Design of optimal gaussian operators in small neighbourhoods

摘要

The paper studies the principles underlying the design of Gaussian operators in small neighbourhoods and obtains criteria for their optimization. Essentially, masks can be designed either to optimize overall accuracy or to maximize isotropy. It appears that certain well known masks are relatively inaccurate and anisotropic; new 3 × 3 and 5 × 5 masks are designed which are optimal in these respects.