A high dynamic range imaging method based on the digital micromirror device

To address the issue of insufficient dynamic range in conventional camera imaging under high dynamic range scenes, a high dynamic range imaging method based on the digital micro-mirror device (DMD) has been designed. This method utilizes the DMD as an optical modulation device to modulate the incident light at the pixel level. Additionally, a continuous imaging image mapping method has been developed, enabling precise control over DMD to adjust the exposure levels of different pixels, thereby enhancing the system’s dynamic range. Mathematical logical deductions demonstrate that the theoretical dynamic range enhancement of the designed systems is directly related to the DMD control method. Experimental results confirm that the designed imaging method has the capability to increase the dynamic range by 58 dB.