Abstract: A video signal processing device is configured to include a quantizer that sequentially outputs quantized data obtained by quantizing input data based on the video data of the first gradation into the video data of the second gradation, a storage that sequentially stores the quantized data output from the quantizer, a difference calculator that sequentially calculates differences between the video data of the first gradation for a current frame and the quantized data for a previous frame stored in the storage, and an integrator that sequentially outputs integral data obtained by sequentially integrating data output from the difference calculator as the input data of the quantizer.

Abstract: A method of tracking an eye gaze include obtaining a pre-calibrated speckle map of the eye of the user, determining a starting position of the eye using the pre-calibrated speckle map, and tracking movement of the eye relative to the starting position by: directing a light beam at the eye, detecting a plurality of speckle patterns formed at a detector by a portion of the light beam reflected by the eye, and tracking movement of the eye relative to the starting position by tracking the plurality of speckle patterns from frame to frame.

Abstract: A method of obtaining an image from an image sensor provided in a vehicle includes obtaining a vehicle speed of the vehicle; adjusting a shutter speed of the image sensor; adjusting either one or both of an international organization for standardization sensitivity (ISO) of the image sensor and an aperture of the image sensor based on the vehicle speed; and obtaining the image from the image sensor based on the adjusted shutter speed and the adjusted either one or both of the ISO and the aperture.

Abstract: An image decoding method according to the present document includes obtaining motion prediction information for a current block from a bitstream, generating an affine MVP candidate list for the current block, deriving CPMVPs for CPs of the current block based on the affine MVP candidate list, deriving CPMVDs for the CPs of the current block based on the motion prediction information, deriving CPMVs for the CPs of the current block based on the CPMVPs and the CPMVDs, and deriving prediction samples for the current block based on the CPMVs.

Abstract: The invention relates to a method for recording and providing digital images using a digital surgical microscope system. The method includes recording magnified video image of an object region by an image sensor in the image recording unit. The method also includes displaying, on a digital display unit, in at least certain regions, the image recorded by the image sensor. A magnification of the image displayed on the digital display unit is adjusted by a limit value of the magnification. The limit value of the magnification is set using situative parameters to determine an optimum magnification.

Abstract: Methods and hardware implementations for performing a motion search based on an estimated complexity of a block. The block is obtained from a first frame. A reference window is obtained from a second frame. For each partition type of N partition types, the block is partitioned into a plurality of partitioned blocks in accordance with the partition type. For each partitioned block of the plurality of partitioned blocks, a frequency transform of the partitioned block is computed, a complexity subvalue is computed for the partitioned block based on the frequency transform, and the complexity subvalue is accumulated into a complexity value for the partition type. M partition types are selected from the N partition types based on the N complexity values. A motion vector between the block and the reference window is determined for each partition type of the M partition types.

Abstract: A method for sample adaptive offset (SAO) filtering in a video encoder is provided that includes estimating SAO parameters for color components of a largest coding unit (LCU) of a picture, wherein estimating SAO parameters includes using at least some non-deblock-filtered reconstructed pixels of the LCU to estimate the SAO parameters, performing SAO filtering on the reconstructed LCU according to the estimated SAO parameters, and entropy encoding SAO information for the LCU in a compressed video bit stream, wherein the SAO information signals the estimated SAO parameters for the LCU.

Abstract: A method and apparatus for decoding video. The method includes determining a sample adaptive offset edge type of at least a portion of the image, determining a boundary edge type of the at least a portion of the image, modifying the sample adaptive offset edge type of the at least a portion of the image according to the determined edge type of the at least a portion of the image, selecting a sample adaptive offset type according to at least one of the determined sample adaptive offset edge type or the modified sample adaptive offset edge type, and filtering at least a portion of the image utilizing the selected filter type.

Abstract: A method for supporting video coding includes obtaining an image frame including a plurality of coding block groups each including one or more coding blocks, using a first coding control model associated with a first coding block group in the image frame to estimate one or more first coding parameters, using a second coding control model associated with a second coding block group in the image frame to estimate one or more second coding parameters, determining one or more effective coding parameters based on an evaluation of the one or more first coding parameters and the one or more second coding parameters, and using the one or more effective coding parameters to encode the plurality of coding block groups in the image frame.

Abstract: A method of video decoding according to the present invention may comprise determining an intra prediction mode of a current block, determining a DC value based on at least one of top reference samples or left reference samples of the current block when the intra prediction mode of the current block is a DC mode, and deriving a prediction sample of the current block based on the DC value.

Abstract: A method of controlling output bitrate of a video encoder encoding a video sequence comprises: setting an allowable average bitrate, gathering encoding data by encoding video during a first time period and for each of a plurality of time intervals, storing a respective output bitrate, and a quantisation parameter used for encoding during the respective time interval. For each time interval, the output bitrate is normalised by calculating a corresponding normalised bitrate estimated for a predetermined nominal quantisation parameter as a function of the output bitrate and the quantisation parameter. An average normalised bitrate is calculated by averaging the normalised bitrates of the plurality of time intervals. A new quantisation parameter is calculated based on a comparison of the average normalised bitrate and the allowable average bitrate. The video sequence is encoded using the new quantisation parameter during a second time period subsequent to the first time period.

Abstract: Methods for capturing an image for identity verification and recordation are provided. The methods may include receiving, at a specialized processing device, transfer data from a remote terminal. The methods may include determining, based on the transfer data, that an identity verification process is required to execute the transfer data. The methods may include sending, based on a determination that the identity verification process is required, a first image file to the terminal for display. The methods may include receiving from a mobile device, information derived from the first image file which identifies the transfer data and a second image file. The methods may include determining, whether the second image file meets a predefined criteria associated with the transfer data identified by the information derived from the first image file. The methods may include sending an authorization signal upon determining that the second image file meets the criteria.

Abstract: Embodiments of a method and device for controlling image capturing and a system for acquiring an image of a chassis of a vehicle are provided, which relate to image capturing technology and can eliminate deformation of images occurred due to stretch or compression in image capturing. The system includes a speed measuring module, a control module, and a line scan camera. The speed measuring module measures the speed of the vehicle and transmits the measured speed of the vehicle to the control module. The control module determines line frequency for image capturing according to the speed of the vehicle, and controls the line scan camera to perform image capturing on the chassis of the vehicle with the line frequency.

Abstract: This disclosure describes techniques for enabling very precise on/off control of two or more different decoder-side refinement tools. Rather than merely allowing or enabling these tools for an entire video sequence of video data, this disclosure describes techniques for enabling or disabling different decoder-side refinement tools for subsets (or portions) of a video sequence.

Abstract: A wearable form factor wireless camera may include an image sensor for capturing video, the image sensor powered by a battery internal to the wearable form factor wireless camera. The camera may be ruggedized and attached attach to clothing worn on a user. Further, the camera may include a burst transmission unit to transmit video via a cellular network, and include video analytics software executed by an internal processor, coupled to a buffering memory and powered by the battery. The camera may also include an internal storage device powered by the battery and configured to store video information at a first fidelity, the stored video information capable of being transmitted to a base station at the first fidelity and at a second fidelity. Also, the first fidelity may provide higher video quality than the second fidelity. The camera may switch the second fidelity to the first fidelity upon a trigger.

Abstract: An image decoding method according to the present invention comprises the steps of: deriving, from a bitstream, quantized transform coefficients for a block to be decoded; deriving transform coefficients through dequantization on the basis of the quantized transform coefficients for the block to be decoded; determining a transform configuration group for the block to be decoded; deriving a horizontal transform kernel and a vertical transform kernel on the basis of the transform configuration group and transform index information acquired from the bitstream; deriving residual samples by performing a separable transform on the basis of the horizontal transform kernel and the vertical transform kernel; and generating a reconstructed picture on the basis of the residual samples and prediction samples of the block to be decoded, wherein the transform configuration group includes an identity transform kernel as a candidate transform kernel for the horizontal transform kernel or the vertical transform kernel.

Abstract: A video coder can be configured to determine an intra-prediction mode for a block of video data, identify a most probable transform based on the intra-prediction mode determined for the block of video data, and code an indication of whether the most probable transform is a transform used to encode the block of video data. The most probable transform can be a non-square transform.

Abstract: The present application relates to a method and system that enable consumers to have deliveries made and services performed safely and securely when they are not at the location at which the delivery is made or service is performed.

Abstract: An apparatus for decoding a video signal, the apparatus comprising a processor, wherein the processor is configured to: configure a Motion Vector Prediction (MVP) candidate list for motion compensation of a current block through one of a first method and a second method, acquire a motion vector predictor of the current block, based on the configured MVP candidate list, acquire a motion vector differential value indicating a difference between a motion vector of the current block and the motion vector predictor, modify the motion vector differential value, based on a resolution of the motion vector differential value of the current block, acquire the motion vector of the current block, based on the motion vector predictor and the modified motion vector differential value, and reconstruct the current block, based on the acquired motion vector.

Abstract: A medical apparatus is described for providing visualization of a surgical site. The medical apparatus includes an electronic display disposed within a display housing. The medical apparatus includes a display optical system disposed within the display housing, the display optical system comprising a plurality of lens elements disposed along an optical path. The display optical system is configured to receive images from the electronic display. The medical apparatus can include.