Optical Ow Applied to Person Identiication Optical Ow Applied to Person Identiication
نویسندگان
چکیده
We propose to compute a vector eld, similar to the optical ow computed between successive frames of an image sequence, which maps optimally (in a certain sense) one face image onto another face image. A cost of the mapping is computed and used to quantify the dissimilarity between the two images. The technique is applied to the problem of person identiication by comparing an input face image to all face images prestored in a database. The method was implemented on the Connection Machine CM-5 of the University of Groningen 1 in the data-parallel programming model.
منابع مشابه
Person Tracking by Integrating Optical Flow and Uniform Brightness Regions
This paper describes a method to track a person by integrating two cues: optical ow and uniform brightness regions, where optical ow cannot be obtained. This method works even if tracking with either optical ow or uniform brightness regions may fail. The proposed method is implemented on a realtime image processor with multiple DSPs and successfully tracked a target person using a real image se...
متن کاملConceiving Computationally
I present some of the research activities of my group in Vision as a Grand Challenge problem whose solution is estimated to need the power of TTop/s computers. Visual information representations which are motivated by the function of the primary visual cortex are computed. In the case of simple objects such as convex polygons, these representations allow straightforward interpretation for objec...
متن کاملTracking a Person with 3-D Motion by Integrating Optical Flow and Depth
This paper describes a method of tracking a person with 3-D translation and rotation by integrating optical ow and depth. The target region is rst extracted based on the probability of each pixel belonging to the target person. The target state (3-D position, posture, motion) is estimated based on the shape and the position of the target region in addition to optical ow and depth. Multiple targ...
متن کاملEstimation of Residence Time in Con - Tinuous Flow Systems with Dynamicst
A method for estimation of residence time in continuous ow systems with varying dynamics is presented. By resampling, i.e., choosing time instants diierent from the given sampling instants, and interpolation between measured data points, a continuous ow system with constant residence time expressed in the new resampled time vector is obtained. It is assumed that the ow patterns in the systems a...
متن کاملA Scalar Function Formulation for Optical Flow
In this work, we present results from a new formulation for determining image velocities from a time-sequence of X-ray projection images of owing uid. Starting with the conservation of mass principle, and physics of X-ray projection, we derive a motion constraint equation for projection imaging, a practical special case of which is shown to be the Horn and Schunck's optical ow constraint. We ar...
متن کامل