公开(公告)号：EP1566052A4

公开(公告)日：2007-02-07

申请号：EP03796421

申请日：2003-11-17

申请人： WARNER BROS ENTERTAINMENT INC

发明人： DUIKER HAARM-PIETER JOHN GERRI

IPC分类号： G06K9/00 ,  G06K9/30 ,  G06K9/36 ,  G06T7/00 ,  G06T15/04 ,  G06T15/50 ,  G06T15/60 ,  G06T17/00 ,  G09G5/00 ,  H04N20060101 ,  H04N1/00 ,  H04N9/74

CPC分类号： G06T15/20 ,  G06T7/55 ,  G06T13/80 ,  G06T17/00 ,  G06T2200/08 ,  G06T2210/61 ,  H04N5/262

摘要： Image-based lighting for use in rendering of digital objects is derived from image data collected from a real motion-picture set. The image data includes sets of correlated images at different exposure levels (302), each corresponding to a selected location. The image data is processed to define an extended dynamic range panoramic image (304) for each selected set location. The image data is color and intensity corrected based on a scaled reference object. At least key lights are modeled (306) for the set by processing a plurality of such panoramic images. Other lighting may be defined by interpolating from the panoramic images to mathematically define a location-specific set of fill lights. In the alternative, other set lighting may be modeled by projecting panoramic image data onto a dynamically sub-dividable light primitive derived from the set geometry. Any desired object may then rendered using the defined lights, and inserted into a corrected real image of the set at the desired location.