{"id":34120,"date":"2026-03-12T09:02:23","date_gmt":"2026-03-12T00:02:23","guid":{"rendered":"https:\/\/blog.agentsoft.co.kr\/index.php\/2026\/03\/12\/34120\/"},"modified":"2026-03-12T09:02:23","modified_gmt":"2026-03-12T00:02:23","slug":"%ea%b4%91%ed%95%99%ec%8b%a4%ed%97%98spatial-frequency-filtering%ea%b3%b5%ea%b0%84%ec%a3%bc%ed%8c%8c%ec%88%98","status":"publish","type":"post","link":"https:\/\/blog.agentsoft.co.kr\/index.php\/2026\/03\/12\/34120\/","title":{"rendered":"[\uad11\ud559\uc2e4\ud5d8]Spatial Frequency Filtering(\uacf5\uac04\uc8fc\ud30c\uc218)"},"content":{"rendered":"

<\/p>\n

\ubaa9\ucc28<\/strong><\/p>\n

1. \uc2e4\ud5d8 \uc774\ub860 \ubc0f \uc6d0\ub9ac
\n2. \uc2e4\ud5d8 \ubc29\ubc95
\n3. \uc2e4\ud5d8 \uacb0\uacfc
\n4. \ucc38\uace0 \ubb38\ud5cc<\/p>\n

\ubcf8\ubb38\ub0b4\uc6a9<\/strong><\/p>\n

\uac00. \uacf5\uac04 \uc8fc\ud30c\uc218
\n\uacf5\uac04 \uc8fc\ud30c\uc218\ub780 \uc5b4\ub5a0\ud55c \ud328\ud134\uc758 \ubaa8\uc591\uc774 \ub2e8\uc704 \uae38\uc774\ub2f9 \uc5bc\ub9c8\ub098 \ub9ce\uc774 \ubc18\ubcf5 \ub418\ub294\uac00\ub97c \ub098\ud0c0\ub0b4\ub294 \uc218\uc774\ub2e4. \uc77c\ubc18\uc801\uc778 \uc8fc\ud30c\uc218\ub97c F=1\/T (T : \uc2dc\uac04\uc8fc\uae30) \ub85c\uc11c \ub2e8\uc704\ub97c \ub77c\uace0 \ud55c\ub2e4\uba74 \uacf5\uac04 \uc8fc\ud30c\uc218 F’=1\/\u03bb (\u03bb : \uacf5\uac04\uc8fc\uae30) \ub85c \ub098\ud0c0\ub0bc \uc218 \uc788\uc73c\uba70, \ub85c \ub098\ud0c0\ub0bc \uc218 \uc788\ub2e4. \uc5ec\uae30\uc5d0\uc11c \uc784\uc758\uc758 \uc0c1\uc744 \uacf5\uac04\uc88c\ud45c \ud3c9\uba74\uc5d0\uc11c \uacf5\uac04\uc8fc\ud30c\uc218 \ud3c9\uba74\uc73c\ub85c \ubc14\uafb8\uc5b4 \uc8fc\ub294 \uac83\uc744 Fourier Transform\uc774\ub77c \ud558\uace0, \uc5ed\uc73c\ub85c \uacf5\uac04\uc8fc\ud30c\uc218 \ud3c9\uba74\uc5d0\uc11c \uacf5\uac04\uc88c\ud45c\ub85c \ubc14\uafb8\uc5b4 \uc8fc\ub294 \uac83\uc744 Inverse Fourier Transform\uc774\ub77c \ud55c\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \uc5b4\ub5a0\ud55c \ubb3c\uccb4\uc758 \uc0c1\uc774 \ub80c\uc988\ub97c \uc9c0\ub098\uba74\uc11c Fourier Transform \uc774 \uc77c\uc5b4\ub098\uba70, \uadf8 \uc774\ubbf8\uc9c0\uac00 \ub2e4\uc2dc \uac19\uc740 \ub80c\uc988\ub97c \ud55c\ubc88 \ub354 \uac70\uce58\uba74 Inverse Fourier Transform\uc774 \uc77c\uc5b4\ub098 \uc6d0\ub798\uc758 \uc0c1\uacfc \uac19\uc740 \ud615\ud0dc\ub97c \uac00\uc9c4 \uc0c1\uc744 \ubcfc \uc218 \uc788\uac8c \ub41c\ub2e4.<\/p>\n

\ub098. Fourier Transform
\nFourier transform\uc740 \uc8fc\uae30\uc801\uc778 \uc2dc\uac04 \ud568\uc218\ub3c4 \uc8fc\ud30c\uc218 0\ubd80\ud130 \uc2dc\uc791\ud558\uc5ec Base frequency(f)\uc758 \uc815\uc218 \ubc30\uc5d0 \ud574\ub2f9\ud558\ub294 \uc8fc\ud30c\uc218\ub85c \uc774\ub8e8\uc5b4\uc9c4 sin\uacfc cos\ud568\uc218\uc758 \ubb34\ud55c \ud569\uacfc \uac19\ub2e4\ub294 \uac1c\ub150\uc5d0\uc11c\ubd80\ud130 \ucd9c\ubc1c\ud55c\ub2e4. \uc8fc\uae30\uc801\uc778 \uc2dc\uac04 \ud568\uc218\uc758 fourier series\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ud615\ud0dc\ub85c \ub098\ud0c0\ub09c\ub2e4.<\/p>\n

\ucd9c\ucc98 : \ud574\ud53c\ucea0\ud37c\uc2a4<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

\ubaa9\ucc28 1. \uc2e4\ud5d8 \uc774\ub860 \ubc0f \uc6d0\ub9ac 2. \uc2e4\ud5d8 \ubc29\ubc95 3. \uc2e4\ud5d8 \uacb0\uacfc 4. \ucc38\uace0 \ubb38\ud5cc \ubcf8\ubb38\ub0b4\uc6a9 \uac00. \uacf5\uac04 \uc8fc\ud30c\uc218 \uacf5\uac04 \uc8fc\ud30c\uc218\ub780 \uc5b4\ub5a0\ud55c \ud328\ud134\uc758 \ubaa8\uc591\uc774 \ub2e8\uc704 \uae38\uc774\ub2f9 \uc5bc\ub9c8\ub098 \ub9ce\uc774 \ubc18\ubcf5 \ub418\ub294\uac00\ub97c \ub098\ud0c0\ub0b4\ub294 \uc218\uc774\ub2e4. \uc77c\ubc18\uc801\uc778 \uc8fc\ud30c\uc218\ub97c F=1\/T (T : \uc2dc\uac04\uc8fc\uae30) \ub85c\uc11c \ub2e8\uc704\ub97c \ub77c\uace0 \ud55c\ub2e4\uba74 \uacf5\uac04 \uc8fc\ud30c\uc218 F’=1\/\u03bb (\u03bb : \uacf5\uac04\uc8fc\uae30) \ub85c \ub098\ud0c0\ub0bc \uc218 \uc788\uc73c\uba70, \ub85c \ub098\ud0c0\ub0bc \uc218 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[42567,42566,42568,3111],"class_list":["post-34120","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-filtering","tag-spatial-frequency","tag-42568","tag-3111"],"_links":{"self":[{"href":"https:\/\/blog.agentsoft.co.kr\/index.php\/wp-json\/wp\/v2\/posts\/34120","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.agentsoft.co.kr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.agentsoft.co.kr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.agentsoft.co.kr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.agentsoft.co.kr\/index.php\/wp-json\/wp\/v2\/comments?post=34120"}],"version-history":[{"count":0,"href":"https:\/\/blog.agentsoft.co.kr\/index.php\/wp-json\/wp\/v2\/posts\/34120\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.agentsoft.co.kr\/index.php\/wp-json\/wp\/v2\/media?parent=34120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.agentsoft.co.kr\/index.php\/wp-json\/wp\/v2\/categories?post=34120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.agentsoft.co.kr\/index.php\/wp-json\/wp\/v2\/tags?post=34120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}