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Page History: What is Digital Image Processing?
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Page Revision: 2010/08/25 10:49
Image (영상)
- 2차원 함수 f(x,y)로 정의
- x, y: 평면 좌표
- f: (x,y)점의 intensity, gray level
Digital image
- x, y, f가 finite, discrete quantity
- 유한 개의 위치와 값을 가짐
- Picture element, image element, pel, pixel
Digital image processing
- Digital computer에 의한 digital image의 처리
인간의 시각
- 인식에서 가장 중요한 역할
- 전자기 스펙트럼의 가시광선 영역에 한정
기계 시각
- 거의 모든 전자기 스펙트럼을 포함
- Gamma선, 자외선, 가시광선, 적외선, radio wave
- Source: 초음파, 전자현미경, computer-generated image
Image processing, computer vision의 경계?
- Low level processing: 입력과 출력이 모두 image
- Mid level processing: segmentation, description of object, classification of objects
- High level processing: make sense
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