Light field super resolution through controlled micro-shifts of light field sensor

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Mukati M. U., GÜNTÜRK B. K.

Signal Processing: Image Communication, vol.67, pp.71-78, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 67
  • Publication Date: 2018
  • Doi Number: 10.1016/j.image.2018.05.016
  • Journal Name: Signal Processing: Image Communication
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.71-78
  • Keywords: Light field, Super-resolution, Micro-scanning
  • Istanbul Medipol University Affiliated: Yes


Light field cameras enable new capabilities, such as post-capture refocusing and aperture control, through capturing directional and spatial distribution of light rays in space. Micro-lens array based light field camera design is often preferred due to its light transmission efficiency, cost-effectiveness and compactness. One drawback of the micro-lens array based light field cameras is low spatial resolution due to the fact that a single sensor is shared to capture both spatial and angular information. To address the low spatial resolution issue, we present a light field imaging approach, where multiple light fields are captured and fused to improve the spatial resolution. For each capture, the light field sensor is shifted by a pre-determined fraction of a micro-lens size using an xy translation stage for optimal performance.