Improved Dark Channel Defogging Algorithm for Defect Detection in Underwater Structures

Table 1

The key procedure of the DR image enhancement model.

Name	Key procedure
Log function	function Layers = ComputeLayers (nrows, ncols)
	power = 2 ^ fix (log 2 (gcd (nrows, ncols)));
	While (power > 1 and ((rem (nrows, power)∼ = 0) | (rem (ncols, power) ∼ = 0)))
	power = power/2;
	end