Evaluation on diabetic plantar pressure data-set employing auto-segmentation technologies

Abstract

Plantar pressure imaging technologies play more important role in diabetics’ shoe-last design. The plantar pressure imaging data-set was acquired through pressure sensors system and was preprocessed using typical image process technologies including Gauss filtering, gamma correction, and wavelet transform enhancement in this work. To decrease the computational complexity, edge detection operator with Sobel, Roberts, Prewitt, Log and Canny were applied. Finally, threshold-based method, gray, watershed, feature clustering and fuzzy cluster, region growing-based plantar pressure image segmentation were employed, respectively. Results illustrated that threshold performs the better effectiveness by using analytic hierarchy process evaluation method through a special indices definition. The proposed methods in the research will be potential application and guidance for comfort shoe design for diabetics.