Sub-band coding of hexagonal images
作者：
Highlights：
• Tree-based hexagonal wavelet sub-band coding scheme for hexagonally sampled images.
• Spiral wavelet tree rearrangement that preserves spatial coherence of coefficients.
• Traversal scheme and parent-to-children relationships that respect hexagonal geometry.
• Compressed files that are upto 2.5 times smaller compared to similar Cartesian schemes.
• Improved quality at low bit rates compared to similar Cartesian schemes.
摘要
•Tree-based hexagonal wavelet sub-band coding scheme for hexagonally sampled images.•Spiral wavelet tree rearrangement that preserves spatial coherence of coefficients.•Traversal scheme and parent-to-children relationships that respect hexagonal geometry.•Compressed files that are upto 2.5 times smaller compared to similar Cartesian schemes.•Improved quality at low bit rates compared to similar Cartesian schemes.
论文关键词：Hexagonal image processing,Multiresolution analysis,Sub-band coding,Tree-based wavelet compression
论文评审过程：Received 1 February 2021, Revised 7 September 2021, Accepted 9 September 2021, Available online 20 September 2021, Version of Record 6 October 2021.
论文官网地址：https://doi.org/10.1016/j.image.2021.116494
