An apparatus and method for insuring the proper alignment of a detected vein pattern and a projected vein pattern are disclosed. The apparatus enhances the visual appearance of veins so that an error that can lead to improper patient care or injury can be avoided.

A system including a light source that, in operation, projects dots onto a target, the dots being formed by first light; a first photodetector that, in operation, detects second light resulting from the projection of the dots onto the target; and a circuit. The circuit, in operation, determines whether the target is a living body or not based on the second light, performs a biometric authentication of the target, and authenticates an individual, in response to a determination that the target is a living body and a result of the biometric authentication.

A projection display unit and a function control method. The projection display unit includes: a projection optical system including an illumination section, a projection lens, and a light valve; and a detection optical system including an image pickup device, the image pickup device being disposed in a position optically conjugating with the light valve, wherein: the detection optical system is configured to detect whether an input operation is performed in a peripheral region of a projection region on a projection surface, and in response to detection by the detection optical system in the peripheral region, a specific function is caused to be executed.

A feature surface projection system includes a projector, a camera, and a controller. The projector projects a structured light and an image beam to a feature surface at different times. The structured light forms a structured light pattern on the feature surface, and the image beam forms an image on the feature surface. The camera photographs the structured light pattern and the image at different times. The controller is electrically connected to the projector and the camera, calculates a position of a feature point of the feature surface, and determines a difference between a position of a feature point of the image and the position of the feature point of the feature surface to determine whether to adjust the image beam. A projection method for a feature surface is also provided. The feature surface projection system provides an automatic alignment function between a projected content and the feature surface.

A feature surface projection system includes a projector, a camera, and a controller. The projector projects a structured light and an image beam to a feature surface at different times. The structured light forms a structured light pattern on the feature surface, and the image beam forms an image on the feature surface. The camera photographs the structured light pattern and the image at different times. The controller is electrically connected to the projector and the camera, calculates a position of a feature point of the feature surface, and determines a difference between a position of a feature point of the image and the position of the feature point of the feature surface to determine whether to adjust the image beam. A projection method for a feature surface is also provided. The feature surface projection system provides an automatic alignment function between a projected content and the feature surface.

An encoded information reading (EIR) terminal can comprise a microprocessor, a memory, and an EIR device including a two-dimensional imager. The EIR device can be configured to output raw message data containing an encoded message and/or outputting a decoded message corresponding to an encoded message. The EIR terminal can be configured, responsive to acquiring an image containing decodable indicia, to pre-process the acquired image and transmit the pre-processed image to an external decoding computer for decoding the decodable indicia.

A human detection device according to an aspect of the present disclosure includes at least one light source that, in operation, projects, onto a target, at least one dot formed by first light, the target including a person and an object other than the person; an image capturing system including photodetector cells that detect second light from the target on which the at least one dot is projected, the image capturing system, in operation, generating and outputting an image signal denoting an image of the target on which the at least one dot is projected; and an arithmetic circuit that is connected to the image capturing system and that, in operation, generates and outputs information indicating whether the person is located at a position corresponding to each pixel included in the image denoted by the image signal.

An apparatus and method for insuring the proper alignment of a detected vein pattern and a projected vein pattern are disclosed. The apparatus enhances the visual appearance of veins so that an error that can lead to improper patient care or injury can be avoided.

Methods and systems are provided for automatically selecting a target area to project content thereon. For example, a projection device receives content to be projected and content attributes of the content. The projection device also captures images of candidate areas and determines candidate area characteristics based on the captured images. The projection device generates a respective quality-of-projection indicator based on the content attributes and the candidate area characteristics. The projection device selects the candidate area with the highest quality-of-projection indicator as the target area on which the content is to be projected.

An electronic device comprises a projector that is configured to project an image and a control unit. The control unit is configured to control an orientation of the image to be projected to a first orientation when the electronic device is in a first attitude, and to control the orientation of the image to be projected to a second orientation different from the first orientation when the electronic device is in a second attitude different from the first attitude.