Efficient sketch recognition based on shape features and multidimensional indexing


Face sketch recognition on real forensic mug shot photo galleries is a complex task since a large amount of images needs to be matched in few seconds to produce a useful outcome. Several effective solutions for sketch-based subject identification have been recently proposed, but the cost of linear search makes them not scalable when large databases have to be scanned. In this work we propose an approach which combines the use of efficient shape features for sketch-photo matching with a suitable indexing structure based on dimensionality reduction. The proposed method provides a preliminary set of candidate photos to be used as input for the final identification based on state-of-the-art techniques, offering scalability and time efficiency without noticeably compromising recognition accuracy, as confirmed by the experimental results

Similar works

Full text


Archivio istituzionale della ricerca - Alma Mater Studiorum Università di Bologna

Last time updated on 04/09/2019

Having an issue?

Is data on this page outdated, violates copyrights or anything else? Report the problem now and we will take corresponding actions after reviewing your request.