Reduction of transients during lifting based spatial switching of two-channel filter banks
作者：
Highlights：
• Shows that transients are induced during switching between arbitrary lifting based filter banks.
• Proposes a boundary handling mechanism to switch between given filter banks.
• Proposes filter bank design method that do not induce transients.
• Develops a spatial adaptive transform (SPADDWT) by switching between long length and short length FBs.
• SPADDWT improves PSNR for bit rates up to 0.2 bpp and improves visual quality for bit rates up to 0.6 bpp over JPEG2000 9/7 FB.
摘要
Highlights•Shows that transients are induced during switching between arbitrary lifting based filter banks.•Proposes a boundary handling mechanism to switch between given filter banks.•Proposes filter bank design method that do not induce transients.•Develops a spatial adaptive transform (SPADDWT) by switching between long length and short length FBs.•SPADDWT improves PSNR for bit rates up to 0.2 bpp and improves visual quality for bit rates up to 0.6 bpp over JPEG2000 9/7 FB.
论文关键词：Wavelets,Lifting,Time-varying filter banks,Adaptive image transforms
论文评审过程：Received 13 January 2015, Revised 21 June 2016, Accepted 21 June 2016, Available online 23 June 2016, Version of Record 12 July 2016.
论文官网地址：https://doi.org/10.1016/j.image.2016.06.011
