We propose a motion segmentation algorithm that aims to break a scene into its most prominent moving groups. Instead of identifying point correspondences between the image frames, the idea to nd what groups of pixels are transformed from one image frame to another. To do this, we treat the image sequence as a three dimensional spatiotemporal data set and construct a weighted graph by taking eac...

We introduce a new method for colour image indexing and content-based image retrieval. An image is divided into small sub-images and the visual appearance of which is characterised by a coloured pattern appearance model. The statistics of the local visual appearance of the image are then computed as measures of the global visual appearance of the image. The visual appearance of the small sub-im...

We study the spatiotemporal structure of the biphoton entangled state generated by the four-wave mixing (FWM) process in a cold two-level atomic ensemble. We analyze, for the first time, the X-like shaped structure of the biphoton entangled state and the geometry of the biphoton correlation for different lengths and densities of the cold atomic ensemble. The propagation equations of the photon ...

The digital image correlation technique was used in situ during tensile testing to investigate the behavior of Portevin–Le Chatelier (PLC) bands a Fe–18Cr–8Ni–2.8Cu austenitic steel at temperature 680 °C. Effect strain on characteristics PLC bands, namely velocity, its intensity and distance propagated by studied. New data spatiotemporal elevated were obtained. propagate continuously along enti...