A traditional limitation of holographic displays has been their image quality. Recent advances in computer-generated holography using a camera-in-the-loop (CITL) approach have demonstrated that these issues can be overcome to improve image-fidelity by treating the system as a negative feedback control loop.

Such an approach demands high bit-depth camera sensors to realise high system bandwidth. Here, we explore boosting the dynamic-range of a given imaging sensor by using a spatially varying exposure (SVE) approach. The exposure levels of adjacent pixels are spatially-multiplexed using an appropriate optical mask and the full image reconstructed from the sampled SVE image, resulting in a boosted dynamic-range with only a small sacrifice in resolution.

This technique is well-tailored to CITL requirements as it promises to boost the dynamic range of the imaging sensor in a single image acquisition. We present our findings on the viability of this approach within the context of CGH displays.