Pansharpening with the Multidirection Tree Ridgelet Dictionary

Algorithm 1

Pansharpening with multidirection tree ridgelet dictionary.

	input: the MS image and the PAN image
	output: the fused MS image
	Step1: the first principal component of the resampled and the were partitioned into blocks. Thus, we can obtain the and . represents the number of blocks.
	Step2: are classified through the measure of section 3, which are divided into smooth, irregular, or multidirection categories. Correspondingly, is marked in the same category according to the classification of .
	Step3: and are used to smooth blocks and irregular blocks, respectively. According to the angle of image block, is selected for multidirection category.
	Step4: Finally, the fused block is obtained by sparse coding. Thus, can be obtained.