Content is projected onto the surface of water such that it can be viewed from either above or below the surface. Using distortion mapping, depth sensing, and de-noising, the image can remain unaffected by ripples and allow the user to interact within the body of liquid and/or use it as input. Liquids of different density can be layered on the surface to create different refraction planes. Water currents and jets can be used to actively reduce ripples from user interaction, as well as actively adding or removing liquid from the container to counteract displacement or create effect.

A dynamic projection mapping system includes a projector configured to project visible light. The dynamic projection mapping system also includes a calibration assembly having a sensor configured to detect the visible light projected by the projector and an emitter configured to emit infrared light. The dynamic projection mapping system further includes a tracking sensor configured to detect the infrared light emitted by the emitter. The dynamic projection mapping system further includes one or more processors configured to perform a calibration to align the projector and the tracking sensor based on sensor signals received from the sensor and from the tracking sensor.

The disclosure provides a projection system and a gamma curve correction method. The projection system includes a projection target and a projection device. A test image is projected on the projection target. The projection device obtains a first gamma curve of the test image by receiving the test image projected on the projection target or sensing a light beam of the projected test image, and judges whether multiple difference values between the first gamma curve and a preset gamma curve is larger than a preset value. The first gamma curve is corrected to generate a second gamma curve when at least one of the difference values is larger than the preset value. The projection system and the gamma curve correction method of the disclosure provides an ideal gamma curve according to the output performance of the use situation.

A background display device for a virtual image recording studio that is configured to display, behind a real subject, a representation of a virtual background for a camera recording comprises at least one panel having a plurality of actively illuminating picture elements. The picture elements form a two-dimensional arrangement that extends along a first direction of extent and a second direction of extent oriented perpendicular thereto, wherein a respective spacing, measured along the second direction of extent, of the picture elements from a first reference line that extends rectilinearly along the first direction of extent varies irregularly along the first direction of extent.

In a method of displaying a representation of a virtual background by means of a background display device for a recording by a camera in a virtual image recording studio, the display of the representation of the virtual background takes place in accordance with a time control. The camera further records the display of the representation of the virtual background in accordance with a sequence of exposure times and the time control of the display of the representation of the virtual background and the sequence of exposure times are synchronized with one another.

A background display device for a virtual image recording studio for displaying a representation of a virtual background behind a real subject comprises a control device that comprises a single first control unit and least one second control unit. The first control unit is configured to generate the virtual background, to determine a projection of the virtual background onto the active illumination apparatus, and to transmit at least one section of the determined projection to the at least one second control unit. The at least one second control unit is configured to control the active illumination apparatus to display the at least one section of the determined projection of the virtual background.

An image display apparatus includes a display, an input unit configured to receive input data including an input image in which a first dynamic range is defined and including information relating to luminance of the input image, and at least one processor or circuit for executing tasks of converting the first dynamic range into a second dynamic range having a maximum luminance lower than that of the first dynamic range, acquiring a user set maximum luminance of the second dynamic range, acquiring a maximum display luminance when the display unit displays the maximum luminance of the second dynamic range under a display condition set for the display unit, and generating a setting screen for a user setting. The setting screen displays information indicating a relative relation among the information relating to luminance acquired from the data, the user set maximum luminance and the maximum display luminance.

A three-dimensional display device includes a display panel, a controller, and a communication unit. The display panel is configured to display an image. An optical element is configured to define a propagation direction of image light emitted from the display panel. The communication unit is configured to receive a captured image of first eye and second eye different from the first eye, of a user. The controller causes the display panel to display a calibration image. The controller is configured so that, based on cornea images of different parts of the calibration image in the captured image that are viewed with the first eye and the second eye of the user, respectively, a parallax image is displayed on the display panel.

A projector including a casing, a control system, an image assembly and at least one electric thermal heater is provided. The image assembly is coupled to and controlled by the control system. The electric thermal heater is coupled to and controlled by the control system. The control system is configured to activate the electric thermal heater to preheat the image assembly, such that the image assembly is warmed up to a cut-off temperature. Then, the control system is configured to switch off the electric thermal heater. Then the focal length of the image assembly is adjusted. A focal length adjusting method for the projector is further provided. The projector and the method may be used to avoid the thermal expansion of various elements, so as to avoid focal length shift.

A projection image including a test pattern is projected on a projection surface. The projection image is moved in a first direction. An image of the projection image is captured. A change in the test pattern contained in the projection image the image of which has been captured is detected. When a change in the test pattern is detected, it is determined that the projection image has reached an end of the projection surface.