Abstract: In one implementation, a method of warping an image is performed by a device including an image sensor, a display, one or more processors, and non-transitory memory. The method includes predicting a capture pose of the device in a physical environment at a capture time and a display pose of the device in the physical environment at a display time. The method includes capturing, using the image sensor, an image of the physical environment during a capture time period including the capture time. The method includes generating a warp definition based on the predicted capture pose and the predicted display pose. The method includes warping, using the one or more processors, the image of the physical environment based on the warp definition. The method includes displaying, on the display, the warped image of the physical environment during a display time period including the display time.

Abstract: The present disclosure relates to techniques for transitioning between imagery and sounds of two different environments, such as a virtual environment and a real environment. A view of a first environment and audio associated with the first environment are provided. In response to detecting a transition event, a view of the first environment combined with a second environment is provided. The combined view includes imagery of the first environment at a first visibility value and imagery of the second environment at a second visibility value. In addition, in response to detecting a transition event, the first environment audio is mixed with audio associated with the second environment.

Abstract: The present disclosure relates to techniques for presenting a combined view of a virtual environment and a real environment in response to detecting a transition event associated with an object in the real environment. While presenting the combined view, if an input of a first type is detected, the combined view is adjusted by increasing the visibility of imagery of the virtual environment and decreasing the visibility of imagery of the real environment. If an input of a second type is detected, the combined view is adjusted by decreasing the visibility of the imagery of the virtual environment and increasing the visibility of the imagery of the real environment.

Abstract: The present disclosure relates to techniques for inserting imagery from a real environment into a virtual environment. While presenting (e.g., displaying) the virtual environment at an electronic device, a proximity of the electronic device to a physical object located in a real environment is detected. In response to detecting that the proximity of the electronic device to the physical object is less than a first threshold distance, imagery of the physical object is isolated from other imagery of the real environment. The isolated imagery of the physical object is inserted into the virtual environment at a location corresponding to the location of the physical object in the real environment. The imagery of the physical object has a first visibility value associated with the proximity of the electronic device to the physical object.

Abstract: In some implementations, a method includes: determining a complexity value for first image data associated with of a physical environment that corresponds to a first time period; determining an estimated composite setup time based on the complexity value for the first image data and virtual content for compositing with the first image data; in accordance with a determination that the estimated composite setup time exceeds the threshold time: forgoing rendering the virtual content from the perspective that corresponds to the camera pose of the device relative to the physical environment during the first time period; and compositing a previous render of the virtual content for a previous time period with the first image data to generate the graphical environment for the first time period.

Abstract: A Head-Mounted Display with camera sensors to perform chroma keying in a mixed reality context is presented. Low latency is achieved by embedding the processing in the HMD itself, specifically, format camera images, detect the selected color range and make a composite with the virtual content.

Abstract: A method includes obtaining a first plurality of image frames that are provided by an image sensor at a first output rate. The method includes determining a GPU temporal processing value characterizing the GPU processing of the first plurality of image frames. The GPU temporal processing value is a function of an amount of information associated with the first plurality of image frames. The method includes determining an operation value associated with the image sensor based on a function of the GPU temporal processing value. The operation value modifies the operation of the image sensor. The method includes changing, using a controller, the operation of the image sensor as a function of the operation value so that the image sensor provides a second plurality of image frames at a second output rate.

Abstract: In some implementations, a method includes: determining a complexity value for first image data associated with of a physical environment that corresponds to a first time period; determining an estimated composite setup time based on the complexity value for the first image data and virtual content for compositing with the first image data; in accordance with a determination that the estimated composite setup time exceeds the threshold time: forgoing rendering the virtual content from the perspective that corresponds to the camera pose of the device relative to the physical environment during the first time period; and compositing a previous render of the virtual content for a previous time period with the first image data to generate the graphical environment for the first time period.

Abstract: In some implementations, a method includes: determining a complexity value for first image data associated with of a physical environment that corresponds to a first time period; determining an estimated composite setup time based on the complexity value for the first image data and virtual content for compositing with the first image data; in accordance with a determination that the estimated composite setup time exceeds the threshold time: forgoing rendering the virtual content from the perspective that corresponds to the camera pose of the device relative to the physical environment during the first time period; and compositing a previous render of the virtual content for a previous time period with the first image data to generate the graphical environment for the first time period.

Abstract: In some implementations, a method of reducing latency associated with an image read-out operation is performed at a device including one or more processors, non-transitory memory, an image processing architecture, and an image capture device. The method includes: obtaining first image data corresponding to a physical environment; reading a first slice of the first image data into an input buffer; performing processing operations on the first slice of the first image data to obtain a first portion of second image data; reading a second slice of the first image data into the input buffer; performing the image processing operations on the second slice of the first image data to obtain a second portion of the second image data; and generating an image frame of the physical environment based at least in part on the first and second portions of the second image data.

Abstract: The present disclosure relates to techniques for transitioning between imagery and sounds of two different environments, such as a virtual environment and a real environment. A view of a first environment and audio associated with the first environment are provided. In response to detecting a transition event, a view of the first environment combined with a second environment is provided. The combined view includes imagery of the first environment at a first visibility value and imagery of the second environment at a second visibility value. In addition, in response to detecting a transition event, the first environment audio is mixed with audio associated with the second environment.

Abstract: The present disclosure relates to techniques for inserting imagery from a real environment into a virtual environment. While presenting (e.g., displaying) the virtual environment at an electronic device, a proximity of the electronic device to a physical object located in a real environment is detected. In response to detecting that the proximity of the electronic device to the physical object is less than a first threshold distance, imagery of the physical object is isolated from other imagery of the real environment. The isolated imagery of the physical object is inserted into the virtual environment at a location corresponding to the location of the physical object in the real environment. The imagery of the physical object has a first visibility value associated with the proximity of the electronic device to the physical object.

Abstract: A Head-Mounted Display with camera sensors to perform chroma keying in a mixed reality context is presented. Low latency is achieved by embedding the processing in the HMD itself, specifically, format camera images, detect the selected color range and make a composite with the virtual content.

Abstract: The invention provides an actuator for actuating a pallet of a pipe organ under the command of a key of an organ. The actuator comprises a movable member, adapted to be connected to the pallet of the organ pipe and a magnetic plunger, mounted on the movable member. It also comprises an electromagnet having a gap within which the magnetic plunger can be inserted and moved, wherein the electromagnet when energized moves the member to thereby actuate the pallet. A controller unit controls a current in the electromagnet to provide a controlled actuation of the pallet that is proportional to a key dip of the key. It also provides for a system based on a digital serial link for controlling an assembly of organ pallets that are actuated by electromagnets.

Abstract: The invention provides an actuator for actuating a pallet of a pipe organ under the command of a key of an organ. The actuator comprises a movable member, adapted to be connected to the pallet of the organ pipe and a magnetic plunger, mounted on the movable member. It also comprises an electromagnet having a gap within which the magnetic plunger can be inserted and moved, wherein the electromagnet when energized moves the member to thereby actuate the pallet. A controller unit controls a current in the electromagnet to provide a controlled actuation of the pallet that is proportional to a key dip of the key. It also provides for a system based on a digital serial link for controlling an assembly of organ pallets that are actuated by electromagnets.

Abstract: The invention provides an actuator for actuating a pallet of a pipe organ under the command of a key of an organ. The actuator comprises a movable member, adapted to be connected to the pallet of the organ pipe and a magnetic plunger, mounted on the movable member. It also comprises an electromagnet having a gap within which the magnetic plunger can be inserted and moved, wherein the electromagnet when energized moves the member to thereby actuate the pallet. A controller roller unit controls a current in the electromagnet to provide a controlled actuation of the pallet that is proportional to a key dip of the key. It also provide for a system based on a digital serial link for controlling an assembly of organ pallets that are actuated by electromagnets.

Abstract: The invention provides an actuator for actuating a pallet of a pipe organ under the command of a key of an organ. The actuator comprises a movable member, adapted to be connected to the pallet of the organ pipe and a magnetic plunger, mounted on the movable member. It also comprises an electromagnet having a gap within which the magnetic plunger can be inserted and moved, wherein the electromagnet when energized moves the member to thereby actuate the pallet. A controller roller unit controls a current in the electromagnet to provide a controlled actuation of the pallet that is proportional to a key dip of the key. It also provide for a system based on a digital serial link for controlling an assembly of organ pallets that are actuated by electromagnets.

Abstract: A self-powered electrical measuring system for measuring current in a high voltage circuit. The system utilizes a Rogowski coreless coil disposed about a conductor for sensing current flowing in the conductor and producing a voltage signal proportional to the magnitude of the current. An electronic conditioning circuit is provided for conditioning the voltage signal for transmission by optical link means to a remote receiver operating which is at ground potential and totally isolated from the measuring system in the high voltage circuit. A floating supply circuit uses a tapping coil, having a magnetic core disposed about the conductor, whereby to produce a supply voltage for the electronic conditioning circuit.

Abstract: The invention relates to a method and a system for measuring residual flux in current transformers. The system comprises a controlled circuit for generating two voltage levels for switching the current flow in the transformer. The switching circuit is connected to one current transformer winding and causes the induction to vary from the residual flux level to a saturation level through successive switching of the current when the voltage is applied across the winding terminals. A processing unit receives a first signal delivered by the switching circuit, such signal being representative of the induction variation for a time corresponding to the time period of the voltage. The processing unit further receives a signal representative of the induction variation caused by the application of the voltage for a second time period.