| 摘要 |
<p>An encoder comprises a receiver (101) for receiving a video signal comprising at least one image. An estimator (107) determines a veiling luminance estimate for at least part of a first image of the at least one image in response to image content of one or more of the images. The veiling luminance estimate reflects an amount of eye glare generated in the eye by the image when rendered. A quantization adapter (109) determines a quantization scheme for the at least part of the first image in response to the veiling luminance estimate and an encoding unit (103, 105) encodes the video signal using the quantization scheme for the at least part of the first image. The veiling luminance estimate may be low-pass filtered to emulate human luminance adaptation. A corresponding decoder is provided. Improved encoding can be achieved, especially for High Dynamic Range images.</p> |
