Analysis of the Smartphone Camera Exposure Effect on Laser Extraction

In this study, we investigate the effect of smartphone camera exposure on laser extraction performance in a digital image. The laser extraction is the most crucial operation in laser triangulation systems that obtain object measurements from the projected laser light captured in the image. The exposure settings consist of sensor sensitivity (ISO), aperture, and shutter speed. This study provides insight into the smartphone settings and the exposure adjustment for further complicated laser extraction. A smartphone camera (Apple iPhone 11) and a laser stripe projector operating at 405 nm were employed. Analysis of different ISO values, the effect of aperture and shutter speed on the laser extraction quality was performed.