Abstract: A wearable electronic device includes a sensor module, a processor, a display controller, and a display, where the sensor is configured to: collect data, generate a sensor signal that represents a feature of data of currently collected data, and send the sensor signal to the processor, the processor is configured to: determine, according to the received sensor signal, a manner to display that is corresponding to the feature of data represented by the sensor signal and is of the display, generate a display control signal, and send the display control signal to the display controller, and the display controller is configured to control, according to the display control signal, the display to display.

Abstract: Example video data processing methods and apparatus are disclosed. One example method includes receiving a first stream from a client, where the first bitstream is obtained by encoding image data in a specified spatial object. The specified spatial object is part of panoramic space, and a size of the specified spatial object is larger than a size of a spatial object of the panoramic space corresponding to viewport information. The spatial object corresponding to the viewport information is located in the specified spatial object. The client receives a second stream, where the second bitstream is obtained by encoding image data of a panoramic image of the panoramic space with a lower resolution than a resolution of the image data included in the specified spatial object. The client plays the second bitstream and first bitstream.

Abstract: A user permission allocation method includes acquiring currently collected facial feature information of a user; determining a difference degree of the current facial feature information of the user according to the acquired facial feature information of the user and facial feature information included in stored standard sample information; and allocating a user permission to the user according to the determined difference degree. Compared with a manner of using a fixed face threshold, a difference degree of current facial feature information of the user is determined, and when a user permission is allocated to the user, an external factor that affects the collected facial feature information is used as a reference factor.

Abstract: An image processing method and apparatus. The image processing method includes: obtaining encoded data of a first region and a neighboring region neighboring to the first region in a two-dimensional planar image, where the two-dimensional planar image is an image obtained by mapping a spherical panorama image, and the first region and the neighboring region have an overlapping region; determining a pixel value of a pixel in an image of the first region; determining a pixel value of a pixel in an image of the neighboring region; and determining a target pixel value of a pixel in the overlapping region based on the pixel value of the pixel of the first region in the overlapping region and the pixel value of the pixel of the neighboring region in the overlapping region.

Abstract: A video coding mechanism is disclosed. The mechanism includes obtaining a coding tree unit including luma samples and chroma samples. The mechanism partitions the luma samples and the chroma samples according to a common coding tree when a size of a first coding tree node exceeds a threshold. The mechanism also partitions the luma samples with a luma coding sub-tree when a size of a second coding tree node is equal to or less than the threshold. The mechanism also chroma samples with a chroma coding sub-tree when a size of a third coding tree node is equal to or less than the threshold. The luma coding sub-tree contains a different set of split modes than the chroma coding sub-tree.

Abstract: A video coding mechanism is disclosed. The mechanism includes selecting a split mechanism to split a coding unit (CU) into sub-CUs for application of one or more transform units (TUs), the selection of the split mechanism based on comparing a CU width to a max TU width and comparing a CU height to a max TU height. The selected split mechanism is applied to the CU to obtain sub-CUs. A residual of one of the sub-CUs is determined. The residual includes a difference between sample values for the sub-CU and prediction samples for the sub-CU. The TUs are applied to transform the residual of the CU based on results of the selected split mechanism. A transformed residual for the CU is encoded into a bitstream.

Abstract: A wearable electronic device includes a sensor module, a processor, a display controller, and a display, where the sensor is configured to: collect data, generate a sensor signal that represents a feature of data of currently collected data, and send the sensor signal to the processor, the processor is configured to: determine, according to the received sensor signal, a manner to display that is corresponding to the feature of data represented by the sensor signal and is of the display, generate a display control signal, and send the display control signal to the display controller, and the display controller is configured to control, according to the display control signal, the display to display.

Abstract: Example video data processing methods and apparatus are disclosed. One example method includes obtaining viewport information by a server. The server obtains spatial object information based on the viewport information, where the spatial object information is used to describe a specified spatial object in panoramic space. The server obtains a first bitstream, where the first bitstream is obtained by encoding image data in the specified spatial object. The server obtains a second bitstream, where the second bitstream is obtained by encoding image data in the panoramic space. The server transmits the first bitstream and the second bitstream to a client.

Abstract: Technologies for inter prediction for a block in a video are provided. In one example, a method includes: parsing a bitstream to obtain a syntax element, where the syntax element includes at least an index of optimal candidate motion information of a current block; determining, based on the syntax element, to construct a first list or a second list for the current block, where the first list is a block-based candidate motion information list, and the second list is a subblock-based candidate motion information list; determining optimal motion information from the first list or the second list based on the index; and predicting the current block based on the optimal motion information. In this method, the block-based candidate motion information list and the subblock-based candidate motion information list are distinguished from each other. This effectively reduces transmission costs of the optimal candidate motion information.

Abstract: A method includes: parsing a bitstream to obtain an index value of a candidate motion vector list; constructing the candidate motion vector list, where the candidate motion vector list includes candidate motion vectors of K control points of a current block, the candidate motion vectors of the K control points are obtained based on a 2N-parameter affine transform model used for a neighboring block of the current block, N, K are integers greater than or equal to 2 and less than or equal to 4, and N is not equal to K; determining, in the candidate motion vector list, target candidate motion vectors of the K control points based on the index value; and obtaining a predicted motion vector of each subblock of the current block based on the target candidate motion vectors of the K control points. It helps improve coding efficiency in an audio and video coding process.

Abstract: The present disclosure discloses a preview-image display while a terminal device photographs a picture. The method comprises: obtaining a first preview image and a second preview image, wherein the first preview image is generated based on a first photographing mode and the second preview image is generated based on a second photographing mode; and displaying a first part of the first preview image and a second part of the second preview image at the same time.

Abstract: A content presentation method is used to intelligently present content to a user in different presentation modes according to different identified scenarios. The method includes acquiring, by an intelligent terminal, context data of a user, identifying a user use scenario according to the context data, determining a first presentation mode corresponding to the user use scenario, and presenting content to the user in the first presentation mode.

Abstract: A video coding mechanism is disclosed. The mechanism includes obtaining a coding tree unit including luma samples and chroma samples. The mechanism partitions the luma samples and the chroma samples according to a common coding tree when a size of a first coding tree node exceeds a threshold. The mechanism also partitions the luma samples with a luma coding sub-tree when a size of a second coding tree node is equal to or less than the threshold. The mechanism also chroma samples with a chroma coding sub-tree when a size of a third coding tree node is equal to or less than the threshold. The luma coding sub-tree contains a different set of split modes than the chroma coding sub-tree.

Abstract: Embodiments of the present invention relate to the communications field, and disclose a preview-image display method and a terminal device. obtain, by a terminal device, a first preview image during photographing, where the first preview image is a preview image that is of a current photographing screen and that is in a first photographing mode; determine a second photographing mode; obtain a second preview image, where the second preview image is a preview image that is of the current photographing screen and that is in the second photographing mode; determine a first part of the first preview image and a second part of the second preview image according to a preset rule; and display the first part of the first preview image and the second part of the second preview image in a preview area.

Abstract: Example video data processing methods and apparatus are disclosed. One example method includes obtaining viewport information by a server. The server obtains spatial object information based on the viewport information, where the spatial object information is used to describe a specified spatial object in panoramic space. The server obtains a first bitstream, where the first bitstream is obtained by encoding image data in the specified spatial object. The server obtains a second bitstream, where the second bitstream is obtained by encoding image data in the panoramic space. The server transmits the first bitstream and the second bitstream to a client.

Abstract: A mechanism of video coding is provided. The mechanism includes determining a motion vector predictor (MVP), a horizontal motion vector difference component (MVDx), and a vertical motion vector difference component (MVDy) associated with a motion vector (MV). A horizontal MV resolution (MVR) and a vertical MVR are also determined for the MV. A horizontal component of the MVP is rounded to a precision specified by the horizontal MVR and a vertical component of the MVP is rounded to a precision specified by the vertical MVR. The MV is determined based on the MVP, the MVDx, and the MVDy. The MV is then employed to position a current block in a current frame relative to a reference block in a reference frame. A video stream including the current frame is generated for display on a screen.

Abstract: A video coding mechanism is disclosed. The mechanism includes selecting a split mechanism to split a coding unit (CU) into sub-CUs for application of one or more transform units (TUs), the selection of the split mechanism based on comparing a CU width to a max TU width and comparing a CU height to a max TU height. The selected split mechanism is applied to the CU to obtain sub-CUs. A residual of one of the sub-CUs is determined. The residual includes a difference between sample values for the sub-CU and prediction samples for the sub-CU. The TUs are applied to transform the residual of the CU based on results of the selected split mechanism. A transformed residual for the CU is encoded into a bitstream.

Abstract: A content presentation method, a content presentation mode push method, and an intelligent terminal are used to intelligently present content to a user in different presentation modes according to different identified scenarios. The method includes acquiring, by an intelligent terminal, context data of a user, identifying a user use scenario according to the context data, determining a first presentation mode corresponding to the user use scenario, and presenting content to the user in the first presentation mode. In this way, the intelligent terminal can intelligently present the content to the user in different presentation modes according to different scenarios, thereby meeting a requirement of the user for a content presentation mode in different environments.

Abstract: Example video data processing methods and apparatus are disclosed. One example method includes obtaining viewport information by a server. The server obtains spatial object information based on the viewport information, where the spatial object information is used to describe a specified spatial object in panoramic space. The server obtains a first bitstream that is obtained by encoding image data in the specified spatial object. The server obtains a second bitstream that is obtained by encoding image data in the panoramic space. The server transmits the first bitstream and the second bitstream to a client.

Abstract: A method of coding implemented by a decoding device. The method includes receiving a bitstream from an encoding device, parsing the bitstream to determine whether a directional prediction mode or a non-directional prediction mode is signaled, using non-directional intra prediction to generate an image when the non-directional prediction mode is signaled, parsing a distance-weighted directional intra prediction (DWDIP) flag from the bitstream when the directional prediction mode is signaled to determine whether the DWDIP flag has a first value or a second value, using distance-weighted directional intra prediction to generate the image when the DWDIP flag has the first value, using directional intra prediction to generate the image when the DWDIP flag has the second value, and displaying, on a display of an electronic device, the image generated.