Introduction - If you have any usage issues, please Google them yourself
Reconstruction graph of full search algorithm. As the name implies, the exhaustive method is to calculate and compare each position within the search range, and find the most similar (least error) position with the block to be matched from the original image block. For an area with a search range of [- 7,7], 15x15 = 225 calculations are required for searching both directions X and Y once. The disadvantage of exhaustive method is that the calculation is too large and the speed is very slow. On the other hand, the matching accuracy is the highest because all the ranges are calculated.