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watershed algorithm 1

[ ์˜๋ฃŒ์˜์ƒ ] Medical Image Segmentation (3.Region Growing / Watershed Algorithm)

MOOC ๊ฐ•์ขŒ '์ปดํ“จํ„ฐ๋น„์ „, ๋จธ์‹ ๋Ÿฌ๋‹, ๋”ฅ๋Ÿฌ๋‹์„ ์ด์šฉํ•œ ์˜๋ฃŒ์˜์ƒ๋ถ„์„' ๊ฐ•์˜๋ฅผ ๋ฆฌ๋ทฐ ๋ฐ ์ •๋ฆฌํ•œ ๊ฒŒ์‹œ๋ฌผ์ž…๋‹ˆ๋‹ค. Region Growing ์™ผ์ชฝ ์‚ฌ์ง„์€ Thresholding Method์˜ ๊ฒฐ๊ณผ๋ฌผ์ด๊ณ , ์˜ค๋ฅธ์ชฝ ์‚ฌ์ง„์€ ํ•ด๋‹น ์‚ฌ์ง„์— Morphological Processing์„ ์ง„ํ–‰ํ•œ ๊ฒฐ๊ณผ๋ฌผ์ด๋‹ค. Noise์™€ Hole์ด ์ œ๊ฑฐ๋˜์—ˆ์Œ์„ ํ™•์ธํ•  ์ˆ˜ ์žˆ๋‹ค. (๋งˆํฌ์—…์œผ๋กœ ์น ํ•œ ์‚ฌ์ง„์ด๋‹ค. ์‹ค์ œ๋กœ ํ•ด๋‹น ํ”„๋กœ์„ธ์‹ฑ ์ง„ํ–‰ํ•œ ์‚ฌ์ง„ ์•„๋‹ˆ๋‹ค,,) ํ•ด๋‹น ์ด๋ฏธ์ง€๋ฅผ ์ธํ’‹์œผ๋กœ ํ•˜์—ฌ ์‚ฌ์šฉ์ž ์ž…๋ ฅ ์ง€์ ์„ ๋ฐ›์œผ๋ฉด ํ•ด๋‹น ์ง€์ ์œผ๋กœ๋ถ€ํ„ฐ ํผ์ ธ๋‚˜๊ฐ€๋ฉด์„œ ํ”ฝ์…€๊ฐ’์ด 255๊ฐ€ ์•„๋‹Œ ์ง€์ ๊นŒ์ง€ ๊ทธ ์˜์—ญ์„ ๋„“ํžŒ๋‹ค. Region Growing์— ํ•ด๋‹นํ•˜๋Š” ๋ถ€๋ถ„๋งŒ Labeling ๋˜์–ด ์›ํ•˜๋Š” ๋ถ€๋ถ„๋งŒ Segmentation ์ด ์ง„ํ–‰๋œ Binary Map์„ ์–ป์„ ์ˆ˜ ์žˆ๋‹ค. Bi..

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