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.

Embodiments of the present disclosure, relating to the technical field of projection, provides a projection device. The projection device includes: an imaging module, configured to project images; a position adjustment module, connected to the projection module, and configured to adjust a position of the projection module; a controller, connected to the projection module and the position adjustment module, and configured to control the projection module to project images, and control the position adjustment module to adjust the position of the projection module.

An apparatus includes a projection unit configured to project a video image, a capturing unit configured to capture an image, an identification unit configured to identify a shape of a surface onto which the video image is to be projected, based on the captured image, an inference unit configured to infer a viewpoint position and an attitude of a viewer of the video image based on the captured image, a correction unit configured to correct the video image based on the shape of the surface and the viewpoint position and the attitude of the viewer, and a control unit configured to control the projection unit to project the corrected video image.

A head mounted display, including at least one display, an image capture device, a light beam generator, and an optical compensation element, is provided. The display has an open area and generates at least one image light beam. The image capture device is disposed by overlapping with the display corresponding to the open area. The image capture device is configured to capture a target area image through the open area. The light beam generator is configured to project at least one light beam to a target area. The target area reflects the light beam to generate at least one reflection light beam. The optical compensation element is configured to convert a transmission direction of the image light beam and enable the reflection light beam to be directly transmitted to the image capture device.

The disclosure provides a method for adjusting pixel values of blending image. The method includes projecting, on a projection surface, a first projection image onto a first projection range and a second projection image onto a second projection range by a first projector and a second projector, and blending the first projection image and the second projection image to generate a blending image; calculating positions of a plurality of boundaries of the first projection range and the second projection range; adjusting a range of an overlapping area between the first projection range and the second projection range; and adjusting image parameters of a non-overlapping area outside the overlapping area, to enable pixel values of the non-overlapping area to be close to pixel values of the overlapping area.

An information generation method including identifying a correspondence relationship between a projector coordinate system and a camera coordinate system, the correspondence relationship identified based on a first image and a second image, the first image projected on a projection target from a projector, and the second image obtained by imaging the projection target using a camera in a state in which the first image is projected on the projection target, displaying, by a display device, a taken image of the projection target which is taken by the camera, receiving a first operation which designates a display area in the camera coordinate system, and generating information for making the projector project a projection image in which a projection object is disposed in the display area designated by the first operation based on the correspondence relationship and information which representing the display area designated by the first operation.

An image displaying method including accepting from a user setting operation of setting a first surface of an object located in a real space as a plane onto which a projection image is virtually displayed, and displaying a first superimposed image in which a setting image showing a plane containing the first surface is superimposed on a captured image generated by capturing an image of the object.

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.

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.

Embodiments of the present disclosure relate to a projection apparatus, a projection system and a projection method. The projection apparatus includes a region selection part, an image calibration part and a projection part. The image calibration part is respectively connected with the region selection part and the projection part. The region selection part is configured to select at least one projective region and send position information of the projective region to the image calibration part, the image calibration part is configured to acquire a relative positional relationship between the projective region and the projection part and calibrate an image to be displayed according to the relative positional relationship, and the projection part is configured to project the calibrated image to be displayed onto the projective region.