High-quality real-time full-color Fourier single-pixel imaging

In this Letter, we propose a single-pixel imaging method that can reproduce high-quality full-color images in real time. The method is based on 3-step phase-shifting structured-illumination-based Fourier single-pixel imaging (FSI). To acquire the desired color information, we adopt time-division-multiplexing illumination by using a red, green, blue, and white (RGBW) 4-chip light-emitting diode (LED). Every single chip on the LED can be controlled individually. With the 4-chip LED, we propose a novel, to the best of our knowledge, illumination strategy, termed complex illumination, where two chips are lit at the same. The proposed illumination strategy doubles illumination intensity. As such, the signal-to-noise ratio of the resulting single-pixel measurements is improved, and high-quality full-color single-pixel imaging is ensured. We have also adopted the recently reported adaptive real-time Fourier single-pixel imaging approach to achieve real-time full-color imaging. As experimentally demonstrated, the proposed method can reproduce high-quality full-color images for both static and dynamic scenes. We believe the proposed method adds practicability to single-pixel imaging.