New method for Increasing watermarked image quality and security
الباحث الأول:
Rana J.S. Al-janabi
الباحثين الآخرين:
Shroouq J.S. Al-janabi
Zinah Hussein Toman
المجلة:
Journal of AL-Qadisiyah for computer science and mathematics
تاريخ النشر:
None
مختصر البحث:
Recently, information transmission is done electronically, information can be stored and
manipulated easily using computer, information transferring should be done in secure way. Watermark is a
technique that can be used to secure data.
In this p…
Recently, information transmission is done electronically, information can be stored and
manipulated easily using computer, information transferring should be done in secure way. Watermark is a
technique that can be used to secure data.
In this paper, a new watermark algorithm is proposed which depends on integer wavelet transform,
arithmetic encoding and adaptive run length encoding. Adaptive run length encoding is used to compress
watermark before embedding process. Arithmetic encoding can be used to compress data in original image
that are needed to be retrieved from watermarked images to recover original image without any differences
after watermark extraction process.
To avoid the problem of traditional Run Length Encoding Technique that may produce file that is
larger than original one. Adaptive run length encoding is suggested which is used to compress watermark in
cover image. The adaptive compression technique can be done several times on watermark using different
number of bits to represent counts of runs and produce several vectors for number of runs, compare several
results and select smallest vector from them. Surely, the smallest vector means that watermarked image will
be high quality image; capacity will be better and adaptively ensure embedding process will be more secure.
