Imaging apparatuses and a time of flight imaging method
摘要
說明書
The imaging apparatus 100 may be used to determine distance information related to an object 104 or to produce a three-dimensional image of the object 104, for example. For example, the imaging apparatus 100 may be a camera, such as a time of flight (TOF) camera. The object may be a person, or thing, or scenery to be photographed, for example. For example, the object may be a three-dimensional (3D) scene or object, e.g. having a height, width and depth.
The distance information related to the object may be the distance between the object or the distances between different regions of the object and at least part of the imaging apparatus, for example. For example, the distance information to be determined by the apparatus 100 may be a distance between one or more different locations or one or more regions or points of the surface profile of the object and at least part of the imaging apparatus 100, for example. By determining the distance information related to the object, three-dimensional information (e.g. the height, width and depth) about the object or regions of the object may be determined by the imaging apparatus.
The first 111 and second 112 light emitter may each respectively include one or more light sources, e.g. one or more light emitting diodes (LED) or lasers, for example. The first 111 and second 112 light emitter may each be configured to carry out active illumination of the object with a modulated optical signal, e.g. modulated infra-red light or visible light, modulated with an electrical modulation control signal, for example. The first 111 and the second 112 light emitter may each be configured to emit the modulated optical signal at a modulations frequency (e.g. between 1 MHz to 200 MHz) corresponding to the frequency of the modulation control signal, for example.
