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GEOMETRIC CORRECTION OF RADIOGRAPHIC IMAGES USING GENERAL PURPOSE IMAGE PROCESSING PROGRAM

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Abstract

º» ¿¬±¸´Â ºñ±Ô°ÝÈ­½ÃÄÑ ÃÔ¿µÇÑ µÎÀåÀÇ ¹æ»ç¼± »çÁøÀ» ÀÏ¹Ý ¿µ»óó¸® ÇÁ·Î±×·¥À¸·Î ±âÇÏ
ÇÐÀû º¸Á¤À» ÇÏ¿© µðÁöÅ» °øÁ¦ ÃÔ¿µ¼úÀ» ½ÃÇàÇÑ °á°ú¸¦ °³Àκ°·Î Á¦ÀÛµÈ Çʸ§À¯ÁöÀåÄ¡¸¦ ÀÌ
¿ëÇÏ¿© ±Ô°ÝÈ­ ½ÃÄÑ ÃÔ¿µÇÑ µÎÀåÀÇ ¹æ»ç¼±»çÁøÀ» µðÁöÅ» °øÁ¦ ÃÔ¿µ¼úÀ» ½ÃÇàÇÑ °á°ú¿Í ºñ±³
ÇÏ¿© ÀÏ¹Ý ¿µ»óó¸® ÇÁ·Î±×·¥ÀÇ ÀÓ»óÀû À¯¿ë¼ºÀ» Æò°¡Çغ¸°íÀÚ ½ÃÇàÇÏ¿´´Ù.
19¸íÀÇ ÀÚ¿øÀÚ¸¦ ´ë»óÀ¸·Î ÇÏ¿©, °¢ ȯÀÚ¿¡¼­ 4¸ÅÀÇ ÇϾDZ¸Ä¡ºÎ Ä¡±Ù´Ü »çÁøÀ» ÃÔ¿µÇÏ¿´
´Ù. ±×Áß 2¸Å´Â XCP Çʸ§ À¯ÁöÀåÄ¡¸¸À¸·Î ÆòÇàÃÔ¿µ¹ýÀ¸·Î ÃÔ¿µÇÏ¿´°í, ³ª¸ÓÁö 2¸Å´Â ±³ÇÕ
Á¦¿¡ ÀλóÀ縦 ºÎ°¡ÇÏ¿© °³Àκ°·Î Á¦ÀÛµÈ XCPÇʸ§ À¯ÁöÀåÄ¡¸¦ ÀÌ¿ëÇÏ¿© Ç¥ÁØÈ­½ÃÄÑ ¿ª½Ã
ÆòÇàÃÔ¿µ¹ýÀ¸·Î ÃÔ¿µÇÏ¿´´Ù. ±âÇÏÇÐÀû º¸Á¤Àº 'Adobe Photoshop'°ú 'NlH Image' ÇÁ·Î±×·¥
À¸·Î ½ÃÇàÇÏ¿´´Ù. ƯÈ÷ 'Adobe Photoshop'ÀÇ ÀÓÀÇ¿µ»óȸÀü ±â´É°ú 'NIH Image'±â °øÁ¦½Ã
¼ú½Ã ÁßøµÈ »çÁøÀ» Åõ¸íÇÏ°Ô º¸¿©ÁÖ´Â ±â´É, º´Áø±â´ÉÀ» È°¿ëÇÏ¿´´Ù. µÎ »çÁøÀÇ À¯»ç¼ºÀ»
ÃøÁ¤Çϱâ À§ÇØ °øÁ¦µÈ »çÁøÀÇ °èÁ¶µµÀÇ Ç¥ÁØÆíÂ÷¸¦ ±¸ÇÏ¿´´Ù. Ç¥ÁØÈ­±ºÀÇ Æò±Õ Ç¥ÁØÆíÂ÷°¡
±âÇÏÇÐÀû º¸Á¤±ºÀÇ Æò±Õ Ç¥ÁØÆíÂ÷º¸´Ù ¾à°£ ³·¾ÒÀ¸³ª, Åë°èÀûÀ¸·Î À¯ÀǼºÀÌ ÀÖ´Â Â÷À̸¦ º¸
ÀÌÁö´Â ¾Ê¾Ò´Ù. À§ÀÇ °á°ú·Î ¹Ì·ç¾îº¸¾Æ, ÇϾDZ¸Ä¡ºÎ ¿¡¼­ XCP Çʸ§ À¯ÁöÀåÄ¡·Î ÆòÇàÃÔ¿µ
ÇÑ ºñÇ¥ÁØÈ­¹æ»ç¼±»çÁøÀ» 'Adobe Photoshop'°ú 'NIH Image' ÇÁ·Î±×·¥À» ÀÌ¿ëÇÏ¿© ±âÇÏÇÐ
Àû º¸Á¤À» ÇÒ¼ö ÀÖÀ¸¸®¶ó »ç·áµÈ´Ù.
#ÃÊ·Ï#
The present study was undertaken to compare geometric corrected image by
general-purpose image processing program for the Apple Macintosh ¥± computer(NIH
Image, Adobe Photoshop) with standardized image by individualized custom fabricated
alignment instalment.
Two non-standardized periapical films with XCP film holder only were taken at the
lower molar portion of 19 volunteers. Two standardized periapical films with customized
XCP film holder with impression material on the bite-block were taken for each person.
Geometric correction was performed with Adobe Photoshop and NIH Image program.
Specially, arbitrary image rotation function of 'Adobe Photoshop' and subtraction with
transparency function of 'NIH Image' were utilized. The standard deviations of grey
values of subtracted images were used to measure image similarity. Average standard
deviation of grey values of subtracted images of standardized group was slightly lower
than that of corrected group. However, the difference was found to be statistically
insignificant(p>0.05). It is considered that we can use 'NIH Image' and 'Adobe
Photoshop' program for correction of nonstandardized film taken with XCP film holder
at lower molar portion.

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