公开(公告)号：US09842273B2

公开(公告)日：2017-12-12

申请号：US15064800

申请日：2016-03-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yong Ju Cho ,  Unsang Park ,  Joo Myoung Seok ,  Sang Woo Ahn ,  Ji Hun Cha

IPC: G06K9/46

CPC classification number: G06K9/4671

Abstract: Provided is an apparatus and method for detecting a key point using a high-order Laplacian of Gaussian (LoG) kernel. The high-order LoG kernel is generated based on an LoG operator which is calculated by sequentially differentiating an LoG operator with respect to x and y of an image. A scale space is generated based on the high-order LoG kernel and the key point is detected by comparing a current pixel in the scale space to pixels adjacent to the current pixel.