A method and respective system for determining quality of experience parameters of an encrypted video stream received at a client device is provided. The method comprises extracting, from one or more encrypted video streams sent over a network from a content server to a plurality of client devices, a first instance of at least one stream-related feature. A first instance of at least one quality-related label of a plurality of quality-related labels is determined based on applying a trained classifier to the first instance of the at least one stream-related feature, wherein each of the plurality of quality-related labels corresponds to a respective experience parameter of the quality of experience parameters of the encrypted video stream received at the client device.

A method for video quality detection and an image processing circuit thereof are provided. In the method, an image-processing circuit receives video signals with at least one frame image, and obtains brightness information of pixels from the frame image. A threshold is applied to the pixels of each frame in order to screen the brightness features that can be regarded as an attribute of each frame image. Therefore, a brightness distribution feature with respect to the pixels of each frame image can be obtained by a statistic method. Statistics showing the brightness distribution can be used to determine a quality of each frame image or a video. The image processing circuit can accordingly select an image processing process corresponding to the image quality of each frame image or the whole video.

There are provided computerized systems and methods for video quality assessment, the system including a server including a database configured to store pointers to a plurality of video clip pairs and a processor operatively connected thereto, configured to store pointers to a plurality of video clip pairs to be used in one or more test sessions performed by one or more users. The processor is configured to create, for each test session performed by a respective user: a test set, a display order and display positions of the each video in each video clip pairs in the set, and is further configured to send the one or more test sets to the one or more users for assessing quality and to receive feedback regarding the assessed quality, wherein the feedback is usable for providing subjective quality evaluation of the plurality of video clip pairs.

A set-top box with self-monitoring and system and method for use of the same are disclosed. In one embodiment of the set-top box, a housing secures a television input, a television output, a processor, memory, and storage therein, which are communicatively interconnected by a busing architecture. The memory is accessible to the processor, and the memory includes processor-executable instructions that, when executed, cause the processor to detect when the television is not being utilized. Responsive thereto, the instructions cause the processor to scan channels received from the television input and generate a composite TV screen image data that may be resolved to a single TV screen image made from an assemblage of TV screen image captures corresponding to the scanned channels.

Devices and methods for determining image quality using full-reference and non-reference techniques. Full reference image quality may be determined prior to output of an image or video frame from an image sensor processor by temporarily retaining image data from the image sensor and comparing processed image data of the image to the retained, non-processed image data of the same image. Full reference image quality determination may be assisted by a heuristic-based fault indicator. Image quality may also be determined by a non-reference technique of matching the image to one of various scenarios that are associated with sets of heuristics and applying the heuristics of the particular scenario to the image. Instead of relying on a nominal frame rate, video timing quality may be determined by comparing the capture time interval between successive video frames to the presentation time interval of the same video frames.

A controller for calibrating a videoconferencing system is disclosed. The system includes a first codec connected to a second codec through a videoconferencing connection. The controller includes an output in communication with the first codec for controlling the first codec to transmit a videoconferencing signal to the second codec through the videoconferencing connection, and an input for receiving a calibration adjustment value from another controller over a network, where the other controller is in communication with the second codec. The controller is configured to adjust a signal level setting of the first codec using a level adjustment command of the first codec, and the level adjustment command is determined according to the calibration adjustment value transmitted by the other controller.

This streaming design assistance method assists in the selection of an encoding condition for increasing the watching time in adaptive bitrate video streaming by causing a computer to execute: estimating a relationship between a watching time or an abandonment rate and an application quality index according to a mathematical model on the basis of an actual value of a watching time of each of a plurality of first sessions related to video streaming and an actual value of an application quality index of each of the sessions; estimating the application quality index of each of the sessions for each of a plurality of encoding conditions related to video streaming on the basis of the plurality of encoding conditions and an actual value of time-series throughput of each of a plurality of second sessions; and applying the application quality index estimated under each of the encoding conditions to the relationship to estimate an average watching time of the plurality of second sessions.

A work vehicle includes a changing object that is an object in which a known change in an external appearance occurs for each fixed time, an imaging device that images an area where the changing object appears, and a transmitting device that transmits an image captured by the imaging device.

Disclosed is a display apparatus that displays an information image and a control method thereof. The display apparatus includes an image processor; a display; and a processor configured to make content be processed by the image processor, make a content image based on the processed content be displayed on the display, generate information about an operation state of the display apparatus, and make an information image containing the generated information about an operation state and recognizable by a user terminal be displayed on the display. With this, the state information of the display apparatus may be effectively transmitted to the server that manages the display apparatus.

Provided is a sensor unit driving device capable of protruding and retracting a sensor unit for sensing a display surface without projecting a bezel in front of a display surface while reducing a width of a bezel. The present invention is to provide a sensor unit driving device comprising a display panel comprising a display surface for displaying an image, a sensor unit with a sensor, and an actuator driving the sensor unit. The sensor unit is configured to be on a lateral surface side or a rear surface side of the display panel when the sensor unit is in a retreat position and is configured so that the sensor faces the display surface when the sensor unit is in a detection position. The actuator is configured to drive the sensor unit for switching between the retreat position and the detection position by a movement of the sensor unit.