Abstract: A projection system includes an invisible light projector, an imaging unit, an image generator, and a visible light projector. The invisible light projector projects a predetermined invisible light image onto the object via invisible light. The imaging unit captures an image of the invisible light projected from the invisible light projector. The image generator measures a shape of the object based on the image captured by the imaging unit to generate image data showing image content for projection onto the object in accordance with the measured shape. The visible light projector projects the image content shown by the image data onto the object via visible light. The invisible light projector emits pulsed invisible light to project the measurement pattern. The image generator generates the image data based on an image captured in accordance with a timing for the pulsed light emission.
Abstract: A projector, a method for controlling the same, and a projection system which can improve the resolution more efficiently by pixel shifting are disclosed. The projector controls the degree of modulation in a plurality of optical modulation devices and generates a plurality of optical images. To the plurality of optical images, the projector applies first pixel shifting according to the period and second pixel shifting regardless of the period, and projects a resulting image. The first pixel shifting and the second pixel shifting are different from each other, either in the amount of pixel shifting or the direction of pixel shifting.
Abstract: First ratio acquisition means of a display timing determination device acquires, for each voice, a first ratio that relates to intervals between output timings of voices. Second ratio acquisition means acquires, for each piece of character information, a second ratio that relates to intervals between provisional display timings of pieces of character information. Identification means identifies, based on the first ratio of each voice and the second ratio of each piece of character information, an association relationship between the voice and the piece of character information. Display timing determination means determines a definitive display timing of each piece of character information based on the association relationship.
Abstract: A projection system includes an invisible light projector, a background member, an imaging unit, an image generator, and a visible light projector. The invisible light projector projects a predetermined invisible light image onto the object via invisible light. The background member is disposed behind the object in a direction of the invisible light emitted from the invisible light projector. The imaging unit captures an image of the invisible light projected from the invisible light projector. The image generator measures a shape of the object based on the image captured by the imaging unit to generate image data showing image content for projection onto the object in accordance with the measured shape. The visible light projector projects the image content shown by the image data onto the object via visible light. The background member has a light shielding surface that does not diffusely reflect the invisible light incident thereon.
Abstract: A method is provided for use in a stereoscopic image generating system comprising two cameras, a plurality of memory buffers, and at least one processor. The method comprises: identifying at least one common region of interest (ROI) at images obtained from the two cameras; generating a Look Up table (LUT), for holding displacement values of pixels that belong to the at least one common ROI; forwarding data associated with images obtained from the two cameras that relates to the at least one common ROI, to the plurality of memory buffers; processing output lines retrieved from the plurality of memory buffers and propagating data that relates to a YUV image and associated LUTs, wherein the propagating of the data is carried out at a rate associated with a respective memory buffer from which that data is retrieved; and generating a stereoscopic image based on the propagated data.
Abstract: A projector includes an image projection section adapted to let a light pass through a projection lens to project a projection image on a screen, an end part extraction section adapted to detect end parts of the screen and the projection image, a lens shift adjustment mechanism adapted to move the projection lens, an operation receiving section adapted to receive an operation of moving the projection image, and a control section adapted to move the projection lens so that the projection image moves in a first direction in response to the operation, and the control section changes a moving speed at which the projection image moves in the first direction when an inter-end part distance between the end part of the screen and the end part of the projection image gets within a first range while the control section is moving the projection image in response to the operation.
Abstract: The present invention describes a system for calibrating a plurality of cameras in an area. The system method and device functions by using moving objects to calibrate, in particular using people. In addition, the system implements automatic re-calibration in a specific way to reduce human intervention, cost and time.
November 21, 2018
Date of Patent:
July 9, 2019
Juan Ramon Terven, Brian Bates, Steve Gu, Kaushal Patel
Abstract: A method for notifying a user of a television to save power consumption by a plurality of multimedia devices connected to the television is proposed. When the television presents desired multimedia content based on signals provided by one of the multimedia device, the television detects whether the other multimedia device(s) is (are) providing signals of multimedia content at the same time. Upon detecting that any one of the other multimedia device(s) is providing signals of multimedia content, the television outputs a user-perceivable notification accordingly.
Abstract: The present invention provides a TV power supply, which comprises a main power supply and a voltage conversion circuit electrically connected to the main power supply. The main power supply comprises a first output terminal for outputting a backlight driving voltage and a second output terminal for outputting a motherboard driving voltage. The voltage conversion circuit is configured to convert the backlight driving voltage or the motherboard driving voltage to a standby voltage. The voltage conversion circuit comprises an input terminal electrically connected to the first output terminal or the second output terminal and a third output terminal for outputting the standby voltage.
June 14, 2017
Date of Patent:
July 2, 2019
SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
Abstract: A test system for audio-video device comprises an output control circuit, a sensing circuit, a storage medium and a processor. The sensing circuit detects the sensible conditions of the AVDUT (Audio-Video Device Under Test). The storage medium stores a test script and a verification data set related to the AVDUT, wherein the test script comprises a plurality of test instructions, and each of the test instructions comprises a plurality of test signals. The processor is configured to generate a test sequence related to the test instructions, and outputs a plurality of control signals to the AVDUT through the output control circuit according to the test sequence, and the processor determines whether an abnormal event occurs in the AVDUT according to said sensible conditions, when the abnormal event occurs, the processor determines whether to update the test script according to a comparison result.
December 26, 2018
Date of Patent:
June 25, 2019
AMTRAN TECHNOLOGY CO., LTD.
Kuo Chih Lo, Tung Hsun Tsou, Chin Cheng Liu
Abstract: A vision system may include a first camera and a second camera mounted for stereoscopic monitoring of a work environment, a support platform for support of a workpiece in the work environment, a first reference plate operably coupled to the support platform to provide a first frame of reference for three dimensional location of objects in the work environment, a power tool operable in the work environment under control of a tool controller, and a motion monitor operably coupled to the first and second cameras to determine location of the tool in the work environment based on a comparison of a reference point on the tool to a position of reference points on the reference plate. A perspective view of the support platform by the first and second cameras may be changeable, and the system may further include a second reference plate to define a second frame of reference for three dimensional location of objects responsive to the perspective view of the support platform being changed.
Abstract: A method for processing a digital image for rendering on a display. The image includes image elements associated with color information represented in a colorimetric space having a luminance and chrominance components. The luminance component has a value in a first predetermined interval. The display can render values of luminance components included in a second predetermined interval, of greater length than the first interval. The method includes: determining information representative of image brightness perceived by an observer, based on the values of the first luminance component; calculating an expansion exponent as a function of the determined brightness information; transforming the first luminance components into second luminance components, including calculating an intermediate luminance value by applying the calculated expansion exponent to the first luminance component value and multiplying the intermediate value by the length of the second interval.
Abstract: At least one embodiment of a method of configuring a video source comprising an embedded encoder for generating a stream, in a video-surveillance system comprising virtual encoders generating virtual streams, the method comprising: transcoding a reference stream generated by the video source to generate virtual streams according to distinct encoding configurations of the virtual encoders; for each of the generated virtual streams, computing a similarity distance between the corresponding virtual stream and a reference stream generated by the video source; obtaining a quality indicator relative to a task to be carried out on a stream generated by the video source; selecting an encoding configuration of a virtual encoder based on the computed similarity distances and the obtained quality indicator; and determining at least one configuration parameter value of the encoder of the video source as a function of the selected encoding configuration of the virtual encoder and of a look-up table.
Abstract: An image processing method includes: obtaining, by a first position sensor, a first lens position of a first camera; obtaining, by a second position sensor, a second lens position of a second camera; calculating, by a processing circuit, a relative optical geometry of the first camera and the second camera according to the first lens position and the second lens position; and performing, by the processing circuit, an image switch, an image fusion, or a depth calculation based on the relative optical geometry on the condition that an optical image stabilization is enabled to at least one of the first camera and the second camera.
Abstract: Applying a presentation timestamp to an element of a sequence of sub-titles. A minimum presentation timestamp TMIN of an element of a sequence of sub-titles N is initialized. The presentation timestamp T(N) of the new element of a sub-title sequence N is compared with the minimum presentation timestamp for sub-titles TMIN. The minimum presentation timestamp for sub-titles TMIN is applied to the element of a sequence of sub-titles N if the presentation timestamp T(N) of the new sub-titles element is prior to the minimum presentation timestamp for sub-titles TMIN. The minimum presentation timestamp for sub-titles TMIN for an element of a sequence of sub-titles N+1 is calculated as a timestamp posterior to the presentation timestamp T(N) of the new sub-titles element.
Abstract: A communication terminal includes circuitry. The circuitry is configured to calculate, for each of a plurality of captured-image data items that are obtained by continuous image capturing, a center point of an object detection area of the captured-image data item. The circuitry is further configured to render a heat map image having a gradation of color, the gradation of color of the heat map image being determined based on weighting of colors of the heat map image with the calculated center points of the captured-image data items. The circuitry is further configured to map the heat map image on a captured-image represented by one of the plurality of captured-image data items. The circuitry is further configured to display the captured-image on which the heat map image is mapped.
Abstract: Example embodiments relate to multistage camera calibration. An example embodiment includes a method. The method includes positioning a calibration target relative to a camera. The method also includes capturing a focused image of the calibration target. Further, the method includes determining one or more approximate locations of calibration points of the calibration target within the focused image of the calibration target. In addition, the method includes adjusting the focal length of the camera. Still further, the method includes capturing an unfocused image of the calibration target. Additionally, the method includes determining, based on the one or more approximate locations of calibration points of the calibration target within the focused image of the calibration target, one or more refined locations of calibration points of the calibration target within the unfocused image of the calibration target. Yet further, the method includes correcting for one or more optical aberrations within the camera.
Abstract: Novel tools and techniques are provided for implementing media content streaming or playback, and, more particularly, for implementing media stream synchronization. In some embodiments, a synchronization system might receive a first signal that is output from a first device, which receives an original video signal from a video source and outputs a first video signal. The synchronization system might analyze the first signal to determine a first frame buffer delay, generate a delay adjustment signal based on such determination, and send the delay adjustment signal to a frame buffer delay device. The frame buffer delay device and the first device might concurrently receive the original video signal from the video source. The first delay adjustment signal causes the frame buffer delay device to apply the first frame buffer delay to the original video signal to produce a second video signal that is synchronized with the first video signal.
Abstract: An image display apparatus includes an image reception unit that receives image data from an external device, a display unit that displays an image related to the image data, a setting changing unit that changes, in accordance with an instruction determined in advance, a setting determined in advance, an image determination unit that determines whether or not a prescribed pattern determined in advance is included in the image related to the image data, a storage unit that holds the instruction in association with the prescribed pattern in advance, and a control unit that, when the image determination unit determines that the prescribed pattern is included in the image related to the image data, causes the setting changing unit to change the setting in accordance with the instruction associated with the prescribed pattern.