Device and method for dynamic range expansion in a virtual reality scene

A non-transitory machine readable medium having stored thereon machine executable instructions that, when executed on a processor, adapt at least an area of a lower dynamic range visual content of a virtual reality scene to a higher dynamic range display of said area, the instructions causing the processor to:

• determine a range expansion representation in said area based on at least two elementary range expansion representations in said area, said elementary range expansion representations being associated with respectively at least two planar key views selected among a set of planar key views associated with said virtual reality scene and being based on parameter values associated with the two planar key views, said elementary range expansion representations being combined by weighting them with respective weights decreasing with distances from at least part of said area to said associated planar key views, and
• expand dynamic range of said area by determining said higher dynamic range visual content from said range expansion representation,
• wherein at least one of said parameter values associated with at least one of said planar key views depends on the lower dynamic range visual content in said at least one of said planar key views and said parameter values are adapted to expand a dynamic range of a visual content.