id	keyword
cana-4744	image
cana-4744	compression
cana-4744	method
cana-4744	lzw
cana-4744	ratio
cana-4744	vol
cana-4744	value
cana-4744	algorithm
cana-4744	dictionary
cana-4744	huffman
cana-4744	analysis
cana-4744	function