METHOD AND DEVICE FOR ENCODING A HIGH-DYNAMIC RANGE FRAME AND/OR DECODING A BITSTREAM

摘要

The present disclosure generally relates to a method and device for encoding a frame, comprising a processor configured for: - encoding (12) a backlight frame determined (11) from the frame to be encoded; - obtaining (13) at least one component of a residual frame by dividing each component of the frame by a decoded version of the backlight frame; - encoding (19) the residual frame; the method is characterized in that the processor is further configured in order that the backlight frame is represented by a weighted linear combination of at least one set of 2D shape functions, the 2D shape functions of each set forming a partition of unity of a domain defined by the union of their supports. The disclosure relates also to a method and device for decoding a bitstream representing a residual frame calculated by dividing a frame by a backlight frame.