Parallel Single-Pixel Imaging: A General Method for Direct–Global Separation and 3D Shape Reconstruction Under Strong Global Illumination

Abstract We present parallel single-pixel imaging (PSI), a photography technique that captures light transport coefficients and enables the separation of direct global illumination, to achieve 3D shape reconstruction under strong illumination. PSI is achieved by extending (SI) modern digital cameras. Each pixel on an sensor considered independent unit can obtain image using SI technique. The obtained images characterize behavior between pixels projector camera. However, required number illumination patterns generally becomes unacceptably large in practical situations. introduce local region extension (LRE) method accelerate data acquisition PSI. LRE perceives visible each camera accounts for region. Thus, detected unknowns determined area, which extremely beneficial terms efficiency. possesses several properties advantages. For instance, complete projector–camera pair, without making specific assumptions measured objects requiring special hardware restrictions arrangement pair. perfect property be proven mathematically. stages are straightforward easy implement existing systems. These advantages make general sound theoretical model decompose illuminations perform