A multiresolution approach for estimation of component velocity

"Komponent-hastighet" blir benyttet for å beregne bevegelsesfelt i bi ldesekvenser. I dette arbeidet blir det foreslått en metode for bereg ning av "komponent-hastighet" basert på fler-oppløsnings-teknikker (m ultiresolution). Bevegelse finnes fra retnings-egenskaper i rom-tid-s nitt-bilder. Kompensasjon og nedsampling blir benyttet for å kunne es timere fart innen et stort variasjonsområde. Component velocities are used to compute the full velocity field (opt ical flow). In this work we suggest an approach using a multiresoluti on scheme for estimation of velocities. The motion information is fou nd from directional properties of 2D space-time slices from the image sequence. A simple approach based on directional variances is sugges ted for estimation of direction. With this method it is possible to e stimate a large range of different speeds by using compensation and d ecimation. The available accuracy can be chosen from the number of le vels the space-time slice is decimated.