Abstract: A device comprises memory, a display characterized by a display characteristic, and processors coupled to the memory. The processors execute instructions causing the processors to receive data indicative of the display characteristic, data indicative of ambient lighting, and data indicative of content characteristics for a content item; determine a tone mapping curve for the content item based on the data indicative of content characteristics; determine a first, so-called “anchor” point along the tone mapping curve; modify a first portion of the tone mapping curve below the anchor point based on the data indicative of ambient lighting; modify a second portion of the tone mapping curve above the anchor point based on the data indicative of the display characteristic; perform tone mapping for the content item based on the modified toned mapping curve to obtain a tone mapped content item; and cause the display to display the tone mapped content item.

Abstract: A device comprises memory, a display characterized by a display characteristic, and processors coupled to the memory. The processors execute instructions causing the processors to receive data indicative of the display characteristic, data indicative of ambient lighting, and data indicative of content characteristics for a content item; determine a tone mapping curve for the content item based on the data indicative of content characteristics; determine a first, so-called “anchor” point along the tone mapping curve; modify a first portion of the tone mapping curve below the anchor point based on the data indicative of ambient lighting; modify a second portion of the tone mapping curve above the anchor point based on the data indicative of the display characteristic; perform tone mapping for the content item based on the modified toned mapping curve to obtain a tone mapped content item; and cause the display to display the tone mapped content item.

Abstract: Techniques for adjusting formats of images and video are presented, for example where an SDR source is presented on an HDR display, or vice versa. Techniques include deriving a conversion profile for image data where the conversion profile is responsive to parameters describing characteristics of a domain of source image data and characteristics of a domain of a target rendering environment. Some techniques include creating a tone curve from weighted basis functions.

Abstract: A video encoder identifies scene changes during the encoding of video sequences based on the distribution of macroblock types within each image. Once an image is identified as a scene change, control information is sent to a quantizer to adjust the quantization of the image to improve image quality. The image quantization is improved without changing the frame or picture type of the image within its group of pictures. To improve the image quality, the quantizer can directly or indirectly change the quantization parameter used to quantize the DCT coefficients for the image.

Abstract: Techniques are provided which allow computers with relatively less computational power to perform dynamic conversion of video from inter-frame dependent format to an independent-frame format while playing the video as it is being converted. If the conversion operation is not keeping up with the arrival of the incoming video, the video is spooled within the computer system. The playback and conversion operations proceed as the spooling is performed. Thus, to a viewer of the video, the video may appear to slow, but the playback and conversion operation proceed without losing frames.