An evaluation method for an image projection system in which a first projector, a second projector, and a third projector perform stack projection on a screen, the method including acquiring a first image generated by capturing the screen at a first timing, acquiring a second image generated by capturing the screen at a second timing, causing the projection state of the first projector to differ from the projection states of the second projector and the third projector at the first timing, and evaluating whether or not the first projector needs to be adjusted based on the first image and the second image.

A projector including a controller circuit and a shuttle wheel, and an operating method are provided. The controller circuit controls an operation of the projector. The shuttle wheel is disposed on an upper cover of the projector. The controller circuit controls whether the projector enters an on screen display mode according to an operation method of the shuttle wheel. When the projector enters the on screen display mode, the controller circuit controls the projector to project a first menu on a screen. According to the operation method of the shuttle wheel, the controller circuit selects an adjustment item of the projector on the first menu. When the projector does not enter the on screen display mode, the controller circuit controls the projector to project a second menu on the screen. According to the operation method of the shuttle wheel, the controller circuit sets the adjustment item on the second menu.

An electronic apparatus is disclosed. The electronic apparatus includes: a memory storing a first pattern image and a second pattern image, a communication interface comprising communication circuitry configured to communicate with an external terminal apparatus, a projection part including a projection lens, and a processor configured to: control the projection part to project the first pattern image on a screen member comprising a reflector located on a projection surface, and based on receiving a first photographed image which photographed the screen member from the external terminal apparatus through the communication interface, acquire transformation information based on the first photographed image and the first pattern image, control the projection part to project the second pattern image on the projection surface, and based on receiving a second photographed image which photographed the projection surface from the external terminal apparatus through the communication interface, perform color calibration based on the characteristic of the projection surface based on the second photographed image, the second pattern image, and the transformation information.

An apparatus for use in the conduct of cognitive behavior therapy comprises a surround vision system, sets of recorded scenes each set relating to the same theme, each set representing a different level of difficulty to the individual receiving therapy in dealing with the theme; a controller for controlling the displaying images of a set on the screens of the surround vision system; and a command device. The command device is adapted to communicate with the controller and is used by a person overseeing the delivery of therapy to the individual or by the individual receiving therapy for controlling the display of scenes on the surround vision apparatus.

The present disclosure relates to an information processing apparatus and an information processing method for suppressing a decrease in the accuracy of image projection correction. By use of an image projection model using a distortion factor of an fθ lens with an image height of incident light expressed by the product of a focal point distance f and an incident angle θ of the incident light, the posture of a projection section for projecting an image and the posture of an imaging section for capturing a projection plane to which the image is projected are estimated. The present disclosure may be applied, for example, to information processing apparatuses, projection apparatuses, imaging apparatuses, projection imaging apparatuses, projection imaging control apparatuses, or image projection and imaging systems.

A second projector disposed so as to be opposed to a projection surface includes a projection section configured to project second image light on the projection surface on which a base image is displayed, and visibility of the base image on which the second image light is projected is made lower than in a state in which the second image light is not projected on the projection surface.

An image display method includes displaying, on a display surface, a first image based on first image data from a first input source; and establishing a correspondence between a feature of a first marker and the first input source when it is detected that the first marker is placed in a detection area included in the display surface while the first image is displayed on the display surface.

A method of operation of a control device configured to control a plurality of projectors including the steps of making each of the plurality of projectors projects one or more first images based on first image information to a first area, and generating color correction data used to correct a color of images projected by the plurality of projectors based on imaging data generated by a camera imaging the first area where the first images are projected by the plurality of projectors.

Systems and methods for providing a distortion-free pool-surface display beneath a swimmer. In one embodiment, projectors are positioned below a water level at opposite walls of a pool, and are configured to project images to a display surface at the bottom of the pool beneath a swimmer. A camera is used to view images projected by the projectors and to provide corresponding image data to an image correction platform on a graphics processing unit (GPU). The image correction platform identifies distortions in the images, generates image corrections that counter the identified distortions, and applies the corrections to subsequently projected images. The image correction platform also generates image adjustment that cause overlapping portions of the projected images to match seamlessly. The projected images may provide immersive experiences, coaching/training interfaces or other interactive displays.

A driving circuit for driving a light source and a projection device are provided. The driving circuit includes a power converter, a detection circuit, and a control circuit. The power converter provides a driving power to the light source. The detection circuit provides a feedback signal according to a current value of the light source. The control circuit receives an operation command and the feedback signal. The control circuit determines whether the driving circuit enters a light-load state according to at least one of the operation command and the feedback signal. When the driving circuit is determined to enter the light-load state, the control circuit controls the power converter to decrease a current value of the driving power and controls the power converter to increase a switching frequency of the driving power. The driving circuit and the projection device may prevent the light source from flickering under the light-load state.