Analysis of phase feature in image edge

摘要

Thie phase feature of such commn ideal image edges as step, marrow rectangle pulse, narrow ramp and roof at their edge point is analyzed and deduced in this paper. These edges in their edge point have the properties of phase congruency and the phase are several special quadrant angles, they are 0 deg , 9 deg , 180 deg and 270 deg . The non-ideal edges in real image are also have the properties of phase congrucency if they have the same s ymmetrization as ideal edges. To edge points of wide ramp and wide pulse, it is disadvantageous to detect the exists of edge according to its complex phase feature. It need to be discussed and researched in depth the existence of edge point can be determined according the variable series of phase congruecy.