Figure 2: Image alignment.
From: Real-time micro-scale temperature imaging at low cost based on fluorescent intensity ratio
(a,b) Two recorded original images of fluorescent material layer deposited on the copper block, with feature points and matching result (only showing 3 matches for clarity). The crosses in two images, connected by green lines, show the matching result, while coordinates of blue circles in the right image are the same as those of red crosses in the left one. (c,d) Two images after transformation, only blue circles with the same coordinates of red crosses in the left image are shown in the right one. The black region in the right image originates from the data loss caused by the transformation.
