Figure 1From: An efficient approach for robust multimodal retinal image registration based on UR-SIFT features and PIIFD descriptors Distribution of features for the Harris corner detector in a color image. Corner points (i.e., red plus signs) are detected on non-vascular or pathological areas. This degrades feature matching performance due to non-repeatable locations in the second image in spite of vessels which are depicted in all modalities.Back to article page