| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for extending bit-depth of a display system. SOLUTION: The method includes the steps of measuring the static display noise (a stationary pattern error 20) of a display device 14, using the display noise to create pseudo-random noise 12 and subtracting the pseudo-random noise 12 from a contone image. After the noise-compensated image data is quantized in a quantizer 16 and displayed on a screen 18, the noise in the display device 14 will substantially convert the noise-compensated image data back to contone image data with few or no contouring artifacts. Other embodiments include using the inherent noise of the human visual system instead of the static display noise, or both. Specific adjustments can be made to the noise of the human visual system for color displays. COPYRIGHT: (C)2005,JPO&NCIPI |
