BACKGROUND Radial movement of the arterial wall is a well-known indicator of the mechanical properties of arteries in arterial disease examinations. In the present study, two different motion estimation methods, based on the block-matching and maximum-gradient algorithms, were examined to extract the radial displacement of the carotid artery wall. METHODS Each program was separately implement...

Binary block matching algorithm employs one-bit transform (1BT) to transform video sequences from full resolution representation (8-bit/pixel in general) to 1-bit/pixel bit-plane, then performs block matching motion estimation in bit-plane to save computations. Unfortunately, current 1BT algorithms either have bad output motion vectors or are computational intensive. In this paper, a novel fast...

The key to high performance in image sequence coding lies in an efficient reduction of the temporal redundancies. For this purpose, motion estimation and compensation techniques have been suc­ cessfully applied. This paper studies motion estimation algorithms in the context of first generation coding techniques commonly used in digital TV. In this framework, estimating the motion in the scene i...