Back to results
US 2006/0233438 A1Published application
Methods and systems for video processing using super dithering
AssigneeSamsung Electronics Co., Ltd.
InventorsNing Xu, Yeong-Taeg Kim
Life of this patent
Estimating the term…
Abstract
A super dithering method of color video quantization maintains the perceived video quality on a display with less bit depth of color than the input video. Super dithering relies on both the spatial and temporal properties of human visual system, wherein spatial dithering is applied to account for human eye's low pass spatial property, while temporal dithering is applied to achieve the quantization level of the spatial dithering.
Claims18
A method for video processing, comprising the steps of:
- receiving an input color signal comprising RGB of a pixel and its spatial and temporal positions;
- quantizing the RGB signal into a quantized RGB signal having an intermediate quantization level;
- and
- further quantizing the quantized RGB signal having the intermediate quantization level signal, into a final quantization level based on its temporal position and spatial position.
1 more element
A video quantization system, comprising:
- means for receiving an input color signal representing a pixel and its spatial and temporal positions;
- a spatial dithering means that applies spatial dithering to the input signal to generate an intermediate signal;
- and
- a temporal dithering means that applies data dependent temporal dithering to the intermediate signal to provide a final signal having quantization level based on its temporal position and spatial position.
1 more element
Dependencies are inferred from the claim text.