Design and visual evaluation of digital filters for enlargement and reduction of images
- Resource Type
- Authors
- A. Nishihara; J. Murakawa
- Source
- IEEE APCCAS 2000. 2000 IEEE Asia-Pacific Conference on Circuits and Systems. Electronic Communication Systems. (Cat. No.00EX394).
- Subject
- Half-band filter
business.industry
ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
Reconstruction filter
Composite image filter
Adaptive filter
Filter design
Filter (video)
Prototype filter
Computer vision
Artificial intelligence
business
Digital filter
Mathematics
- Language
Linear-phase FIR digital filter responses used in resizing of images are investigated and evaluated both objectively and subjectively. Blur, jaggy and ringing are the main artifacts which deteriorate image quality. A new type of filter response which incorporates characteristics of human visual systems and statistical property of images are found to show good visual quality even with lower filter order, which was supported by objective and subjective evaluation of images.