Abstract: A testing apparatus for a television system is provided. The testing apparatus includes an analysis module, a signal generating module, a transmitting module, a receiving module, and a judging module. The analysis module receives and analyzes a control signal to generate an analysis result. The signal generating module generates a test signal according to the analysis result. The transmitting module transmits the test signal to the television system. The receiving module receives a response signal from the television system. The judging module judges whether the response signal correctly corresponds to the test signal.

Abstract: A system includes a content evaluation device is configured to receive reproduced media content and compare the reproduced media content to reference media content to determine a quality of the reproduced media content relative to the reference media content. The content evaluation device is configured to apply an entropy factor to the determined quality to model human perception of the reproduced media content. A method of determining the entropy factor includes converting the reference media content or the reproduced media content to a grayscale image, counting a number of unique luminance values in the grayscale image, determining the total number of possible luminance values, and defining the entropy factor to be the number of total pixels compared relative to the maximum number of pixels represented by any single luminance value multiplied by the number of possible luminance values.

Abstract: A method, system, and computer-readable storage medium for determining an estimate of sensor sensitivity associated with an image. A noise level of an image is determined, then an estimate of sensor sensitivity associated with the image is automatically determined, e.g., by a trained classifier based on the determined noise level. Additionally, the sensor sensitivity estimate can be used to determine scene brightness.

Abstract: A system may include a media content processing subsystem associated with a subscriber. The media content processing subsystem may be configured to scan at least a subset of channels of a media broadcast to create a spectrum block map; determine a spectrum block of a channel of a media broadcast indicated as being a troubled channel; and identify, according to the spectrum block map, at least one additional channel of the media broadcast included in the spectrum block of the troubled channel.

Abstract: A video window detector includes a region characteristic determiner to generate at least one characteristic value for at least one region of a display output; a characteristic map generator to generate an image map from the at least one characteristic value for at least one region of the display output; and a window detector to detect at least one video window dependent on the image map.

Abstract: Aspects of the present invention are related to systems, methods and apparatus for calibration of multiple display apparatus in a display ensemble.

Abstract: Systems and methods are described for determining a set of three quality metrics for audio and/or video signals transmitted through a packet network. The set of three metrics provide more insight into which factors are affecting the quality of the received signal as perceived by the end-user. These three quality metrics measure reductions in quality due to lossy media transmission, packet loss concealment from packet loss and/or packet/frame jitter, and long periods of silence and/or frozen video. Because each metric quantifies a different aspect of transmitted quality, a deficiency in the transmitted signal can be identified by reference to the set.

Abstract: Accurately estimating the image quality of video is still difficult, especially when there is no reference video available. A method for determining a quality measure for a video image comprises selecting a measuring point, such as a MB, determining a context area around the measuring point, calculating a variance of pixel values in the context area, calculating a variance of pixel values in the measuring point, calculating a relation between the two variances of pixel values, and averaging said relations for a plurality of measuring points, wherein a quality measure for a video image is obtained.

Abstract: A system, such as a satellite reception assembly or customer premises gateway, may comprise an analog-to-digital converter operable to digitize a signal spanning an entire television spectrum (e.g., cable television spectrum or satellite television spectrum) comprising a plurality of television channels. The system may comprise a signal monitor operable to analyze a signal to determine a characteristic of the signal. The system may comprise a data processor operable to process a television channel to recover content carried on the television channel. The system may comprise a channelizer operable to select first and second portions of the signal, and concurrently output the first portion to the signal monitor and the second portion to the data processor.

Abstract: A test apparatus for testing a video processing apparatus comprises means for receiving from the video processing apparatus a video output representative of a test sequence, the test sequence comprising a plurality of frames, each frame comprising an image of a respective different one of a plurality of frame identifiers; means for obtaining a sequence of sets of frame data from the video output, each set of frame data representative of a frame; and means for processing each set of frame data to determine the frame identifier for that frame.

Abstract: Aspects of the present invention are related to systems, methods and apparatus for automatic quality assessment of a video sequence. According to a first aspect of the present invention, a quality index may be generated by combining a spatial quality index and a temporal quality index. According to a second aspect of the present invention, a spatial quality index may be calculated using a modified exponential moving average model to pool multi-scale structural similarity indices computed from test frame—reference frame pairs. According to a third aspect of the present invention, a temporal quality index may be generated by averaging multi-scale structural similarity indices computed from difference image pairs, wherein one difference image is formed between reference frames and another difference image is formed between a reference frame and a test frame.

Abstract: A network device may be configured to receive video quality data that includes information corresponding to a delivery of video content from a content source to a user device via a network and information corresponding to video presentation conditions corresponding to the user device. The network device may also be configured to determine video quality metrics based on the video quality data. Each of the video quality metrics may correspond to a characteristic of the delivery of the video content from the content source to the user device or the video presentation conditions corresponding to the user device. The network device may also be configured to determine, based on the video quality metrics, a video quality score that corresponds to an estimated user viewing experience corresponding to the video content. The network device may also be configured to communicate the video quality score to an operator of the network.

Abstract: Disclosed is an image projecting device, including a projecting part configured to project an image for calibration onto a projection object, an image capturing part configured to capture an image of an area including the projection object with a projected image for calibration, a binary image producing part configured to calculate plural first thresholds corresponding to plural first divided areas provided by dividing the area, based on a captured image, and to produce a binary image of the captured image, based on the first thresholds, and a corresponding point sampling part configured to sample corresponding points between the image for calibration and the binary image.

Abstract: The invention is made in the technical field of video quality measurement. More precisely, the invention is related to mean observer score prediction using a trained semi-supervised learning regressor. That is, a method and apparatus for measuring video quality using a semi-supervised learning system for mean observer score prediction is proposed. Said semi-supervised learning system comprises at least one semi-supervised learning regressor and said method comprises training the learning system and retraining the trained learning system using a selection of test data wherein the test data is used for determining at least one mean observer score prediction using the trained learning system and the selection is indicated by a feedback received through a user interface upon presenting, in the user interface, said at least one mean observer score prediction. Doing so, prediction quality can be improved after re-training at least for the selection.

Abstract: A hyperspectral method for detecting the present condition of an avian egg is disclosed in which a neural network algorithm is used to compare the spectrum of a test egg against a spectral library. The method can detect fertility with greater than 90% reliability on the day of laying and the gender of the chick with greater than 75% reliability on the 12th day after laying.

Abstract: Embodiments include systems and methods for objectively grading/rating a display. One embodiment may take the form of a method for grading display quality including capturing an image of the display and computing first and second parameter values from the captured image. The method also includes comparing the first parameter value against a threshold and, if the first parameter value exceeds the threshold, computing a grade wherein the second parameter is given a first weighting. If, however, the first parameter value is below the threshold, the method includes computing a grade wherein the second parameter is given a second weighting which is greater than the first weighting.

Abstract: A digital television receiver includes smart antenna signaling that sends, to a smart antenna configuration, data specifying reception directions available to the smart antenna. The receiver includes an event monitor that detects a predetermined event, and a smart antenna configuration estimator that, in response to the detected event and for each of a current reception direction and available reception directions adjacent on either side of the current reception direction, to obtain an estimate and the maximum value of a channel impulse response from the receiver, to calculate an average value of the channel impulse response, including channel impulse response values for additional signal paths. The estimator calculates a respective quality value as the ratio of the maximum value to the average value of the channel impulse response. The receiver also includes a selector that selects a direction corresponding to the largest respective quality value as a new reception direction.

Abstract: A method is for monitoring the electrical integrity of lines of photosites of an imaging device with matrix array of photosites. The control lines of photosites may include for each line of photosites an emission of elementary electrical control signals for the photosites of the line. The method may include diagnosis of the elementary electrical control signals emitted.

Abstract: Systems and methods of objective video quality measurement based on support vector machines. The video quality measurement systems can obtain information pertaining to features of a target training video, obtain corresponding information pertaining to features of a reference version of the target training video, and employ the target training features and/or the reference training features to build video quality models using such support vector machines. Based on the target training features and/or the reference training features used to build such video quality models, the video quality models can be made to conform more closely to the human visual system. Moreover, using such video quality models in conjunction with target features of a target video whose perceptual quality is to be measured, and/or reference features of a reference video, the video quality measurement systems can be employed to predict measurements of the perceptual quality of such a target video with increased accuracy.

Abstract: Preferably, seven classes of observers are defined, according to different sets of Colour Matching Functions. By displaying specific colour patches of a classification chart using colour display devices having different sets of primaries, and by asking an actual observer to compare his perception of the same colour as displayed on each colour display device, the method allows assigning said observer his specific class. It is proposed a specific apparatus to implement this method.

Abstract: A method of generating a measure of quality for a video signal representative of a plurality of frames, the video signal having: an original form; an encoded form in which the video signal has been encoded using a compression algorithm utilising a variable quantiser step size such that the encoded signal has a quantiser step size parameter associated therewith and utilising differential coding such that the encoded signal contains representations of the prediction residual of the signal; and a decoded form in which the encoded video signal has been at least in part reconverted to the original form, the method comprising: a) generating a first quality measure which is dependant on said quantiser step size parameter according to a predetermined relationship; b) generating a masking measure, the masking measure being dependant on the spatial complexity of at least part of the frames represented by the video signal in the decoded form according to a first predetermined relationship; and c) generating a combined m

Abstract: The present invention discloses an apparatus, a method and a computer program for mapping and allocating available television white space channels for a terminal requesting resources. The mapping is based on the data of available overlapping TV white space channels within a geographical tracking area and coexistence with other cellular secondary systems within the area. Furthermore, a location for a moving mode II device may be tracked periodically. The geo-location accuracy of the mode II device affects the TV white space resources which can be allocated to the device.

Abstract: A testing system including a preset display device, preset shutter glasses and a testing device is disclosed. The preset display device generates a synchronization signal and outputs a timing signal relating to the synchronization signal. The preset shutter glasses receive the synchronization signal to generate a masking signal. The testing device processes the timing signal and the masking signal according to a setting signal and determines whether the preset shutter glasses are normal according to the processed result.

Abstract: The present invention relates to systems and methods for inverse telecine or video de-interlacing for picture quality improvement on set-top-box and TV products. The system comprises a film mode detector at the picture or sequence level, a global mixed video and film content detector at the region, picture, or sequence level on top of the detected film content, and a local video content detector at pixel level on top of the detected mixed video and film content. Inverse telecine processing is applied on detected film content fading in with a locally de-interlaced local video content. The invention further provides an apparatus and method for globally detecting mixed video and film content at region, picture, or sequence level. Such apparatus and method comprise a plurality of detectors for robustness and increased detection accuracy.

Abstract: A method and system that configures an HDMI source device to use initial output parameters for communicating with an HDMI sink device, detects an abnormal operation performed by the HDMI sink device, selects a test of the HDMI sink device, applies the test, evaluates a result to determine whether the test produces a desired result, and modifies the initial output parameters to create revised output parameters. When the test produces the desired result, the revised output parameters will enable the HDMI sink device to produce the desired result. When the test fails to produce the desired result, the revised output parameters are conservative parameters that fail to produce the abnormal operation. The method reconfigures the HDMI source device to use the revised output parameters for communicating with the HDMI sink device, and saves the revised output parameters.

Abstract: An image processing apparatus includes a projecting unit configured to project an image; an image capturing unit configured to capture the projected image to generate a captured image; an area identifying unit configured to identify a high-lightness area and a low-lightness area of the captured image; and a correcting unit configured to correct a lightness of the projected image in a manner that gradually changes the lightness of the high-lightness area of the captured image obtained by projecting a white image to the lightness of the low-lightness area of the captured image and sets the lightness thus changed as the lightness of the projected image. The projecting unit projects the projected image having the corrected lightness and an image to prompt a user for a response to the change in the lightness of the projected image.

Abstract: A display apparatus is disclosed. The display apparatus includes a display unit which displays a calibration screen divided into a plurality of areas when a calibration mode is initiated, an image generating unit which generates a guide image for displaying an arrangement position of a calibrator, and a controlling unit which controls the display unit to display a guide image on areas where calibration is to be performed of the plurality of areas. Accordingly, it becomes possible to improve user convenience and exactness of calibration.

Abstract: A visual source management system that allows simultaneous preview and control of multiple video sources and/or streams of content is provided. The processors feature easy, fast, and independent control over video and audio outputs with or without content protection. Display systems provide a number of useful configurations to allow multitasking as well as simultaneous high performance preview for easy intuitive selection of video sources for TV, television, computing, Internet, streaming, or applications.

Abstract: A multi-camera system and method of calibrating the multi-camera system uses at least one timer to synchronize cameras of the multi-camera system with respect to time. The cameras are used to capture images of the at least one timer. The images are then analyzed to adjust an image-capture timing parameter of at least one of the cameras to time synchronize the cameras.

Abstract: Systems and methods of objective video quality measurement that employ a reduced-reference approach to video quality measurement. Such systems and methods of objective video quality measurement can extract information pertaining to one or more features of a target video whose perceptual quality is to be measured, extract information pertaining to one or more features of a reference video, and employ one or more prediction functions involving the target features and the reference features to provide a measurement of the perceptual quality of the target video.

Abstract: Technologies are generally described for projecting structured light patterns onto an Augmented Reality (AR) scene in order to track AR camera motion in AR systems. In some examples, structured light patterns may be projected onto the AR scene from a light source in the same plane as the AR camera in order to preserve a consistent reference point for detecting the structured light pattern. The AR camera may detect the structured light patterns and determine the location of the AR camera based on a distance analysis of the detected structured light patterns. Based on the changing locations of the AR camera, the system may track the movement of the AR camera as its location relative to the AR scene changes.

Abstract: Methods and apparatus are described for assessing the video image decoding quality of a set top box (STB), television receiver or other video device. Moving video testing of video delivery hardware in a manufacturing environment uses a video sequence that has reference characteristics embedded in the visible portion of the video signal from frame to frame. Each frame of the video is analyzed for distortions of the embedded reference objects, and the reference objects are allowed to move from frame to frame. The reference objects are located through the use of a background that is easily discriminated from the objects and by the use of frame templates that locate the reference information in the frame.

Abstract: A multi-directional SFR measurement system includes a rotatable test fixture located within an enclosure. Mounted on the test fixture is a test key for holding a camera module under test, a collimating lens, and a target/light source panel that provides a visible target for imaging by the camera module. A controller box located outside of the enclosure allows an operator to command the system to rotate the test fixture to a desired angle and capture an image of the target with the camera module under test. The system also includes an angle indicator to indicate the rotational angle of the test fixture and an air pressure controller/indicator to control and indicate the air pressure of the system used for positioning the collimating lens relative to the test fixture.

Abstract: The present disclosure relates to a system and method for monitoring audio-video (AV) streams transported over a network. The system may include an AV probe deployed between an AV tuner and AV destination customer premise equipment. The AV probe may receive an incoming AV stream. The AV probe may generate a thumbnail stream by capturing thumbnails of the incoming AV stream. The AV probe may transmit, substantially in real-time, the thumbnail stream to a monitoring engine and the incoming AV stream to the AV destination customer premise equipment.

Abstract: Embodiments of the present invention include circuits and methods for calibrating position displacement in a voltage controlled actuator. In one embodiment, a calibration circuit comprises an actuator having a control terminal for receiving a programmable control voltage to set a displacement, a switch that selectively decouples said programmable voltage from said control terminal and couples a reference current to said control terminal when the control terminal is decoupled from said control voltage, a comparator that senses a voltage difference between said control voltage and said control terminal, and a timer coupled to an output of the comparator. The timer measures a time period required to increase the control terminal voltage. The capacitance of the actuator may be determined and used to calibrate the position of the actuator.

Abstract: The present disclosure relates to calibration assemblies and methods for use with an imaging system, such as an endoscopic imaging system. A calibration assembly includes: an interface for constraining engagement with an endoscopic imaging system; a target coupled with the interface on as to be within the field of view of the imaging system, the target including multiple of markers having calibration features that include identification features; and a processor configured to identify from first and second images obtained at first and second relative spatial arrangements between the imaging system and the target, respectively, at least some of the markers from the identification features, and using the identified markers and calibration feature positions within the images to generate calibration data.

Abstract: A video object detecting apparatus enables a user to not only simply watch the video but also to explore a video using a motion and a posture of the user. In addition, the user may manipulate the video using body motion instead of general input units such as a mouse and a touch system. Also, a video object deforming apparatus enables the user to recognize a difference in motions between an interactive video and the user, and provides the user with a video reflecting the difference.

Abstract: Embodiments of the present invention provide a “disparity cursor” for easily measuring disparity within a selected region of a 3D image under test. In operation, a user places a window that defines the disparity cursor over a selected region of the 3D image under test using a mouse, keyboard, or other user-interface device. An average disparity value for the image segments contained within the window is then automatically calculated and reported to the user.

Abstract: A parameter detector sends at least one test signal to a display and receives at least one detected display parameter from a remote control device in proximity of the display. A content parameter analyzer retrieves at least one content parameter from content to be sent to the display. A parameter comparator then compares the detected display parameter to the content parameter and adjusts outgoing content signals based on the content parameter but in accordance with the detected display parameter. The parameter comparator provides at least one suggested display parameter adjustment when the content parameter is beyond the detected display parameter. The suggested display parameter can be transmitted using a video and/or an audio signal.

Abstract: An apparatus for calibrating an audio-visual (AV) signal includes a controller for generating a control signal, a controllable filter for selectively filtering the AV signal in response to the control signal to output either the AV signal or a filtered AV signal; and a calibrator for generating a group of calibrating coefficients according to the filtered AV signal and calibrating the AV signal according to the group of calibrating coefficients.

Abstract: The invention relates to a method for measuring Hum on a digital QAM carrier using a testing device for testing digital TV signals including a QAM demodulator therein, and to a testing device implementing the method. A controller is used to sample a register associated with a final AGC stage in a QAM demodulator, and to process the collected register values to obtain one or more Hum characteristics. In one embodiment, a circular buffer is used to collect aligned sequences of AGC samples that have a pre-determined feature of time-domain Hum at a specified position therein. The aligned AGC sequences are then correlated to assess causes of Hum.

Abstract: A method and an apparatus for generating a calibrated projection is provided. The method for example includes the following steps: a) providing a projection surface for the projection of at least one image, wherein the projection surface includes a calibrating structure following its spatial extension, which has a first side and a second side, which extends parallel to the first side, and a constant height as measured in direction of the first or the second side; b) generating an image of the calibrating structure in an image plane by means of a camera; c) reconstructing the spatial extension of the projection surface in the region of the calibrating structure; d) generating a projection calibrated with respect to the calibrating structure by using the spatial extension of the projection surface reconstructed according to step c).

Abstract: Embodiments of the present invention provide a method, an apparatus, and a system for evaluating video quality. In the embodiments of the present invention, a method in the prior art that the video quality is determined only according to the number of lost packets and a packet loss rate is modified, and the location of the most important lost packet is determined by analyzing the influence of the lost packet on other packets, and a damage degree or degree of intactness of the video frame is determined according to the most important lost packets, so as to determine the quality of the video frame. The method greatly improves the precision for evaluating the video quality.

Abstract: The present invention is related to the field of electronic engineering and computing. In particular, the present invention refers to a manager device for tests related to the Brazilian digital TV (DTV) standard in hardware adapted for DTV and a device for tests related to the Brazilian digital TV standard (ISDB-Tb standard) in its interactivity aspects.

Abstract: A DTV pilot sensor generates DTV pilot tone detection decisions associated with monitored television band channels without knowledge or estimation of a noise level of the monitored channel.

Abstract: According to the present invention, a mobile electronic device includes: a housing; a projecting unit for projecting an image, the projecting unit being mounted on the housing; a detecting unit for detecting a positional relation between the projecting unit and a projection surface on which an image projected by the projecting unit is to be displayed; a position changing unit for changing a position of the housing; and a control unit for controlling the position changing unit on the basis of the positional relation between the projecting unit and the projection surface detected by the positional-relation detecting unit.

Abstract: Redistribution of multimedia signals or the like within a service area is performed by identifying one or more pieces of white space in the VHF/UHF spectrum, selecting a carrier frequency for each piece of white space spectrum, parsing the signal into a like number of components and modulating each component over a carrier frequency. The receiving device performs the reverse operation for reconstructing the signal.

Abstract: Systems and methods for analyzing the performance of a digital network include capturing a stream of digital data, e.g., interne protocol (IP) packets, that represent streaming video, identifying which of the IP packets include bit errors, determining to which of a plurality of pixels the IP packets including bit errors belong and identifying such pixels as corrupted pixels, and illuminating only the corrupted pixels on a display of a tool. Corrupted pixels in different time blocks can be displayed with different colors to gain a better appreciation of the bit error rate over time.

Abstract: Systems and methods of perceptual quality monitoring of video information, communications, and entertainment that can estimate the perceptual quality of video with high accuracy, and can be used to produce quality scores that better correlate with subjective quality scores of an end user. The systems and methods of perceptual quality monitoring of video can generate, from an encoded input video bitstream, estimates of one or more quality parameters relating to the video, such as the coding bit rate parameter, the video frame rate parameter, and the packet loss rate parameter, and provide these video quality parameter estimates to a predetermined video quality estimation model. Because the estimates of the video quality parameters are generated from the encoded input video bitstream as it is being received, the systems and methods are suitable for use as QoE monitoring tools.

Abstract: The present invention provides a system for detecting and analyzing at least one of an electric field and an electromagnetic field. The system includes a micro/nanomechanical oscillator which oscillates in the presence of at least one of the electric field and the electromagnetic field. The micro/nanomechanical oscillator includes a dense array of cantilevers mounted to a substrate. A charge localized on a tip of each cantilever interacts with and oscillates in the presence of the electric and/or electromagnetic field. The system further includes a subsystem for recording the movement of the cantilever to extract information from the electric and/or electromagnetic field. The system further includes a means of adjusting a stiffness of the cantilever to heterodyne tune an operating frequency of the system over a frequency range.