This paper presents a high-resolution non-line-of-sight (NLOS) imaging system that combines sparse scanning with an expanded scanning area to achieve fast and high-quality image reconstruction. The system utilizes liquid crystal planar optical elements (LC-POEs) for angle magnification, enabling a larger scanning area while maintaining high resolution. The authors demonstrate that their design significantly reduces data acquisition time by adopting a sparse scanning method based on the spatial correlation of measurement data. Experimental results show that the proposed system achieves a >20% reduction in data acquisition time while maintaining or improving image quality, as measured by peak signal-to-noise ratio (PSNR) and root mean square error (RMSE). The study also explores the impact of scanning area and sampling rate on lateral resolution, and provides detailed insights into the performance of the LC-POEs in achieving angle magnification. The research highlights the potential of combining sparse scanning with expanded scanning areas to enhance NLOS imaging capabilities, offering a novel approach to real-time NLOS imaging applications.This paper presents a high-resolution non-line-of-sight (NLOS) imaging system that combines sparse scanning with an expanded scanning area to achieve fast and high-quality image reconstruction. The system utilizes liquid crystal planar optical elements (LC-POEs) for angle magnification, enabling a larger scanning area while maintaining high resolution. The authors demonstrate that their design significantly reduces data acquisition time by adopting a sparse scanning method based on the spatial correlation of measurement data. Experimental results show that the proposed system achieves a >20% reduction in data acquisition time while maintaining or improving image quality, as measured by peak signal-to-noise ratio (PSNR) and root mean square error (RMSE). The study also explores the impact of scanning area and sampling rate on lateral resolution, and provides detailed insights into the performance of the LC-POEs in achieving angle magnification. The research highlights the potential of combining sparse scanning with expanded scanning areas to enhance NLOS imaging capabilities, offering a novel approach to real-time NLOS imaging applications.