This paper introduces a new leaderless Byzantine consensus called the Democratic
Byzantine Fault Tolerance (DBFT) for blockchains. While most blockchain consensus …

Consider selecting points on a contour in the xy plane. In shape analysis, this is frequently
referred to as contour sampling. It is important to select the points such that they effectively …

In this paper we introduce a shape descriptor known as Self Similar Affine Invariant (SSAI)
descriptor for shape retrieval. The SSAI descriptor is based on the property that two sets of …

Shape matching with local descriptors is an underlying scheme in shape analysis. We can
visually confirm the matching results and also assess them for shape classification …

The full Procrustes distance between the configuration matrices of landmarks is the most
fundamental landmark-based distance in shape analysis. To summarize, it is obtained by …

Although there are several effective methods for placing sample points on contours drawn
with a certain stroke order and number, little attention has been paid to methods for placing …

Motivated by the increased consideration of probability distributions as local descriptors of
shape, we propose a local descriptor based on a bivariate circular distribution. Although …

The distance set is known to be a versatile local descriptor of shape. As this is simply a set of
ordinary distances between sample points on a shape, it is easy to construct and use. More …

Regarding shape matching, we present a novel method of determining a correspondence
between shapes that is applicable to existing local descriptors and somewhat enhances …

Law enforcement is interested in exploiting tattoos as an information source to identify, track
and prevent gang-related activities. In this thesis we examine several aspects of tattoo …