A Descent Conjugate Gradient Algorithm for Optimization Problems and Its Applications in Image Restoration and Compression Sensing

Algorithm 1

Three-term conjugate gradient algorithm.

	Initial step: given any initial point and positive constants , , set and .
	Step 1: stop if is true.
	Step 2: find such that
	where satisfying the equation in Step 2 mentioned in Algorithm 1.
	Step 3: set .
	Step 4: stop if holds.
	Step 5: compute by (11).
	Step 6: set and go to Step 2.