Lenslet Light Field Imaging Scalable Coding
Joao Garrote, Catarina Brites, João Ascenso, Fernando M. B. Pereira · 2018
Light fields have emerged as one of the most promising 3D representation formats, enabling a richer and more immersive representation of a visual scene. The lenslet light field acquisition approach consists in placing an array of micro-lenses between the camera main lens and the photosensor to allow capturing both the intensity and the direction of the light rays. This type of representation format offers new interaction possibilities with the visual content, notably a posteriori refocusing and visualization of different perspectives of the visual scene. However, this representation model is associated to very large amounts of data, thus requiring efficient coding solutions in order applications involving storage and transmission may be deployed. This paper proposes a novel lenslet light field imaging scalable coding solution adopting a wavelet-based approach, able to offer view, quality and spatial scalabilities, to meet the characteristics of multiple types of displays, transmission channels and user needs. The performance results show that the proposed coding solution performs better than alternative scalable coding solutions, notably JPEG 2000.