영상 이진화란 명도 영상(gray-scaled image)을 이진 영상(bi-leveled image)으로 변환하는 것을 말한다. 영상 이진화는 문서 인식, 비디오 영상 분석 등과 같이 영상처리 분야에서 많이 사용되는 기본적인 영상 처리 과정에 해당한다. 본 논문은 Intel 사의 Pentium 계열 프로세서에서 지원하는 SIMD(Single-Instruction Multiple-Data) 기술을 이용하여 영상 이진화를 고속으로 수행하는 방법을 소개한다. 우편영상에 대하여 실험한 결과, SSE2 명령어로 구현된 프로그램은 기존의 C 언어로 구현된 프로그램에 비하여 4배 이상의 속도 향상을 보였다.
KSP Keywords
Gray-scaled image, Single Instruction Multiple Data(SIMD)
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