CrossbowCam: a handheld adjustable multi-camera system

CrossbowCam: a handheld adjustable multi-camera system This paper presents a novel multi-functional, low-cost handheld multi-camera system (one dimensional camera array) - “CrossbowCam”. The CrossbowCam is suitable for multi-viewpoint image acquisition, smooth switching, alignment and seamless stitching applications. The proposed system differs from the traditional fixed image acquisition systems which are large-sized, high-priced, single functional, and can only captured images at specific locations. With the proposed system, the users can push one single button to change the configuration of the camera array rapidly to divergence (convex arc), parallel (linear), or convergence (concave arc). The three camera configurations can each be suitable for applications such as panorama image stitching, autostereoscopic 3D display, bullet-time (time-freeze) visual effect, 3D scene reconstruction, etc. To rapidly acquire the relationship among cameras after configuration change, we propose a two-stage calibration method to compensate the mechanical misalignment. The first stage adopts the traditional checkerboard calibration method to get the intrinsic parameters (focal length, principal point) and the lens distortion for each camera. The second stage requires no auxiliary tool but utilizes a large number of common feature points from multiple viewpoint images to acquire the extrinsic parameters (translation and rotation matrix) and to compensate the vertical misalignment and the horizontal uneven angle distribution due to the mechanical structure. The proposed system can then insert virtual viewpoint images between actual viewpoint images to allow the viewpoint switching more smoothly. The proposed system has eight cameras with maximum viewing angle of 90° in divergence mode, 38 mm spacing in parallel mode, and imaging radius of 10 m ∼ 0.5 m in convergence mode. We believe that the proposed system can potentially change the consumer habits and becomes the new type of home-use handheld camcorder system in the future. Multimedia Tools and Applications Springer Journals

CrossbowCam: a handheld adjustable multi-camera system

Loading next page...
Springer US
Copyright © 2017 by Springer Science+Business Media New York
Computer Science; Multimedia Information Systems; Computer Communication Networks; Data Structures, Cryptology and Information Theory; Special Purpose and Application-Based Systems
Publisher site
See Article on Publisher Site


You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial