Welcome to the Computer Vision and Multimedia Lab website.
GET IN TOUCH
Digital Anastylosis of Frescoes challeNgE (DAFNE)
Dataset ANASTYLOSIS DB1 and ANASTYLOSIS DB2
Dataset characteristics. The dataset provided (ANASTYLOSIS DB1 for development and ANASTYLOSIS DB2 for testing) will be available to registered participants on different specified dates. Their use is restricted to the fulfilment of the challenge’s objectives and related papers publication. The dataset for the development phase includes, for each fresco, a set of fragments and the expected reconstructed image, while the dataset for the testing phase includes, for each fresco, a set of fragments but does not provide the corresponding reconstructed image.
The datasets are designed to be realistic, natural and challenging for cultural heritage domains in terms of their resolution, diversity in scenes, and pictorial assets. The fragments are obtained from each fresco through a random plane tessellation with suitable statistics (uniform or with a few clusters as shown in the Annex), with an erosion process applied to each fragment.
The datasets' distinguishing characteristics are quantized by the following five basic parameters:
• A: number of fragments
• B: type of random distribution
• C: percentage of missing fragments
• D: percentage of spurious fragments
• E: average ratio between the fragment area after the erosion and the original area in the fresco plane tessellation.
Acknowledgements. The dataset collection is supported by the Challenge Committee. Any opinions, findings and conclusions or recommendations expressed in the datasets are those of the organizers and do not necessarily reflect the views of the sponsors.
Citation Information. If you make use of the datasets provided for this challenge, please use the citation for the ICIAP conference and the dedicated “Virtual Special Issue” of Pattern Recognition Letters.
Dataset downloads
• Please download DAFNE ANASTYLOSIS DB1 dataset for the development phase (available from February 27, 2019). User and password are written in the Confirmation message page returned after Registration.
The use of DAFNE ANASTYLOSIS DB1 dataset is restricted to the fulfilment of the challenge’s objectives and related papers publication.
For each fresco you will find: an image of the original fresco and 18 folders, each one containing a set of fragments - randomly generated - to be reassembled, eventually mixed with spurious elements (PNG files in the folder frag_eroded - each file is a fragment), a list of the co-ordinates of the exact location and orientation of the fragments correctly placed in the reconstructed image (fragments.txt), a list of the spurious fragments (fragments_s.txt), the parameters used for the simulated fresco fragmentation (parameters.txt), and the solution consisting in the image of the original fresco with a grey background, with overlapping coloured fragments (rebuilt_image.png).
• Please download DAFNE ANASTYLOSIS DB2 dataset for the testing phase (available from June 3, 2019)
Support and contact
For any questions, please contact: daf-challenge-group@unipv.it
Copyright
The images are provided for non-profit purposes and their use is restricted to DAFNE registered participants for the fulfilment of the challenge’s objectives. Despite every effort to contact copyright-holders, the organizers should be contacted as regards any omissions or errors.
