Abstract: The present disclosure provides methods, devices, apparatus, and storage medium for performing speech-to-text conversion. The method includes: displaying, by a first device, a first user interface, the first user interface being a display screen of a virtual environment that provides a virtual activity place for a first virtual role controlled by a first user account; displaying, by a second device, a second user interface, the second user interface being a display screen of a virtual environment that provides a virtual activity place for a second virtual role controlled by a second user account; in response to a speech input operation by the first user account performed on the first device, displaying, by the first device, a chat message in a first language, and displaying, by the second device, the chat message in a second language.

Abstract: Some aspects of the disclosure provide a method of video decoding. The method includes: receiving a bitstream that comprises coded information of one or more pictures; generating, according to the bitstream, at least a to-be-filtered sample, and input samples for filtering the to-be-filtered sample in an in-loop filter, the in-loop filter using a Wiener-based filter with an adaptive filter shape; determining a modified filter shape for the Wiener-based filter, the modified filter shape being adapted according to a relationship between the to-be-filtered sample and the input samples; and applying the Wiener-based filter with the modified filter shape on the input samples to generate a filtered output of the to-be-filtered sample.

Abstract: A method for online monitoring of temperature in current terminal blocks based on thermal imaging are provided, including: obtaining real-time temperature distribution information of current terminals of a terminal box; using an external communication substation to upload the obtained real-time temperature distribution information to the secondary intelligent operation-and-maintenance control platform; determining whether there is an abnormality in temperature of the current terminals, if there is an abnormality, issuing an alarm message about potential danger for an open circuit of a current secondary circuit. The method provided by the present invention has a self-verification function of measurement data and can suppress the influence of ambient temperature.

Abstract: A driving circuit and arrangement for driving a load between two output terminals. The driving circuit comprises an input and output terminals connected to the input. A fault detection inductor is connected in series with the output terminals, and is configured to modify an electrical parameter through a feedback inductor responsive to a change in current between the output terminals. The feedback inductor is galvanically isolated, but magnetically coupled, to the fault detection inductor. The driving circuit further comprises a first current sensing inductor through which a current provided by the converter passes, and the feedback inductor is also galvanically isolated, but magnetically coupled, to first current sensing inductor. Thus the feedback inductor can be induced with signal both from the first current sensing inductor and the fault detection inductor and saves components, space, and cost.

Abstract: The various implementations described herein include methods and systems for coding video. In one aspect, a method includes receiving a video bitstream including a current coding block of a current image frame and determining that the current coding block is to be predicted in a weighted bi-prediction (WBP) mode. The method further includes in response to the current coding block being predicted in the WBP mode, determining that the current coding block is associated with two bi-prediction blocks and identifying a plurality of distinct weighting factor lists including at least a first list of positive weighting factors and a second list of mixed weighting factors. The method further includes selecting one of the weighing factor lists, identifying a first weighting factor from the weighing factor lists, and reconstructing the current image frame, including determining the current coding block by combining the two bi-prediction blocks based on the first weighting factor.

Abstract: A video decoding method includes performing entropy decoding processing on a code block of a video image frame of a video image frame sequence, to obtain a quantization coefficient block of residual data corresponding to the code block; collecting statistics of quantization coefficients in a target region in the quantization coefficient block, to obtain a quantization coefficient statistical value; selecting a transform matrix combination corresponding to the quantization coefficient statistical value; and performing inverse transform processing on an inverse quantization result of the quantization coefficient block based on the selected transform matrix combination, to obtain reconstructed residual data, the reconstructed residual data being used for video image reconstruction.

Abstract: A device for monitoring the respiratory status of a user is disclosed. The device may comprise a nasal cannula comprising a nasal chamber including first and second prongs, a connector configured to couple the nasal cannula to a remote device, and a tube configured to couple the nasal chamber to the connector. The nasal cannula may also comprise optical fibers passing through at least a portion of the tube. A first optical fiber may be configured to transmit light to a first nasal passage of the user, a second optical fiber may be configured to receive light passing through a nose septum and into a second nasal passage of the user.

Abstract: A handheld portable oxygen concentrator device is disclosed. The device may comprise a first column and a second column, a product buffer, a plurality of valves in fluidly coupling the first column, the second column, the one or more pumps, and the product buffer. The device may comprise a controller configured to cycle repeatedly through the following phases: (a) raising pressure in the first column by connecting the first column to a positive pressure pump and releasing concentrated oxygen in the first column to the product buffer, (b) equalizing the pressure in the first column and the second column by connecting the first column to the second column, (c) lowering the pressure in the first column by connecting the first column to a negative pressure pump, and (d) equalizing the pressure in the first column and the second column by connecting the first column to the second column.

Abstract: Provided are a digital twinning method and system for a scene flow based on a dynamic trajectory flow, which belong to the field of traffic control. The method includes: extracting and identifying a target semantic trajectory with a detecting and tracking integrated multi-modal fusion and perception enhancement network; extracting road traffic semantics, so as to obtain a highly parameterized virtual road layout top view; obtaining a road layout traffic semantic grid encoding vector based on the virtual road layout top view; constructing a target coupling relation model; constructing a traffic force constraint model; constructing a long short term memory trajectory prediction network; predicting a motion trajectory of a target with the long short term memory trajectory prediction network, so as to obtain the predicted motion trajectory; and obtaining a digital twin of the scene flow based on trajectory extraction, semantic identification and the predicted motion trajectory.

Abstract: This application proposes a magnetic coupling coil optimization method. The method comprises: calculating an equivalent magnetic permeability of a magnetic coupling coil based on an air gap length of the magnetic coupling coil; calculating an effective cross-sectional area of the magnetic coupling coil based on the equivalent magnetic permeability and the power of the magnetic coupling coil; calculating a number of turns of the secondary winding of the magnetic coupling coil based on the effective cross-sectional area and the equivalent magnetic permeability; optimizing the magnetic coupling coil based on the number of turns of the secondary winding. The present application can reasonably configure the parameters of the magnetic coupling coil, effectively acquire energy from the power grid to provide stable power for detection or communication equipment in the power grid, and make the magnetic coupling coil more reliable while meeting the power demand.

Abstract: Provided are a fault diagnosis apparatus and method based on fluorescence multivariate correction analysis of transformer oil, relating to the field of transformer fault diagnosis technology. Thus, the problem of large volume and weight of the apparatus, high costs, and inconvenience to use caused when in the related art, a fluorescence spectrometer is directly used to acquire the fluorescence spectrum of transformer oil is solved. The monochromatic excitation light of an optimal excitation wavelength generated by a fluorescence excitation source is used to excite the transformer oil in a fluorescence excitation detection apparatus to generate fluorescence. The fluorescence excitation detection apparatus generates the fluorescence according to the input monochromatic excitation light and inputs the fluorescence to a fluorescence signal acquisition and analysis apparatus.

Abstract: A method, computer program, and computer system is provided for video encoding and decoding. Video data including a current picture is received. A virtual reference frame is generated for the current picture based on hierarchical level associated with the current picture and a nearest decoded picture. The video data is decoded based on the generated reference frame.

Abstract: A method and a device for compensating a surface error of a holographic grating substrate based on scanning and exposure technology relates to a technical field of grating development. The method and the device adopt surface error compensation technology based on phase modulation of interference fringes of a scanning beam interference lithography system. The method and the device solve a poor grating diffraction wavefront quality caused by a surface processing error in a field of holographic grating research and improves full-aperture diffraction wavefront quality of a grating.

Abstract: A device for analyzing cell morphology and a method for identifying cells are provided. A digital camera photographs a cell image of a blood sample under a low-magnification objective lens. A processor identifies and positions suspected cells of preset type in the cell image to obtain an identification result. Based on the identification result and a target number, the processor determines a number of suspected cells of preset type to be identified and positioned under the low-magnification objective lens. The digital camera further photographs, under a high-magnification objective lens, the suspected cells of preset type identified and positioned, and then the processor identifies whether the suspected cells of preset type photographed are cells of preset type, to count the number of cells of preset type photographed under the high-magnification objective lens and obtain a statistical value. If the statistical value?the target number, photographing is stopped.

Abstract: This application discloses a video encoding method, a video playback method, a related device, and a medium.

Abstract: The various implementations described herein include methods and systems for coding video. In one aspect, a method includes receiving a video bitstream that includes encoded video data and one or more syntax elements indicating one or more clipping ranges. The method includes deriving, based on the one or more syntax elements, the one or more clipping ranges for a portion of the encoded video data. Each of the one or more clipping ranges modifies a range of sample values of the received video bitstream. The method includes performing one or more clipping operations on the encoded video data using the derived one or more clipping ranges.

Abstract: The various implementations described herein include methods and systems for coding video. In one aspect, a method includes receiving a video bitstream that includes encoded video data; obtaining information indicating two or more different clipping ranges for the encoded video data; deriving the two or more different clipping ranges based on the obtained information; performing a first clipping operation on a first portion of the encoded video data based on a first clipping range of the two or more different clipping ranges; and performing a second clipping operation on a second portion of the encoded video data based on a second clipping range different from the first clipping range.

Abstract: This disclosure relates generally to video coding/decoding and particularly for enhancing block adaptive weighted prediction (BAWP) with a block vector. One method includes receiving a coded video bitstream; identifying, from the coded video bitstream, a block vector corresponding to a reference block associated with the current block of the current frame; determining a scaling factor based on a syntax explicitly signaled in the coded video bitstream; generating a predicted block based on the reference block according to a linear equation associated with the scaling factor; and reconstructing, by the device, the current block based on the predicted block.

Abstract: A semiconductor device according to the present disclosure includes a dielectric fin having a helmet layer, a gate structure disposed over a first portion of the helmet layer and extending along a direction, and a dielectric layer adjacent the gate structure and disposed over a second portion of the helmet layer. A width of the first portion along the direction is greater than a width of the second portion along the direction.

Abstract: A light-emitting device includes a semiconductor stack including a first semiconductor layer, a second semiconductor layer and an active area between the first semiconductor layer and the second semiconductor layer, wherein the first semiconductor layer including an upper surface; an exposed region formed in the semiconductor stack to expose the upper surface; a first protective layer covering the exposed region and a portion of the second semiconductor layer, wherein the first protective layer includes a first part with a first thickness formed on the upper surface and a second part with a second thickness formed on the second semiconductor layer, the first thickness is smaller than the second thickness; a first reflective structure formed on the second semiconductor layer and including one or multiple openings; and a second reflective structure formed on the first reflective structure and electrically connected to the second semiconductor layer through the one or multiple openings.