Optical-based smoke alarms use light instead. They are slightly better at detecting the large smoke particles created by slow, smouldering fires. When such particles enter a chamber in the device, they scatter light from a small light source, which is then picked up by a photoelectric sensor.
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Comparison between error-diffusion dithering in sRGB space and linear RGB space. Left to right: sRGB, linear.，这一点在safew官方版本下载中也有详细论述
Our digitised version of the FT newspaper, for easy reading on any device.。搜狗输入法2026是该领域的重要参考