A Siamese transformer network for zero-shot ancient coin classification

Z Guo, O Arandjelović, D Reid, Y Lei, J Büttner - Journal of Imaging, 2023 - mdpi.com
Ancient numismatics, the study of ancient coins, has in recent years become an attractive
domain for the application of computer vision and machine learning. Though rich in research …

Identification of ancient coins based on fusion of shape and local features

R Huber-Mörk, S Zambanini, M Zaharieva… - Machine vision and …, 2011 - Springer
We present a vision-based approach to ancient coins' identification. The approach is a two-
stage procedure. In the first stage an invariant shape description of the coin edge is …

Ancient coin classification using reverse motif recognition: Image-based classification of roman republican coins

H Anwar, S Zambanini, M Kampel… - IEEE Signal …, 2015 - ieeexplore.ieee.org
We propose a holistic system to classify ancient Roman Republican coins based on their
reverse-side motifs. The bag-of-visual-words (BoW) model is enriched with spatial …

Coarse-to-fine correspondence search for classifying ancient coins

S Zambanini, M Kampel - Asian Conference on Computer Vision, 2012 - Springer
In this paper, we build upon the idea of using robust dense correspondence estimation for
exemplar-based image classification and adapt it to the problem of ancient coin …

Classifying ancient coins by local feature matching and pairwise geometric consistency evaluation

S Zambanini, A Kavelar… - 2014 22nd International …, 2014 - ieeexplore.ieee.org
Classification of ancient coins is a substantial part of numismatic research which needs a
large amount of expert knowledge due to the high number of classes to be considered. In …

Automatic coin classification by image matching

S Zambanini, M Kampel - … of the 12th International conference on Virtual …, 2011 - dl.acm.org
This paper presents an automatic image-based ancient coin classification method that
adopts the recently proposed SIFT flow method in order to assess the similarity of coin …

Automatic coin classification and identification

R Huber-Mörk, M Nölle, M Rubik… - Advances in Object …, 2012 - books.google.com
We investigate object recognition and classification in a setting with a large number of
classes as well as recognition and identification of individual objects of high similarity. Real …

Ruler detection for autoscaling forensic images

A Bhalerao, G Reynolds - International Journal of Digital Crime and …, 2014 - igi-global.com
The assessment of forensic photographs often requires the calibration of the resolution of
the image so that accurate measurements can be taken of crime-scene exhibits or latent …

A rotation-invariant bag of visual words model for symbols based ancient coin classification

H Anwar, S Zambanini… - 2014 ieee international …, 2014 - ieeexplore.ieee.org
We propose to perform image-based ancient coin classification by recognizing symbols
minted on the reverse side of coins. Dense sampling based bag-of-visual-words model is …

Encoding spatial arrangements of visual words for rotation-invariant image classification

H Anwar, S Zambanini, M Kampel - German Conference on Pattern …, 2014 - Springer
Incorporating the spatial information of visual words enhances the performance of the well-
known bag-of-visual words (BoVWs) model for problems like object category recognition …