论文标题
使用交织的行读数，一种在CMOS图像传感器中实现高动态范围的方法
A Method to Achieve High Dynamic Range in a CMOS Image Sensor Using Interleaved Row Readout
论文作者
论文摘要
我们提出了用于CMOS图像传感器的读数方案，该方案原则上可用于实现任意高的动态范围（HDR）。高信号区域中的线性全井容量（LFWC）通过隔行的行式读取顺序从20 ke $^{ - } $扩展到984 ke $^{ - } $，而在低信号区域中，噪声层保持不变，导致DR的34 db增加。峰值信噪比（PSNR）以连续的方式从43 dB增加到60 dB。这是通过将用户选择的行求和多次读取的用户选择的行实现的。与标准读数方案相比，当模板拟合预测模式时，质量不确定性降低了。示例应用是由于线性和PSNR增加而针对科学成像。
We present a readout scheme for CMOS image sensors that can be used to achieve arbitrarily high dynamic range (HDR) in principle. The linear full well capacity (LFWC) in high signal regions was extended 50 times from 20 ke$^{-}$ to 984 ke$^{-}$ via an interlaced row-wise readout order, whilst the noise floor remained unchanged in low signal regions, resulting in a 34 dB increase in DR. The peak signal-to-noise ratio (PSNR) is increased in a continuous fashion from 43 dB to 60 dB. This was achieved by summing user-selected rows which were read out multiple times. Centroiding uncertainties were lowered when template-fitting a projected pattern, compared to the standard readout scheme. Example applications are aimed at scientific imaging due to the linearity and PSNR increase.
