Abstract: A method for embedding video watermarks. Areas of poor visual quality in a video content having embedded watermarks ar determined. The watermark symbols replace pixels in the video content with pixels in which the luma values are modulated such the luma value for a 0 bit renders as black and the luma value for a 1 bit renders a shade of gray. The luma value for the 1 bit level is reduced in those areas determined to have poor visual quality. Areas of poor visual quality may be determined by analyzing the luma values of pixels of the video content immediately adjacent to and below a particular watermark symbol to derive an adjacent brightness parameter that represents the perceptual brightness of the surrounding video content. The reduction of the luma value may be achieved by setting the 1 bit luma for a particular watermark symbol to be perceptually less bright than the adjacent brightness parameter.

Abstract: The present invention relates to a big data evaluation method and system. The method comprises steps of: determining evaluated data, reference data and different statistical indexes for data evaluation according to a preset experimental requirement; performing comparative calculation according to the evaluated data, the reference data and the statistical indexes to obtain corresponding numerical values of the statistical indexes; normalizing the numerical values of the statistical indexes to obtain normalized data; establishing a multi-dimensional spatial coordinate system according to the normalized data, and determining a distance value between the preset evaluation data and the reference data according to the multi-dimensional spatial coordinate system; and judging the comprehensive simulation capability of the evaluated data according to the distance value.

Abstract: A display panel includes a display area, a non-display area at least partially surrounding the display area, a plurality of heating wires, a first voltage terminal, and a second voltage terminal. The plurality of heating wires are arranged in the display area. The plurality of heating wires extend along a first direction and are arranged along a second direction. The first direction intersects with the second direction. Each heating wire of the plurality of heating wires includes a first signal end and a second signal end. The first signal end and the second signal end of the same heating wire are arranged on a first side of the display area along the first direction. The first voltage terminal and the second voltage terminal are arranged in the non-display area.

Abstract: A display panel includes a substrate and heating wires located at least in a display area of the substrate. The heating wires extend along a first direction and are arranged along a second direction. The first direction intersects with the second direction. Each heating wire includes a first signal end and a second signal end. The first signal end and the second signal end of the same heating wire are located on two sides of the same heating wire along the first direction. First signal ends of the plurality of heating wires are located on a first side of the display area along the first direction. Second signal ends of the plurality of heating wires are located on a second side of the display area along the first direction.

Abstract: A simulation traffic scenario file generation method includes obtaining drive test data, where the drive test data includes traffic scenario data collected when an autonomous vehicle performs a driving test on a real road; determining a first moment at which the autonomous vehicle enters a first driving state or generates a request for entering the first driving state during the driving test; determining first clip data from the drive test data based on the first moment and ego vehicle information of the autonomous vehicle during the driving test; and generating a description file of a simulation traffic scenario based on at least the first clip data.

Abstract: A display module and a display device are provided in the embodiments of the present disclosure. The display module includes a display panel, the display panel includes a first surface and a second surface opposite to each other, at least one of the first surface and the second surface is a display surface, and the display module further includes an optical modulation structure arranged on at least one of the first surface and the second surface of the display panel. The optical modulation structure includes: a first transparent substrate and a second transparent substrate arranged opposite to each other, a charged particle arranged between the first transparent substrate and the second transparent substrate, and a first transparent electrode structure arranged between the first transparent substrate and the second transparent substrate and configured to form an electric field for driving the charged particle to move.

Abstract: Provided are a method, apparatus and device for extracting image features, and a storage medium. The method includes: obtaining parameters to be quantized of a network layer in a neural network model (S101); determining whether values of the parameters to be quantized are all positive numbers (S102); when the values of the parameters to be quantized are all positive numbers, executing, based on an asymmetric linear quantization logic, a quantization operation on the parameters to be quantized (S103); when the values of the parameters to be quantized are not all positive numbers, executing, based on a symmetric linear quantization logic, a quantization operation on the parameters to be quantized (S104); and extracting features of an input image by using the neural network model for which the quantization operation has been executed (S105).

Abstract: A blockchain-based supervision system of hazardous chemical production includes: a collection layer, for collecting production data information, wherein a collection device in the collection layer sets a TEE to encrypt or hash the collected production data information; a data layer, for uplinking a hash certificate of the production data information through an alliance chain, wherein the collection layer communicates with the data layer; a blockchain, for deploying a file uplink contract and encrypting and storing a file on a privacy computing server after the file is connected to the trusted environment; and a privacy computing system, for forming a metadata market of the data from file description information, recording the metadata information of the collected data. A data user applies for the right of use to a production enterprise that produces the data, and after obtaining authorization, the data user performs various applications on the privacy computing system.

Abstract: An image compression sampling method and assembly are provided.

Abstract: A touch method, a touch circuit and a touch device are provided. The touch method includes: in ath touch time period, providing a touch driving signal to ath touch driving electrode; wherein a is a positive integer, a is less than or equal to A, and A is a positive integer; in ath background data detection time period, providing a touch accompanying signal to N touch driving electrodes adjacent to the ath touch driving electrode; wherein N is a positive integer; and performing touch detection according to ath touch sensing signal on touch sensing electrodes in the ath touch time period and ath background data voltage signal on the touch sensing electrodes in the ath background data detection time period; wherein an amplitude of the touch accompanying signal is less than an amplitude of the touch driving signal.

Abstract: Methods, devices, and media are disclosed for mapping of input and output spaces in head-based human-computer interactions. In some embodiments, an end-to-end method is described for designing a head-based user interface, calibrating the interface to individual users, and interacting with a user in real time by mapping head-based user inputs to an output space in a way that optimizes the target selection efficiency of the interaction. Head orientation may be leveraged to define the mapping between the user input and the output space.

Abstract: Provided are a display panel and a manufacturing method thereof. The display panel includes a base material and a first metal layer and a second metal layer which are laminated on the base material in a thickness direction of the display panel. The first metal layer includes first metal lines, the second metal layer includes second metal lines, the first metal lines extend in a first direction, and the second metal lines extend in a second direction, the first direction intersects the second direction. The first metal layer or the second metal layer includes third metal lines, a third metal line includes at least two first segments extending in the first direction and at least two second segments extending in the second direction, and two adjacent first segments are connected by one second segment. The display panel further includes a heating control assembly electrically connected to the third metal lines.

Abstract: A light guiding structure, a light source module and a display module are disclosed. The light guiding structure includes a light guiding body and at least one light guiding cavity disposed in the light guiding body. The light guiding body includes a light incident surface and a light exit surface which are disposed opposite to each other. Each light guiding cavity includes a first end close to the light incident surface of the light guiding body and a second end away from the light incident surface of the light guiding body, and the light guiding cavity extends from the first end to the second end.

Abstract: A method for evaluating performance of a self-driving vehicle oriented to full parameter space of a logical scenario is provided. After the test logic scenario of the self-driving vehicle system and its matched parameter space are given, the tested self-driving vehicle system is put into the logic scenario for testing, and the driving data under each specific test condition is obtained. After the driving trajectory of the tested self-driving vehicle system in the whole test logic scenario parameter space is obtained, the logic scenario is divided into two parts according to the ideal vehicle motion curve, namely, a safe region and a dangerous region. The key points and indicators of evaluation in the two regions are determined.

Abstract: An edge-lit light source includes at least two light guide layers and one or more light-emitting elements. Side surfaces of each layer include a light incident surface and a light exit surface. The layer includes a bending region. A light-emitting surface of each element faces a light incident surface of at least one layer. The layer includes first and second light guide portions. An end surface of the first light guide portion is the light exit surface. The second light guide portion includes at least two light guide bars each including a bending portion and an extending portion. A surface of the extending portion is a light incident sub-surface. The light-emitting surface of each element faces at least one light incident sub-surface. Second light guide portions of the at least two layers are arranged in a second direction perpendicular to a thickness direction of the first light guide portion.

Abstract: A touch substrate includes a base plate; touch electrodes; and at least three light adjustment layers stacked on a side of the base plate, and adjacent two of the light adjustment layers have different refractive indexes; the touch electrodes include a first touch electrode and a second touch electrode that are disposed on a side, backing onto the light adjustment layers, of the base plate, the second touch electrode is disposed on a side, backing onto the base plate, of the first touch electrode; the touch substrate further includes: a first insulating layer disposed between the base plate and the first touch electrode; a second insulating layer disposed between the first touch electrode and the second touch electrode; and a third insulating layer disposed on a side, backing onto the base plate, of the second touch electrode.

Abstract: An edge-lit light source includes one or at least two light guide layers arranged in a stack and one or more light-emitting elements. Of one or more light guide layers of the one or at least two light guide layers, side surfaces of each light guide layer includes a light incident surface and a light exit surface, and the light guide layer includes a bending region located between the light incident surface and the light exit surface. A light-emitting surface of each light-emitting element faces a light incident surface of at least one light guide layer of the one or more light guide layers.

Abstract: The present disclosure provides a dynamic true triaxial electromagnetic Hopkinson bar system and testing method, the method including: firstly, before applying a static prestress and an impact load, recording and storing complete ultrasonic signals in the directions X, Y, and Z without application of the static prestress and the impact load; secondly, applying the static prestress; thirdly, recording and storing complete ultrasonic signals in the directions X, Y, and Z under the static prestress; fourthly, applying the impact load, and utilizing an triaxial and six-directional synchronous-coordinated-control electromagnetic loading system to apply a dynamic impact load to a test specimen; and fifthly, after completing the dynamic impact loading test, recording and storing once again complete ultrasonic signals in the directions X, Y, and Z without releasing the static prestress after application of the static prestress and the dynamic impact load.

Abstract: Disclosed are a method and apparatus for automatically detecting and suppressing fringes, an electronic device, and a computer-readable storage medium. The method includes the following steps: an image shot by a camera is acquired, and a fringe of the image is recognized; at least one fringe action parameter is acquired among shooting parameters of the camera based on a recognition result obtained by recognizing the fringe of the image; and a parameter adjustment is performed on the acquired fringe action parameter by adopting a parameter adjustment strategy matched with the acquired fringe action parameter, to perform fringe suppression on the image shot by the camera.

Abstract: A manufacturing method of a touch substrate, a touch substrate, and a touch displaying device. The touch substrate comprises a base plate and touch electrodes, wherein a first film layer, a second film layer and a third film layer are sequentially stacked on one side of the base plate, and the refractive index of the second film layer is smaller than that of the first film layer and the third film layer.