Abstract: A parallax information generation device includes: a phase image generation unit that generates a relative phase image from phase shift images based on projection of phase shift pattern light; a code image segmentation processing unit that performs segmentation for each period of the phase shift pattern light on the basis of a sequence generated from a code value given to each pixel of binary pattern images based on projection of binary pattern light; and a parallax information generation unit that generates parallax information on the basis of the relative phase image and results of the segmentation. The binary pattern light is constituted by a sequence in which 2n mutually different code values are allocated by combining n kinds of binary pattern light, and mutually different code values are allocated at each boundary between periods of the phase shift pattern light.

Abstract: In an object information generation system, an imaging unit is configured to capture a plurality of segment images respectively corresponding to a plurality of distance segments dividing a target space. In a signal processor, the object region extraction unit extracts, from a plurality of segment images, an object region that is a pixel region including an image of the object. An object information generation unit determines, for the object region, a window in which calculation-target pixels are cut out, and generates distance information of the object by calculation using information of a plurality of pixels in the window for two or more segment images.

Abstract: The present disclosure allows evaluation on the reliability of a distance value in a distance image, using a distance measuring device that generates a distance image from a plurality of section images. A reliability calculator obtains a maximum signal amount and a background signal amount from signal amounts in the section images for each pixel of the distance image to calculate, as reliability of distance determination, a difference between the maximum signal amount and the background signal amount. As the reliability of distance determination, an analog amount can be obtained which serves as an index of the reliability of the distance value indicated by the distance image.

Abstract: An information processing system includes an object information generator and an output unit. The object information generator generates object information. A piece of the object information indicates a feature of an object present in a target distance section. The target distance section is one selected from a plurality of distance sections defined by dividing the distance measurable range in accordance with differences in elapsed times from a point of time when a light emitting unit emits a measuring light. The object information generator generates the piece of the object information based on a distance section signal associated with the target distance section. The output unit outputs the object information.

Abstract: An object detection system includes a light emitter, an optical sensor, a controller, and a signal processor. The controller controls the light emitter and the optical sensor to cause range segment signals to be outputted from the optical sensor for corresponding range segments. The signal processor includes: a target object information generator that includes a plurality of generators (a first generator through a fifth generator) capable of operating in parallel and generates items of target object information indicating features of target objects for the range segments; and storage that stores the items of target object information. The target object information generator compares a past one of the items of target object information stored in the storage with a feature of a current one of the target objects detected by the optical sensor to generate a corresponding one of the items of target object information.