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Focus controlled image coding based on angular and depth perception
Linköping University, Department of Electrical Engineering.
2003 (English)Independent thesis Basic level (professional degree)Student thesisAlternative title
Fokusstyrd bildkodning baserad på vinkel och djup perception (Swedish)
Abstract [en]

In normal image coding the image quality is the same in all parts of the image. When it is known where in the image a single viewer is focusing it is possible to lower the image quality in other parts of the image without lowering the perceived image quality. This master's thesis introduces a coding scheme based on depth perception where the quality of the parts of the image that correspond to out-of-focus scene objects is lowered to obtain data reduction. To obtain further data reduction the method is combined with angular perception coding where the quality is lowered in parts of the image corresponding to the peripheral visual field. It is concluded that depth perception coding can be done without lowering the perceived image quality and that the coding gain increases as the two methods are combined.

Place, publisher, year, edition, pages
Institutionen för systemteknik , 2003. , 40 p.
LiTH-ISY-Ex, 3410
Keyword [en]
Technology, Image coding, Focus control, Angular percetion, Depth perception, DCT transform
Keyword [sv]
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-2014OAI: diva2:19342
Available from: 2003-10-24 Created: 2003-10-24

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Department of Electrical Engineering
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