Table 2. Summary of compression time comparison on CPU.

Our method was compared with other learning-based codecs on the dataset using CPU. Performance was measured in average encoding time per image (SPP). The best performance was highlighted in bold, the second best performance was indicated with an asterisk (*).

Method	COVID-19 RADIOGRAPHY	Lung CT	Head CT	Lumbar Spine CT	COCO
L3C	1.27 +39.3%	2.30 +35.2%	3.43 +50.7%	3.46 +41.3%	3.51 +36.8%
LC-FDNet	0.947* +18.6%	1.74* +14.4%	2.14* +21.0%	2.63* +22.8%	2.89* +23.2%
Our	0.771	1.49	1.69	2.03	2.22