{"id":9827,"date":"2011-08-18T10:07:00","date_gmt":"2011-08-18T10:07:00","guid":{"rendered":"http:\/\/melotopia.net\/b\/?p=9827"},"modified":"2011-08-18T10:07:00","modified_gmt":"2011-08-18T10:07:00","slug":"%eb%aa%a8%eb%a5%b4%eb%8a%94-%ec%9b%90%ec%9d%98-%ec%a4%91%ec%8b%ac","status":"publish","type":"post","link":"http:\/\/melotopia.net\/b\/?p=9827","title":{"rendered":"\ubaa8\ub974\ub294 \uc6d0\uc758 \uc911\uc2ec"},"content":{"rendered":"
\n
\n\"\"\n<\/div>\n

\uc704\uc640 \uac19\uc740 \uc0ac\uc9c4\uc774 \uc788\ub2e4. \uc800 \uc0ac\uc9c4\uc73c\ub85c\ubd80\ud130 \ub179\uc0c9 \ud14c\ub450\ub9ac\ub97c \uac16\ub294 \ub178\ub780\uc0c9 \uc6d0\uc758 \uc911\uc2ec\uc774 \uc5b4\ub514\uc778\uc9c0 \uc815\ud655\ud788 \uacb0\uc815\ud574\uc57c \ud55c\ub2e4. \uc88c\ud45c\uac12\uc740 \ud53d\uc140\ub85c \uc8fc\uc5b4\uc838 \uc788\ub2e4.<\/p>\n

\uc6d0\ubcf8 \uc0ac\uc9c4\uc740 \ubcf4\uc548\uad00\uacc4\uc0c1 \uacf5\uac1c\ud560 \uc218 \uc5c6\uace0, \uc544\ubb34\ud2bc \ub0b4\uac00 \uc5bb\uc740 \uc774\ubbf8\uc9c0\ub294 \uc800\ub807\uac8c \uc0dd\uacbc\ub2e4.<\/p>\n

\uadf8\ub798\uc11c, \uc77c\ub2e8 \uc800 \uc6d0\uc744 \uc774\ub8e8\ub294 \ub179\uc0c9 \ud14c\ub450\ub9ac\uc758 \uc5ec\ub7ec \uc810\ub4e4\uc744 \ucc0d\uc5b4\uc11c \ub2e4\uc74c\uacfc \uac19\uc740 \uac12\uc744 \uc5bb\uc5b4\ub0c8\ub2e4.
\n <\/p>\n

\n (23, 176)
\n
\n (156,38)
\n
\n (33,492)
\n
\n (8,216)
\n
\n (43,143)
\n
\n (42,506)
\n \n<\/div>\n

\uc774 \uc810\ub4e4\uc740 \ud558\ub098\uc758 \uc6d0 \uc704\uc5d0 \uc788\ub294 \uc810\uc774\ub2e4. (\uc6d0\ud55c\ub2e4\uba74 \uc218\ubc31\uac1c\uc758 \uc88c\ud45c\ub97c \ucc0d\uc5b4\ubcfc \uc218\ub3c4 \uc788\ub2e4.)<\/p>\n

\uc77c\ub2e8, \ud5e4\ub860\uc758 \uacf5\uc2dd\uc744 \uc751\uc6a9\ud55c \uc678\uc811\uc6d0\uc758 \uacf5\uc2dd\uc744 \uc0ac\uc6a9\ud558\uba74 \ubc18\uc9c0\ub984\uc740 \uc5bb\uc744 \uc218 \uc788\ub2e4.
\n <\/p>\n

\n s = (a+b+c)\/2
\n
\n R = abc\/(4sqrt(s(s-a)(s-b)(s-c)))\n <\/div>\n

\n a,b,c\ub294 \uc678\uc811\uc6d0\uc744 \uacb0\uc815\ud558\ub294 \uc0bc\uac01\ud615\uc758 \uc138 \ubcc0\uc758 \uae38\uc774\uac00 \ub41c\ub2e4.<\/p>\n

\ubb38\uc81c\ub294 \uc624\ucc28\uac00 \uc0dd\uae34\ub2e4\ub294 \uc810.<\/p>\n

\ucd5c\uc18c\uc81c\uacf1\ubc95\uc744 \uc0ac\uc6a9\ud558\uace0 \uc2f6\uc740\ub370, \uc6d0\uc758 \ubc29\uc815\uc2dd\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.
\n <\/p>\n

\n (x-x0)*(x-x0)+(y-y0)*(y-y0) = r*r\n <\/div>\n

\n \uc774 \uc6d0\uc758 x0, y0, r\uc744 \uc5bb\uc5b4\ub0bc \uc218 \uc788\ub2e4\uba74 \uc88b\uaca0\ub2e4.<\/p>\n

\uadf8\ub798\uc11c \uc9c0\uae08 \uacc4\uc0b0\uc911… (\uacc4\uc0b0 \ub05d\ub098\uba74 \uc774 \uae00\uc740 \uc218\uc815\ub428.)<\/p>\n

2\ucc28\uc2dd\uc744 \ucc3e\uc544\uc57c \ud560 \ub54c\uc5d0 \ucd5c\uc18c\uc81c\uacf1\ubc95\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \uc54c\uc544\ub0b8 \uac83 \uac19\uae34 \ud55c\ub370, \uc798 \uc548\ub41c\ub2e4.<\/p>\n

—
\n
\n \uacb0\uad6d \uc815\ub2f5\uc744 \uac80\uc0c9\ud588\ub2e4.
\n
\n<\/p>\n

circle_fit.pdf\uc5d0 \uc561\uc138\uc2a4\ud558\ub824\uba74 \ud074\ub9ad\ud558\uc138\uc694.<\/a><\/p>\n

<\/a>
\n
\n<\/p>\n

gander.pdf\uc5d0 \uc561\uc138\uc2a4\ud558\ub824\uba74 \ud074\ub9ad\ud558\uc138\uc694.<\/a><\/p>\n

<\/a><\/p>\n

\ub09c \uc218\ud559\uc801 \uc7ac\ub2a5\uc774 \uc5c6\ub294\uac00\ubcf4\ub2e4.<\/p>\n

—
\n
\n \uc704\uc758 \uc54c\uace0\ub9ac\uc998\uc744 \uc801\uc6a9\ud558\uc5ec \ub9cc\ub4e0 \ud504\ub85c\uadf8\ub7a8. \ud30c\uc774\uc36c\uc774\ub2e4.
\n <\/p>\n

\n import numpy.linalg as la
\n
\n import numpy<\/p>\n

A = numpy.matrix([[23,176],
\n
\n [156,38],
\n
\n [33,492],
\n
\n [8,216],
\n
\n [43,143],
\n
\n [42,506],
\n
\n [4,434],
\n
\n [180,24],
\n
\n [41,506],
\n
\n [5,221],
\n
\n [253,2]])
\n
\n avgA = 0
\n
\n avgB = 0
\n
\n uu = 0
\n
\n vv = 0
\n
\n uv = 0
\n
\n uuu = 0
\n
\n vvv = 0
\n
\n uvv = 0
\n
\n vuu = 0<\/p>\n

for i in A:
\n
\n avgA+=i[0,0]
\n
\n avgB+=i[0,1]<\/p>\n

avgA\/=len(A)
\n
\n avgB\/=len(A)<\/p>\n

for i in A:
\n
\n i[0,0]-=avgA
\n
\n i[0,1]-=avgB<\/p>\n

for i in A:
\n
\n uu += i[0,0]*i[0,0]
\n
\n vv += i[0,1]*i[0,1]
\n
\n uv += i[0,0]*i[0,1]
\n
\n uuu += i[0,0]*i[0,0]*i[0,0]
\n
\n vvv += i[0,1]*i[0,1]*i[0,1]
\n
\n uvv += i[0,0]*i[0,1]*i[0,1]
\n
\n vuu += i[0,1]*i[0,0]*i[0,0]<\/p>\n

U = numpy.matrix([[uu,uv],[uv,vv]])
\n
\n UU = numpy.matrix([[0.5*(uuu+uvv)],[0.5*(vvv+vuu)]])
\n
\n S = la.inv(U).dot(UU)
\n
\n print(S[0]+avgA, S[1]+avgB)
\n \n<\/div>\n

\n \uadf8\ub798\uc11c \uc5bb\uc740 \ub2f5\uc740 (323.8, 327.7)\uc774\ub2e4. \uc810\uc774 \ub354 \ub9ce\uc544\uc9c0\uba74 \ub354 \uc815\ud655\ud574 \uc9c8\uc218\ub3c4 \uc788\uaca0\uc9c0\ub9cc…
\n <\/p>\n

\n
\n
\n\"\uc2e0\uace0\"
\n<\/a>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

\uc704\uc640 \uac19\uc740 \uc0ac\uc9c4\uc774 \uc788\ub2e4. \uc800 \uc0ac\uc9c4\uc73c\ub85c\ubd80\ud130 \ub179\uc0c9 \ud14c\ub450\ub9ac\ub97c \uac16\ub294 \ub178\ub780\uc0c9 \uc6d0\uc758 \uc911\uc2ec\uc774 \uc5b4\ub514\uc778\uc9c0 \uc815\ud655\ud788 \uacb0\uc815\ud574\uc57c \ud55c\ub2e4. \uc88c\ud45c\uac12\uc740 \ud53d\uc140\ub85c \uc8fc\uc5b4\uc838 \uc788\ub2e4. \uc6d0\ubcf8 \uc0ac\uc9c4\uc740 \ubcf4\uc548\uad00\uacc4\uc0c1 \uacf5\uac1c\ud560 \uc218 \uc5c6\uace0, \uc544\ubb34\ud2bc \ub0b4\uac00 \uc5bb\uc740 \uc774\ubbf8\uc9c0\ub294 \uc800\ub807\uac8c \uc0dd\uacbc\ub2e4. \uadf8\ub798\uc11c, \uc77c\ub2e8 \uc800 \uc6d0\uc744 \uc774\ub8e8\ub294 \ub179\uc0c9 \ud14c\ub450\ub9ac\uc758 \uc5ec\ub7ec \uc810\ub4e4\uc744 \ucc0d\uc5b4\uc11c \ub2e4\uc74c\uacfc \uac19\uc740 \uac12\uc744 \uc5bb\uc5b4\ub0c8\ub2e4. (23, 176) (156,38) (33,492) (8,216) (43,143) (42,506) \uc774 \uc810\ub4e4\uc740 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-9827","post","type-post","status-publish","format-standard","hentry","category-academic"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8o6gA-2yv","jetpack-related-posts":[],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/9827","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9827"}],"version-history":[{"count":0,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/9827\/revisions"}],"wp:attachment":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9827"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9827"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}