A Deformation Method for Shoe Last Customization

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Abstract
The production of custom tailored product is widely required in the manufacturing industry nowadays. This paper proposes a new method for designing custom shoe last. In this method, a consumer preferred last form is selected as the base form. By calculating the difference between the base form and scanned foot data from the consumer, a distance map is obtained to indicate how well the selected shoe last fits the specific foot shape and to guide the deformation. An amendment map is set up offline based on the experience information from experienced last maker to cater for last design regulations; it can also incorporate the function of preserving original last style by keeping the original last shape on specific regions such as ‘toe cap’. The base last form is then deformed by minimizing the SSD of a designed equation, to fit the particular foot shape according to the distance map and amendment map, with the minimal change of the original last style. Preliminary experimental results are given to demonstrate the operation of the proposed method.