Surveying some papers about this topic, including one of my earlier work.

Light Field Rendering

1. Miriah Meyer et al., Image-based Volume Rendering Using Opacity Light Fields. SCI Institute Technical Report, No. UUSCI-2005-002, University of Utah, 2005.
2. C. Rezk-Salama, et al. Raycastingof Light Field Galleries from Volumetric Data. In EuroVis ‘08 (More spherical light-field for DVR in Severin Todt's webpage).
   

PR/Warping-based Approaches

1. N. Shareef, et al. An Image-based Modelling Approach to GPU-based Rendering of Unstructured Grids. In VG ‘06.
2. Hauswiesner Stefan, Kalkofen Denis, and Schmalstieg Dieter, Multi-Frame Rate Volume Rendering. In EGPGV '10.
   

Explorable Images

1. Anna Tikhonova, et al., Explorable images for visualizing volume data. In PacificVis 2010.
2. Anna Tikhonova, et al., An Exploratory Technique for Coherent Visualization of Time-varying Volume Data. Comput. Graph. Forum 29(3): 783-792 (2010).
3. Anna Tikhonova, et al., Visualization by Proxy: A Novel Framework for Deferred Interaction with Volume Data. IEEE Trans. Vis. Comput. Graph. 16(6): 1551-1559 (2010)
4. Anna Tikhonova, et al., A Preview and Exploratory Technique for Large-Scale Scientific Simulations. In EGPGV 2011.