Abstract: An image/video may be analyzed to determine quality of its attributes, including local, global and pixel colorfulness, sharpness, and contrast to obtain an image quality measure. Invented quality may be obtained for captured images or videos and compared to a database or reference value of quality measures to identify quality of products, component anomalies, and product matches.

Abstract: The invention allows detecting which graphics, if any, have been added to the video signal at any given time by utilizing only the various signals provided by prior art hardware. A first video signal, graphics signal(s), and a second video signal are received. It is then determined which graphics, if any, are present in a given frame of the received second video signal based on comparing actual values of pixels of the received second video signal and calculated values of pixels derived from the first video signal, and the graphics signal(s), and the combination of graphics signal(s) which produces the best match is searched for.

Abstract: Various arrangements for testing video decoder device functionality are presented. A video frame decoded by a video decoder device under test may be received. The received video frame may be segmented into a plurality of blocks. A first value may be calculated for a first block of the plurality of blocks of the received video frame using pixel values of pixels present within the first block. The first value may be compared to a first reference value. The first reference value may correspond to a first reference block of one or more reference frames. Video decoder functionality of the video decoder device may be determined to be functional at least partially based on comparing the first value to the first reference value.

Abstract: A device for testing an optic which is mountable thereon and has a central axis extending in the longitudinal direction thereof, comprising a test image, a test image table for supporting the test image, a light source for lighting the test image via the optic mountable thereon, an attaching device for mounting the optic mountable thereon, detection means placed on the attaching means for detecting the lighted test image, first guide means and second guide means co-acting with the first guide means and extending in longitudinal direction thereof for the purpose of positioning the test image table along a substantially straight line relative to the attaching device, and a signal processing device for receiving, storing and comparing detection values of the lighted test image detected by the detection means to threshold values therefor specific to the optic and prestored in a database, whereby the optic can be tested quickly and without personal influences, with a reliable test result.

Abstract: An image projecting system includes a master apparatus and an image projecting apparatus connected through a network. The master apparatus generates a correction parameter for correcting distortion caused in captured calibration image data of the image projecting apparatus, using the captured calibration image data and characteristic information of the image projecting apparatus. The image projecting apparatus corrects distortion using the correction parameter generated by the master apparatus to project a corrected projection image on the projection surface.

Abstract: A system for analyzing video signals generated by an imaging modality is disclosed. The system includes a video signal input port to which a signal output of the imaging modality being can be connected. Additionally, there is a central processor that includes an analog input module, a signal analysis module, and a data communications module. A plurality of video signal parameters may be measurable from the video signal by the signal analysis module. The system also includes a data output port that is linked to the data communications module of the central processor, which is connectable to an external device for transferring the measure signal parameters thereto.

Abstract: In a video display apparatus A, a controller 9, while displaying video processed by a video processor 4 on a video display 3, displays LUTs 45R, 45G, and 45B which are tables of correction data for correcting luminance levels of red, green, and blue respectively. The controller 9 re-calculates and rewrites the correction data based on one adjustment point or two or more adjustment points P1 and P2 adjusted by the user.

Abstract: Systems, methods, and computer readable media for media management provide a derived quantitative data of quality for video media files. The method embodiment comprises receiving a request for a video media file, identifying one or more video media files associated with the request, measuring at least one audio or visual quality associated with each video media file by analyzing at least one of: compression artifacts or grading for the each video media file, generating quantitative data based on the measured at least one audio or visual quality for the each video media file, and returning the quantitative data associated with the each video media file. Other features include the ability to compare, archive, filter, sort and select video media files based on the quantitative data.

Abstract: A method and a system for the operation of a geolocation database comprising a spatiotemporal spectrum map comprising of white space spectrum occupancy and/or white space spectrum underutilization data, wherein a) at least one white space spectrum sensor takes measurement data remote from the geolocation database; b) the measurement data are transmitted to the geolocation database; c) the spatio-temporal spectrum map and/or its parameters and/or decisions based on this spectrum map are modified in dependence of the measurements received by the geolocation database.

Abstract: Embodiments are directed to systems and methods for blind image deconvolution. One method of blind image deconvolution comprises capturing a video using an imaging device and measuring a sharpness degradation metric for the video. The method further comprises determining parameters of a point spread function (PSF) corresponding to the sharpness degradation metric using a predetermined equation and performing deconvolution on at least one frame of the video using the PSF and the determined parameters.

Abstract: A method and system that assesses video quality of transmitted video packet signals suffering from packet loss and delay. This packet loss and delay can create freeze events, which are observed as a jerkiness while viewing the video. The system and method compares the frames in a video transmission to determine freeze events; extracts a set of features from the locations of the freeze events and decoded video frames; and maps the set of features into a video quality score using a neural network. The video quality score provides an assessment of the effects of irregular frame freezes due to packet loss or delay on the quality of the video.

Abstract: One aspect of the disclosure directs to a signage device, which include a display device, a camera, and a signage controller. The display device is configured to display media content in a display mode and display diagnostic information in a diagnostic mode. The diagnostic information includes content operational and deployment information related to the media content being displayed, and system information of the signage device. The signage controller is configured to control the camera to capture an image frame, process the captured image frame to generate information for a server system such that the server system provides the media content to the signage controller based on the generated information, display the media content on the display device in the display mode, switch the display device to the diagnostic mode in response to a diagnostic input command, and display the diagnostic information on the display device in the diagnostic mode.

Abstract: Method, device and computer program product for estimating quality of a video signal, wherein frames of the video signal are received at receiving means of the device, each frame comprising a plurality of blocks of pixels. A section of a first frame of the video signal, which is correctly received, is used to provide a concealed block for use in place of a block of a second frame of the video signal. A difference measure is determined indicative of a difference between at least some of the pixels surrounding the block in the second frame and the corresponding pixels surrounding the section in the first frame. The difference measure is used to estimate the quality of the second frame of the video signal.

Abstract: A method of measuring the video acuity of a physical imaging system is disclosed. A chart comprising an image of a set of test symbols is provided. The set of test symbols comprises a plurality of symbols repeated at a plurality of symbol sizes. A digital image of the chart is obtained using the imaging system. The digital image is cropped to obtain a set of cropped images comprising individual digital images of each test symbol in the set of test symbols. A template image of a test symbol is aligned with a test image comprising one member of the set of cropped images. The template image comprises a digitally generated image of the test symbol in the test image. The normalized correlation between the aligned template image and the test image is determined. The test symbol whose template image has the highest correlation with the test image is identified.

Abstract: Scene-based people metering for audience measurement is disclosed. Example methods disclosed herein include grouping successive image frames depicting a location of a media presentation to form a sequence of scenes, respective scenes including respective groups of the image frames. Such example methods also include grouping matching scenes into respective scene clusters having respective sizes, the scene clusters being represented by respective key frames. Such example methods further include assigning respective ranks to the key frames of the respective scene clusters, the respective ranks being determined based on the respective sizes of the scene clusters. Such example methods additionally include processing the key frames in accordance with the respective ranks to monitor an audience of the media presentation.

Abstract: The present document related to a method and apparatus for transceiving a signal capable of verifying the validity of an available channel in a wireless communication system. According to the present invention, a scheme for transceiving available channel information, a scheme for requesting/responding to a channel validity inquiry, and a scheme for transceiving a contact verification signal are provided, and accordingly, a scheme for supporting the accurate and efficient operation of an unlicensed device while protecting a licensed device in a whitespace band is provided.

Abstract: A user terminal device, a server device, a system and a method for assessing quality of media data are described. The user terminal device is used for extracting artifact features from the media data and for communicating the features to the server device which is then used for determining a quality score using the artifacts and an artifact/quality score database accessible by the server device. The score, transmitted to the user terminal device, is presented to a user from which a subjective quality score and a request for re-determination are received which the user terminal device communicates to the server device. This in turn is used for re-determining the quality score and for transmitting back the re-determined quality score wherein the quality score is re-determined using the received artifacts, the received subjective quality score and the artifact/quality score database.

Abstract: Displaying video on a video display device is disclosed. A first video stream from a first video streaming source is displayed on the display device. A second video stream from a second video streaming source is processed on the display device without displaying the second video stream. Displaying the first video stream is ceased and instead the second video stream is displayed. Supporting operations on a video stream is also disclosed. At least one video chunk is received at a first granularity. A determination is made that an operation is to be performed at a different granularity. At least one video chunk is requested at the different granularity.

Abstract: A method and device for light parameter measurement, a method for screen adjustment and an electronic device are provided. A current image parameter corresponding to a type of a parameter to be measured obtained by a camera under a first operation mode is acquired, a light parameter value corresponding to the current image parameter is determined based on a preset correspondence between an image parameter and a light parameter, and the light parameter value corresponding to the current image parameter is taken as a current light parameter.

Abstract: An example system in accordance with aspects of the present disclosure includes a controller and a camera communicatively coupled to the controller to capture an image of a work surface. A projector is also provided and is coupled to the controller to project an illumination pattern onto the work surface during image capture by the camera.

Abstract: Various arrangements for testing video decoder device functionality are presented. A video frame decoded by a video decoder device under test may be received. The received video frame may be segmented into a plurality of blocks. A first value may be calculated for a first block of the plurality of blocks of the received video frame using pixel values of pixels present within the first block. The first value may be compared to a first reference value. The first reference value may correspond to a first reference block of one or more reference frames. Video decoder functionality of the video decoder device may be determined to be functional at least partially based on comparing the first value to the first reference value.

Abstract: A method for dynamically calibrating rotational offset in a device includes obtaining an image captured by a camera of the device. Orientation information of the device at the time of image capture may be associated with the image. Pixel data of the image may be analyzed to determine an image orientation angle for the image. A device orientation angle may be determined from the orientation information. A rotational offset, based on the image orientation angle and the device orientation angle, may be determined. The rotational offset is relative to the camera or orientation sensor. A rotational bias may be determined from statistical analysis of numerous rotational offsets from numerous respective images. In some embodiments, various thresholds and predetermined ranges may be used to exclude some rotational offsets from the statistical analysis or to discontinue processing for that image.

Abstract: Techniques for calibrating spatial uniformity of light emitted by a light source include receiving light from a unit under test with an array of photo detectors. Sampling circuitry receives an output signal generated by each of the photo detectors in response to the received light, and samples each of the output signals to generate a sampled output signal for each of the photo detectors. One or more processors determine a spatial uniformity measure of one or both of luminous intensity and chromaticity for the received light using the sampled output signals.

Abstract: Representative implementations of devices and techniques provide dynamic calibration for imaging devices and systems. A reference pixel is arranged to receive an electrical reference signal and to output a calibration signal. The reference signal may be based on imaging illumination.

Abstract: A method, apparatus and computer program product are provided to facilitate calibration of an audio playback system with a video presented upon a display. In the context of a method, an image including a display from a first location is received. The method also includes determining a dimension of the display within the image and determining an angle of the display based upon the dimension of a display determined within the image and the first location. The method further includes permitting an audio playback system associated with the display to be calibrated, such as with a video to be presented upon the display, based upon the determined angle. A corresponding apparatus and computer program product are also provided.

Abstract: A method and apparatus that tests video quality includes a superimposing of at least one code to a video that is to be transmitted by a communication device to another communication device. The at least one code is transmitted such that the superimposed at least one code is extractable and readable from the decoded video by the device that receives the transmitted video. The extracted at least one code may then be read to determine the quality level of the transmitted video. The determination of quality for the received video may be based upon one or more tests performed using at least one code extracted from the received video.

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: Provided is a monitoring camera apparatus that can pick up, when an image of a signal lamp of a traffic signal is picked up by a monitoring camera at night, an image of an image pickup region other than the signal lamp bright without saturating a red signal lamp. The monitoring camera apparatus includes signal controlling means including RGB ratio detecting means for detecting lighting, lighting/extinguishing times, the shape and the number, or signal lamp control signals of signal lamps of a traffic signal in the image pickup region and detecting ratios of RGB signals of the signal lamps, gain controlling means for controlling a gain of the RGB signals, and color mixture controlling means for controlling color mixtures of respective signal lamp colors.

Abstract: A diagnosis unit for an electronic camera comprises a housing and a coupling device for coupling the diagnosis unit to an objective connection of a camera or to a camera objective, wherein the coupling device surrounds a light exit opening of the housing. The diagnosis unit further comprises at least one light source arranged in the housing for outputting a diagnosis illumination through the light exit opening, and an interface for electrically connecting the diagnosis unit to a camera. A camera system comprises a diagnosis unit and an electronic camera having an image sensor.

Abstract: In an audio-video process chain where measurements are taken between process stages, each measurement is converted to a threshold confidence by normalizing where required and comparing with a threshold value of acceptability taking into account the latitude of acceptability associated with that threshold and an error function relating to the reliability of the measurement. That threshold confidence extends linearly between a value denoting certainty of acceptability and a value denoting certainty of unacceptability.

Abstract: A server device is configured to store quick code information, where the quick code information includes a particular operation of a group of operations and a particular condition code of a group of condition codes; receive diagnostic information from a video client, of a group of video clients, where the diagnostic information includes a condition code that corresponds to a condition associated with the video client; determine that the condition code matches the particular condition code of particular, stored quick code information; determine, from the particular quick code information, the particular operation corresponding to the particular condition code; perform an automatic remote repair to remedy the condition, on the video client, based on the particular operation; and send, to the video client, a notification that the condition has been remedied based on the automatic remote repair when the automatic remote repair remedies the condition on the video client.

Abstract: A method, system and reference target for estimating spectral data on a selected one of three spectral information types is disclosed. Spectral information types comprise illumination of a scene, spectral sensitivity of an imager imaging the scene and reflectance of a surface in the scene. The method comprises obtaining a ranking order for plural sensor responses produced by the imager, each sensor responses being produced from a reference target in the scene, obtaining, from an alternate source, data on the other two spectral information types, determining a set of constraints, the set including, for each sequential pair combination of sensor responses when taken in said ranking order, a constraint determined in dependence on the ranking and on the other two spectral information types for the respective sensor responses and, in dependence on the ranking order and on the set of constraints, determining said spectral data that optimally satisfies said constraints.

Abstract: A device may operate a first image-capture system to capture first image data of a scene. While the first image-capture system is capturing the first image data, the device may operate a second image-capture system to determine an updated value for the first image setting, and send an instruction to the first image-capture system that indicates to use the updated value for the first image setting to continue to capture the first image data.

Abstract: A method for training the lanes of a main data link includes setting an initial lane voltage swing and conducting link at the initial value, and determining if link training was successful. If link training at the initial value of lane voltage swing was not successful, the value of lane voltage swing is incremented to a predetermined value. A determination is made as to whether the predetermined value of lane voltage swing exceeds a threshold value, and link training is ended if the predetermined value of lane voltage exceeds the threshold value. If the predetermined value of lane voltage swing does not exceed the threshold value, link training is conducted at the predetermined value of lane voltage swing until link training is successful or until a predetermined number of attempts at the predetermined value of lane voltage swing fail to successfully train the link.

Abstract: A video quality comparison tool provides for direct visual perceptual comparison of video sequences. Two inputs are presented at the same position and size, with no-look user choice of which to see and easy back-and-forth comparison while the videos are playing, single-stepping, or paused.

Abstract: Method of evaluating a defect of quality in a data signal, associated device and computer program. The method evaluates the defect of a carrier signal bearing data intended to be restored to a recipient, the signal including a video component and audio component. The method includes the following steps implemented on at least one sample of the signal: detection of a defect in the video component of the sample and calculation of a duration associated with the defect; assigning a class of defect to the defect detected as a function of its associated duration; according to the class of defect assigned, obtaining a result of searching for a defect in the audio component at the instants corresponding to the sample; deciding to confirm the detection of a defect of quality in the sequence as a function of the result of the search for a defect in the audio component.

Abstract: Systems and methods may provide for conducting a real-time perceptual quality analysis of a video, wherein the perceptual quality analysis includes at least one of a noise measurement, a contrast measurement and a sharpness measurement. One or more strength parameters of one or more post-processing modules in a video processing pipe may be set based on the perceptual quality analysis resulting in overall video processing that adapts to the changing perceptual quality of the input. In one example, the strength parameters include at least one of a contrast parameter and a de-noising parameter. The invention results in visually enhanced video at the output of the post-processing module.

Abstract: Disclosed is a diffraction microscopy capable of reducing influence of an increase in the incident angle range of a beam. Specifically disclosed is a diffraction microscopy in which a beam is incident on a sample, in which the intensity of a diffraction pattern from the sample is measured, and in which an image of an object is rebuilt using Fourier interactive phase retrieval on the basis of the measured intensity of the diffraction pattern. In this method, Fourier interactive phase retrieval is performed using deconvolution on the diffraction pattern subjected to convolution by the increase in the incident angle range of the beam.

Abstract: A system and method for detecting media source quality are provided. The system includes a data store comprising a computer readable medium storing a program of instructions for the detection of media source quality; a processor that executes the program of instructions; a video data receiver to receive video raw data, the video raw data corresponding to an uploaded and transcoded video; a video improver to apply a video improvement technique to the received video raw data to produce a modified version of the video raw data; and a video quality assessor to compare the received video raw data and the modified version of the video raw data, and based on the modified version of the video raw data improving on a factor associated with the video improvement technique, the video quality assessor indicates a phenomenon affecting the quality of the uploaded and transcoded video.

Abstract: Described in example embodiments herein are techniques for detecting a connection between a load and a connecting port. In accordance with an example embodiment, an output circuit is able to detect a corresponding connecting port includes a voltage output stage, a reference current source and a determination circuit. The voltage output stage is arranged to output a voltage signal to an output end of the output circuit. The reference current source is arranged to selectively provide a first current to the output end. The determination circuit is arranged to generate a determination signal according to whether a second voltage signal is identical to a first voltage signal that is caused by the first current flowing into the output end. The determination signal indicates the load is connected to the connecting port when the second voltage signal is not identical to the first voltage signal.

Abstract: A lens testing system may have a test pattern source that generates a test pattern of light. A lens may have a lens surface that reflects the test pattern of light. A digital camera system may capture an image of the reflected test pattern of light. Computing equipment may perform image processing operations to evaluate the captured image of the reflected test pattern. The test pattern may contain a known pattern of test elements such as a rectangular array of spots or test elements of other configurations. During image processing operations, the computing equipment may analyze the reflected version of the spots or other test elements to measure characteristics of the lens such as radius of curvature, whether the lens contains flat regions, pits, or bumps, lens placement in a support structure, and other lens performance data. The computing equipment may compare the measured lens data to predetermined criteria.

Abstract: A radio frequency front end for a television band receiver and spectrum sensor includes a low noise amplifier that amplifies a received signal output of a radio frequency antenna connected to the radio frequency front end, a pin diode attenuator circuit that selectively attenuates an output of the low noise amplifier, and a buffer amplifier that amplifies an output of the pin diode attenuator.

Abstract: The present disclosure related to acquisition of color calibration charts. In at least some examples herein, an image of a calibration color chart is processed. A lighting condition of the color calibration chart may be automatically determined.

Abstract: Methods and systems for analyzing camera lenses and presenting information regarding camera lenses performance are described. An interactive user interface is provided over a network for display on a user terminal by a computer system. A user request is received at the computer system from the user terminal for lens data from a first lens. Lens data, including test data obtained via a first digital image captured using the first lens at the first focal length setting and the first aperture setting is accessed from memory and transmitted to interactive user interface. The interactive user interface is configured to display an identification of the first camera body, an identification of the first lens, the first focal length setting used to capture the image, and the first aperture setting used to capture the image. Using the lens test data, the interactive user interface generates and displays sharpness graph data.

Abstract: A method and device for light parameter measurement, a method for screen adjustment and an electronic device are provided. A current image parameter corresponding to a type of a parameter to be measured obtained by a camera under a first operation mode is acquired, a light parameter value corresponding to the current image parameter is determined based on a preset correspondence between an image parameter and a light parameter, and the light parameter value corresponding to the current image parameter is taken as a current light parameter.

Abstract: A method and apparatus for measuring the quality of a video is provided. The method comprises: generating a frame loss pattern of the video by indicating whether each frame in the video is lost or successfully transmitted; and evaluating the quality of the video as a function of the generated t came loss pattern.

Abstract: A method and a meeting terminal for adjusting meeting place cameras in a remote presentation meeting system are disclosed. The method includes: determining a site to be tested in a meeting place (S202), wherein the site to be tested includes an intersection of the ideal boundary of depth of field of the meeting place and the ideal shooting boundary of the corresponding camera; determining the ideal imaging data of a reference object on the site to be tested (S204); acquiring, by the camera, actual imaging data of the reference object arranged on the site to be tested (S206); comparing the actual imaging data with the ideal imaging data and determining the range of needed adjustment of the camera according to the result of the comparison (S208) so as to make the actual imaging data of the reference object accord with the ideal imaging data.

Abstract: To construct a system composed as described hereafter, capable of easily calling out monitoring data from a monitoring system, where task information along with index information is a key, and for which tracking by a task system is desired, by linking the index information of the monitoring data managed by the index information of the task information and monitoring system, with the storage location, and which is composed of a first and second type work area where tasks are performed, a monitoring system server, a monitoring data storage device, monitoring objects, a task system server, and a task data storage device.

Abstract: The present invention ensures the visibility of a character or a drawing displayed on a screen. The illuminance of one or more partial areas forming a display unit is measured, and a video display position is set to an area except for the partial area where the illuminance is a reference value or more.

Abstract: An example system for testing camera modules may include: a polygonal structure that is rotatable, where the polygonal structure includes faces, each of which is configured to receive at least one camera module under test; and targets facing at least some of the faces of the polygonal structure, where each target is usable in testing a corresponding camera module facing the each target.