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EURASIP Journal on Image and Video Processing
Figure 8 | EURASIP Journal on Image and Video Processing

Figure 8

From: An efficient approach for robust multimodal retinal image registration based on UR-SIFT features and PIIFD descriptors

Figure 8

Eight image pairs in a scale invariance test. The scale factors of images are 1.5, 1.5, 2.5, 2.5, 2.5, 1.5, 1.5, and 1.5 from the top to bottom row, respectively. The registration results are shown in the third column. The Harris-PIIFD failed to register these images. The color and late phase of FA images in the first row of (a) exhibit exudative age-related macular degeneration in a 32-year-old patient. The second row of (a) shows a venous phase of an FA sequence before and after laser treatment in a retina with hypertonia. The other rows of (a) and (b) display unhealthy retinas with severe pathologies in the background or macular region, which lead to vision loss.

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