公开(公告)号：US20150003736A1

公开(公告)日：2015-01-01

申请号：US14158925

申请日：2014-01-20

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung Min CHOI ,  Jae-Chan JEONG ,  JAE IL CHO ,  Dae Hwan HWANG

IPC: G06K9/62 ,  G06T5/00

CPC classification number: G06K9/6217 ,  G06T7/521 ,  G06T7/593 ,  G06T2207/30204

Abstract: An apparatus includes a noise removal block for removing image noise mixed with an input image, a Modified Census Transform (MCT) block for transforming the input image from which the image noise has been removed into a current MCT coefficient, a candidate pattern extraction block for calculating a Sum of Hamming Distance (SHD) value between a current pattern window of the transformed current MCT coefficient and a reference pattern window of a previously registered template image by performing SHD calculation on the two pattern windows and extracting a candidate pattern, and a pattern detection block for scaling down the input image in a predetermined ratio when all pixels of the current scale are processed and detecting a candidate pattern having a minimum SHD value, of stored candidate patterns, as a representative pattern.

Abstract translation: 一种装置，包括用于去除与输入图像混合的图像噪声的噪声去除块，用于将从其中去除图像噪声的输入图像变换为当前MCT系数的修改人口普查变换（MCT）块;候选模式提取块， 通过在两个图案窗口上执行SHD计算并提取候选图案，计算经变换的当前MCT系数的当前图案窗口和先前登记的模板图像的参考图案窗口之间的汉明距离（SHD）值之和，并提取图案 检测块，用于当处理当前刻度的所有像素并且检测存储的候选图案的具有最小SHD值的候选图案时，以预定比例缩小输入图像作为代表图案。