DOI QR코드

DOI QR Code

A Study on Effective Stitching Technique of 360° Camera Image

360° 카메라 영상의 효율적인 스티칭 기법에 관한 연구

  • Lee, Lang-Goo (Dept. of Multimedia, Graduate School of Digital Image and Contents, Dongguk University) ;
  • Chung, Jean-Hun (Dept. of Multimedia, Graduate School of Digital Image and Contents, Dongguk University)
  • 이랑구 (동국대학교 영상대학원 멀티미디어학과) ;
  • 정진헌 (동국대학교 영상대학원 멀티미디어학과)
  • Received : 2017.12.15
  • Accepted : 2018.02.20
  • Published : 2018.02.28

Abstract

This study is a study on effective stitching technique for video recorded by using a dual-lens $360^{\circ}$ camera composed of two fisheye lenses. First of all, this study located a problem in the result of stitching by using a bundled program. And the study was carried out, focusing on looking for a stitching technique more efficient and closer to perfect by comparatively analyzing the results of stitching by using Autopano Video Pro and Autopano Giga, professional stitching program. As a result, it was shown that the problems of bundled program were horizontal and vertical distortion, exposure and color mismatch and unsmooth stitching line. And it was possible to solve the problem of the horizontal and vertical by using Automatic Horizon and Verticals Tool of Autopano Video Pro and Autopano Giga, problem of exposure and color by using Levels, Color and Edit Color Anchors and problem of stitching line by using Mask function. Based on this study, it is to be hoped that $360^{\circ}$ VR video content closer to perfect can be produced by efficient stitching technique for video recorded by using dual-lens $360^{\circ}$ camera in the future.

본 연구는 두 개의 어안렌즈로 구성된 이안식 일체형 $360^{\circ}$ 카메라로 촬영한 영상의 효율적인 스티칭 기법에 관한 연구이다. 먼저, 기본적으로 제공되는 번들 프로그램의 스티칭 결과물의 문제점을 찾아보고, 전문 스티칭 프로그램인 Autopano Video Pro와 Autopano Giga를 사용한 스티칭 결과를 비교 분석하여, 보다 효율적이고 완성도 높은 스티칭 기법을 찾아내는 것에 중점을 두고 연구하였다. 그 결과 번들 프로그램의 문제점으로는 수평과 수직의 왜곡, 노출과 컬러의 불일치, 그리고 매끄럽지 못한 스티칭 라인 등이 나타났으며, Autopano Video Pro와 Autopano Giga의 Automatic Horizon과 Verticals Tool로 수평과 수직을, Levels와 Color 및 Edit Color Anchors로 노출과 컬러를, 그리고 Mask 기능으로 스티칭 라인의 문제를 해결할 수 있었다. 본 연구를 바탕으로 향후 이안식 일체형 $360^{\circ}$ 카메라 촬영 영상의 효율적인 스티칭 기법으로 더욱 완성도 높은 $360^{\circ}$ VR 영상 콘텐츠를 제작할 수 있을 것으로 기대한다.

References

  1. L. G. Lee & J. H. Chung. (2017). A Study on Visual Mise-en-Scene of VR Animation . Journal of Digital Convergence, 15(9), 408.
  2. L. G. Lee & J. H. Chung. (2016). A Study on Visual and Auditory Inducement of VR Image Contents and the Inducement Components of for Immersion Improvement. Journal of Digital Convergence, 14(11), 496.
  3. K. S. Kim & Y. H. Lee. (2016). Comparison and Usage Analysis of 360 Degree VR Video Rigs. The Society of Modern photograpty & Video, 19(1), 90.
  4. J. H. Lee & S. W. Jung. (2016). A Comparison and Analysis of 360-degree Camera Devices. THE INSTITUTE OF ELECTRONICS ENGINEERS OF KOREA, 2016(6), 953.
  5. C. H. Kim. (2016). A Comparative Study for Virtual Reality $360^{\circ}$ Contents Shooting Equipments Based on Real World. The Korean Society Of Broad Engineers, 21(5), 716-717.
  6. AViNG(Online). http://kr.aving.net/news/view.php?articleId1380978&Branch_ID=kr&rssid=naver&mn_name=news
  7. Google(Online). https://translate.google.co.kr/?hl=ko#en/ko/stitching
  8. wikipedia(Online). https://ko.wikipedia.org/wiki/사용자:IT CTBot/연습장#.E2.91.A1_.EC.8A.A4.ED.8B.B0.EC.B9.AD.28Stitching.29_.ED.8E.B8.EC.A7.91_.EA.B8.B0.EB.B2.95
  9. I. H. Lee. (2016). A Study of Directing on 360 Degree Virtual Reality. KOREA SCIENCE & ART FORUM, 25, 299.
  10. techm(Online). http://techm.kr/bbs/board.php?bo_table=article &wr_id=1948
  11. orah(Online). https://www.orah.co/news/videostitch-studio -v2-beta/
  12. newstown(Online). http://www.newstown.co.kr/news/articleView.html?idxno=297256
  13. digitaltimes(Online). http://www.dt.co.kr/contents.html?article_no=2017041102109932816001
  14. K. S. Kim & Y. H. Lee. (2016). Comparison and Usage Analysis of 360 Degree VR Video Rigs. The Society of Modern photograpty & Video, 19(1), 93.
  15. ItShosun(Online). http://it.chosun.com/news/article.html?no=2836616