Light field super resolution through controlled micro-shifts of light field sensor
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CitationMukati, M. U. ve Güntürk, B. K. (2018). Light field super resolution through controlled micro-shifts of light field sensor. Signal Processing Image Communication, 67, 71-78. https://dx.doi.org/10.1016/j.image.2018.05.016
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.