현재, 컨베이어 벨트시스템에 소포를 직재하고, 우편번호를 운영자가 입력하여 구분한다. 구분된 소포 중에서 기록관리 대상의 경우에는 바코드를 판독하여 처리하고 있다. 이에 따라, 본 논문에서는 2m/sec 이내로 이송되는 소포를 라인 CCD(Charged Coupled Device) 카메라에 의해 이미지 획득한 후, 바코드 ROI 추출 방법을 위해 $32{\times}32$ 미세블룩 검사 방법을 적용하였다. ROI 추출 절차는 최대-최소 차이값과 동적 인계값 기준으로 바탕면 제거, 문자열과 바코드 영역을 판단하기 위한 대각선(diagonal) 검사방법 적용, 바코드 영역인지 검증하기 위해 수평으로 5 라인을 검사하고 에지의 수와 폭의 변화량 비교 등의 과정으로 수행하였다. 그리고 바코드 ROI 추출은 레이블링 과정에 의해 바코드 영역의 보정과 그룹크기 비교에 의한 ROI 영역의 구체화와 정보 해석을 위하여 ROI 외곽좌표 8개중에서 가장 간 중심축 라인으로 생성하는 방법 등을 적용하였다. ROI 추출과 중심축 시험결과에 의하면 $50{\sim}180msec$이내에 가능하게 되었다. 그리고, ROI 추출의 정확도는 99.994% 이상을 만족한다.
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