATION FORM IMAGE AUTHENTICATION (สารนิพนธ์)

 

TITLE PERSONAL INCOME TAX APPLICATION FORM IMAGE AUTHENTICATION (สารนิพนธ์)
AUTHOR WICHAYA SUTHEEPUTTHIPONG
DEGREE MASTER OF SCIENCE PROGRAMME IN COMPUTER SCIENCE
FACULTY FACULTY OF SCIENCE
ADVISOR DAMRAS WONGSAWANG
CO-ADVISOR SUKANYA PHONGSUPHAP
 
ABSTRACT
Personal Income Tax Application Form Image Authentication (PITA) was developed for maintaining the integrity of taxpayer information that was stored as a scanned image. In this research project, the Message Authentication Code (MAC) technique was selected for authentication. Besides this, we also applied a technique of watermarking to hide MAC so that it could be embedded in the host image without degrading the perceptual quality of the host images. It should be sensitive to any modification. The combination of the two techniques is known as authentication watermarking. We devised algorithms in order to compute MAC and the way to embed MAC into PIT application form images. We also developed the prototype and measured the accuracy of the PITA system by using two types of PIT application form images. Many cases of PIT images that were expected to be found in actual situations were tested. They included the enhancement of images, skewed images, displaced images, random modified images, deliberately modified images. From experimentation, we received an authentication accuracy ranging from 67.5% to 100% correctness. The results of this research suggest that PITA may be useful in real applications.
KEYWORD IMAGE AUTHENTICATION/ AUTHENTICATION/ MAC/ WATERMARK

 

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