Abtfl'l2ct-This paper d~scribts In approacb to two-dimensional ob­ jKt r~co,nition. Complu.·lo, conformal mappin, is combin~d witb I distributed associati"e memory to creat~ a system which rKOenilts ob· jccu relardlrss of chan,es in rotation or scalt. Recalled information rrom tbe m~moriud database is \lS~d to classify In obj~ct. nconstruct tbe memoriud ","ion of the objKt. and estimatt tbe ma,...

We consider the problem of nding a known two-dimensional object in an image, or verifying that it does not appear in the image. We adopt the strategy of doing a fast scan for potential places in the image where the object could be; we call this scan pose proposal. Each pose hypothesis is a set of edges that correspond to a subset of the transformed object boundary. Our algorithm works by nding ...

We here describe a view-based system for the pose-independent representation of objects without making reference to 3-D models. Input to the system is a collection of pictures covering the viewing sphere with no pose information being provided. We merge pictures into a continuous pose-parameterized coverage of the viewing sphere. This can serve as a basis for pose-independent recognition and fo...

This thesis addresses extraction and tracking of video objects for object-based representation and manipulations of synthetic and natural digital video. Object-based video representation has gained a signi cant momentum by recent developments in multimedia computing, and has emerged as a major area of research. Many multimedia applications, such as bit-stream editing, interactive TV, and digita...

Estimating the pose (three-dimensional orientation) of objects is an important aspect of 3-D shape perception. We studied the ability of observers to match the pose of the principal axes of an object with the pose of a cross consisting of three perpendicular axes. For objects, we used a long and a flat spheroid and eight symmetric objects with aspect ratios of dimensions of approximately 4:2:1....