| 摘要 |
<p>The image encoder (549) for encoding an image of a high dynamic range scene, comprising: a pixel texture encoding unit (552), arranged to encode pixels colors of the image with an image representation (Im 1) comprising N-bit code words; an image analysis unit (550) arranged to determine and output a region differentiator grey value (gTS), which is a luma value demarcating below it lumas of all pixels of a first object in at least one block of the image, and above it lumas of all pixels of a second object in the at least one block of the image; and a formatter (554) arranged to co-encode in an output image signal (S(Im—1, MET(gTS)) the image representation (Im 1) and the region differentiator grey value (gTS), makes highly versatile use of images encoding HDR scenes possible, in particular encoding them in image formats compatible with existing MPEG video coding standards.</p> |
