Digital sensor apparatus and devices, namely, digital image sensors and detectors for optical sensing and/or depth estimation; sensor systems, namely sensor systems comprising of at least one optical sensor comprising photodetectors; sensors and detectors, namely, image sensors and detectors comprising photonic integrated circuits to detect and measure light and image or sense a scene and/or estimate the depth of points in the scene; cameras; apparatus for the transmission of images, namely, an optical sensor and camera to detect and measure light and image or sense a scene and/or estimate the depth of points in the scene; image capturing and developing devices, namely, an optical sensor and camera to image or sense a scene and/or estimate the depth of points in the scene; software in relation to the aforementioned products, namely, recorded or downloadable computer software for use in operating and controlling image sensors and detectors for the interpretation, processing and analyzing of images produced therefrom