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This paper presents a signal processing engine aiming to provide the brush function for electronic papers. The engine contains four stages: (a) screening the detected pixel coordinates, (b) interpolating pixels, (c) image halftoning for generating more visual gray levels, and (d) driving the pixels to the target states. The experimental results show that the engine can complete the pixel interpolation...
A image processing engine, which performs halftoning and calibration of nonlinear optical response for electrophoretic displays (EPDs), is proposed. The engine processes images according to temperature dependent characteristics of EPDs for getting better visual quality.
The electrophoretic display (EPD) has dominated the panel used in electronic readers. However, getting more than 16 observable gray levels on an EPD is still a big challenge. A true color image should be converted into a 16 gray level image for displaying it on an EPD. In this paper, we propose an image processing tool that combines contrast enhancement and the modified Nasik pattern halftoning to...
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