방법 비교

	히스토그램 평활화	윤곽선 분석	영상 형태학 연산
분야	컴퓨터 비전	컴퓨터 비전	컴퓨터 비전
계열	Machine learning	Machine learning	Machine learning
기원 연도	1970s	1985	1982
창시자	Signal processing community	Satoshi Suzuki and Keiichi Abe	Jean Serra
유형	Contrast enhancement and preprocessing	Shape and contour analysis	Set theory and topological image processing
원전	Gonzalez, R. C., & Woods, R. E. (1992). Digital Image Processing. Addison-Wesley, 2nd edition, Chapter 3.	Suzuki, S., & Abe, K. (1985). Topological structural analysis of digitized binary images by border following. Computer Vision, Graphics, and Image Processing, 30(1), 32–46.	Serra, J. (1982). Image Analysis and Mathematical Morphology. Academic Press.
별칭	Histogram stretching, Contrast enhancement	Edge-based contours, Boundary analysis	Mathematical morphology, Morphological filtering
관련	5	5	5
요약	Histogram equalization is an image preprocessing technique that redistributes pixel intensities to improve contrast and visibility of details. By spreading the histogram of pixel values evenly across the available range, histogram equalization enhances images with poor contrast, making features more visually distinct and easier to process algorithmically.	Contour analysis is the process of detecting and analyzing the boundaries of objects in images by identifying connected edges and extracting shape information. The Suzuki-Abe algorithm provides an efficient method for finding contours in binary images, enabling shape-based object classification and segmentation.	Morphological image processing, introduced by Jean Serra in 1982, is a technique based on set theory that reshapes and analyzes image regions using geometric structuring elements. Core operations include erosion and dilation, which can be combined into more complex operations like opening and closing, enabling noise removal, edge detection, and object analysis.