This work presents a novel hardware/software codesign approach to blob detection. Camera images are preprocessed on a field-programmable gate array that separates foreground pixels from the background. The foreground pixels are transferred to the PC over a 100 Mbit/s Ethernet interface by using a custom protocol. The PC reconstructs the images from received foreground pixels and extracts center...

Propagating filaments of enhanced plasma density, or blobs, observed in 3D numerical simulations of a diverted, neutral-fueled tokamak are studied. Fluctuations of vorticity, electrical potential phi, temperature Te, and current density J parallel associated with the blobs have a dipole structure perpendicular to the magnetic field and propagate radially with large E x B drift velocities (>1 km...

We determine the structure of two variations on the Temperley-Lieb algebra, both used for dealing with special kinds of boundary conditions in statistical mechanics models. The first is a new algebra, the ‘blob’ algebra (the reason for the name will become obvious shortly!). We determine both the generic and all the exceptional structures for this two parameter algebra. The second is the period...

Résumé. Cet article présente une nouvelle approche qui permet de compter le nombre d’individus franchissant une ligne de comptage . L’approche proposée accumule dans le temps les vecteurs de mouvement pour chaque point de la ligne de comptage formant une carte spatiotemporelle. Une procédure de détection en ligne des blobs est ensuite utilisée afin de déterminer les régions de la carte spatiote...

It has been argued that blobs ejected from advection-dominated accretion flow through the accretion-ejection instability undergo expansion due to their high internal energy density. The expanding blobs interact with their surroundings and form strong shock, which accelerates a group of electrons to be relativistic. Then flares are formed. This model has advances in two aspects: shock accelerati...

This report proposes a concept for SE(3)-equivariant non-linear filters for multiple purposes, especially in the context of feature and object detection. The idea of the approach is to compute local descriptors as projections onto a local harmonic basis. These descriptors are mapped in a non-linear way onto new local harmonic representations, which then contribute to the filter output in a line...

Application designers must decide whether to store large objects (BLOBs) in a filesystem or in a database. Generally, this decision is based on factors such as application simplicity or manageability. Often, system performance affects these factors. Folklore tells us that databases efficiently handle large numbers of small objects, while filesystems are more efficient for large objects. Where i...

The mechanism for blob generation in a toroidal magnetized plasma is investigated using time-resolved measurements of two-dimensional structures of electron density, temperature, and plasma potential. The blobs are observed to form from a radially elongated structure that is sheared off by the E x B flow. The structure is generated by an interchange wave that increases in amplitude and extends ...