Abstract: A tiled display screen, a display method, a tiled display system, a computer device, a computer non-transitory readable storage medium are provided. The tiled display screen includes: a plurality of display modules each including a receiver, a processor, and at least one display panel. the processor is configured to acquire heat accumulation data of each display region in the display module; determining target gray-scale compensation data of each pixel according to the heat accumulation data, a heat influence coefficient among different display regions, first gray-scale data of the pixel corresponding to the data to be displayed, and a pre-generated gray-scale compensation table; and compensating a gray scale of the pixel according to the target gray-scale compensation data.

Abstract: A cloud-edge collaboration method is provided, a data transmission apparatus, a cloud platform, an edge device, a cloud-edge collaboration system, an electric device, and a computer readable medium. The cloud-edge collaboration method includes: receiving first information sent by an edge device, the first information at least comprising image feature information of an image to be recognized; determining whether a local feature library comprises reference feature information matching the image feature information; if the local feature library includes reference feature information matching the image feature information, generating a first determination result, and sending the first determination result to the edge device.

Abstract: A data transmission method, applied to a security platform in an IoT system, including: receiving a first request data packet including feature data and collection channel information corresponding to the feature data; matching the feature data in the first feature database; in response to feature information matched with the feature data existing in the first feature database, generating a first feedback data packet, and sending it to the service terminal, so that the service terminal performs operations according to the first feedback data packet; and generating a match success result data packet, performing an encryption operation on the match success result data packet, and sending an encrypted match success result data packet to the server, so that the server obtains the match success result data packet through a decryption operation, and performs a service recording according to the match success result data packet.

Abstract: A method for aryl debromination and acylation of a brominated benzo-fused nitrogen heterocycle includes: mixing a solution including the brominated benzo-fused nitrogen heterocycle with a solution including a dehydrogenation reagent, and conducting a first reaction to produce a first material; mixing the first material with a solution including a debromination reagent, and conducting a second reaction to produce a second material; and allowing the second material to undergo a third reaction with a solution including an amide compound, such that a nucleophilic substitution reaction occurs at a substitution position of original bromine on aryl of the brominated benzo-fused nitrogen heterocycle to produce an acylated substituent; and after the reaction is completed, conducting quenching and a post-treatment to produce an acyl-substituted benzo-fused nitrogen heterocycle.

Abstract: The present disclosure provides a display control method, including: performing a splitting processing on a source video stream of a display panel in response to a multi-path display control instruction, to obtain a plurality of same video sub-streams; acquiring a processing parameter corresponding to each video sub-stream, and processing the video sub-stream according to the processing parameter; and performing a tiling and merging operation on the processed video sub-streams to obtain an output video stream, and outputting the output video stream to the display panel for displaying. The present disclosure further provides a display control device, a display apparatus, and a computer readable medium.

Abstract: A data processing method is applied to a display apparatus. A display panel in the display apparatus includes pixels, and a backlight module thereof includes backlight units each corresponding to a position of one or more pixels. The method includes: in an (N?1)-th sliding window period, sampling a backlight data set, and storing an obtained N-th backlight data subset, the backlight data set including first backlight values of at least one row of backlight units, the at least one row of backlight units including an M-th roe of backlight units; and in an N-th sliding window period, sampling the backlight data set, storing an obtained (N+1)-th backlight data subset, and calculating a compensation coefficient of at least one pixel, in pixels corresponding to the M-th row of backlight units, that corresponds to the N-th backlight data subset according to the N-th backlight data subset.

Abstract: A tiled display screen, a display method, a tiled display system, a computer device, a computer non-transitory readable storage medium are provided. The tiled display screen includes: a plurality of display modules each including a receiver, a processor, and at least one display panel. the processor is configured to acquire heat accumulation data of each display region in the display module; determining target gray-scale compensation data of each pixel according to the heat accumulation data, a heat influence coefficient among different display regions, first gray-scale data of the pixel corresponding to the data to be displayed, and a pre-generated gray-scale compensation table; and compensating a gray scale of the pixel according to the target gray-scale compensation data.

Abstract: The present disclosure provides a display method for a splicing display screen, which belongs to the technical field of image display, wherein the splicing display screen includes a plurality of display panels spliced with each other, and the display method includes: determining initial gray-scale compensation data according to first gray-scale data for each pixel in current frame of image data and a pre-generated gray-scale compensation data table; acquiring temperature influence data of current frame of image data, and filtering each temperature influence data according to preset filter parameter information to obtain a gray-scale compensation coefficient; determining target gray-scale compensation data according to the gray-scale compensation coefficient and the initial gray-scale compensation data; and compensating a gray scale of the current frame of image data according to the target gray-scale compensation data to obtain compensated frame of image data.

Abstract: Display control method, display control device, non-transitory computer-readable storage medium and display device are disclosed. The display control method including: performing following steps in response to a data visualization display instruction: in response to a coordinate selection instruction, determining target coordinate position corresponding to the coordinate selection instruction in source image displayed on display panel, and determining an active region at least covering the target coordinate position according to the target coordinate position; acquiring image information of the active region; generating at least one image to be superimposed according to the image information of the active region, with the at least one image to be superimposed including pattern configured to represent the image information of the active region; and superimposing each image to be superimposed on the source image to obtain an output image, and outputting the output image to the display panel to be displayed.

Abstract: Provided is a video processor. The video processor includes: a receiving module, configured to receive source video display data and parse the source video display data as valid video display data; a pre-processing module, configured to generate valid video display data in a predetermined video format; an image quality processing module, configured to adjust image quality parameters to output a first video screen; a post-processing module, configured to extract video parameters, generate a blended screen, and blend the blended screen on the first video screen; and a video output module, configured to perform data format conversion on valid video display data of the first video screen and valid video display data of the blended screen to encapsulate as output video display data, and output the output video display data to an external display to blend the blended screen on the first video screen.

Abstract: A method for preparing a benzylamine derivative through amination of a benzylic C—H bond under visible light-induced nickel catalysis is provided. The method includes: weighing and adding an amination reagent, a ruthenium or iridium photosensitizer, a nickel catalyst, a Lewis acid, and a ligand according to a molar ratio to a reaction vessel; under an inert gas atmosphere, adding a solvent, stirring, adding a benzyl-containing alkylate, and irradiating with a visible light source to allow a full reaction; and conducting separation and purification to obtain the benzylamine derivative. The method involves cheap and easily-available raw materials, and has relatively-extensive substrate applicability. In addition, the method has advantages such as mild reaction conditions, a high yield of a target product, small pollution, and a simple reaction operation and post-treatment, and thus is suitable for industrial production.

Abstract: The present disclosure provides a display method for a splicing display screen, which belongs to the technical field of image display, wherein the splicing display screen includes a plurality of display panels spliced with each other, and the display method includes: determining initial gray-scale compensation data according to first gray-scale data for each pixel in current frame of image data and a pre-generated gray-scale compensation data table; acquiring temperature influence data of current frame of image data, and filtering each temperature influence data according to preset filter parameter information to obtain a gray-scale compensation coefficient; determining target gray-scale compensation data according to the gray-scale compensation coefficient and the initial gray-scale compensation data; and compensating a gray scale of the current frame of image data according to the target gray-scale compensation data to obtain compensated frame of image data.

Abstract: An image drawing method, a display apparatus, and a storage medium, relates to the technical field of display. The method comprises: determining a gray-scale value of each of a plurality of target-pixels in a displayed image; determining a pixel quantity in each preset gray-scale level according to the gray-scale value of each of the plurality of target-pixels; representing a maximum quantity of a plurality of pixel quantities by a first numeral system, to read values in a preset digit range of the digit of the first numeral system corresponding to the maximum quantity, determining a proportional coefficient corresponding to the values, and according to a height of a histogram to be drawn, a gray-scale to be drawn and the proportion coefficient, drawing the histogram.

Abstract: The present disclosure provides a display control method, including: performing a splitting processing on a source video stream of a display panel in response to a multi-path display control instruction, to obtain a plurality of same video sub-streams; acquiring a processing parameter corresponding to each video sub-stream, and processing the video sub-stream according to the processing parameter; and performing a tiling and merging operation on the processed video sub-streams to obtain an output video stream, and outputting the output video stream to the display panel for displaying. The present disclosure further provides a display control device, a display apparatus, and a computer readable medium.

Abstract: Provided is a method for marking a focused pixel. The method includes: in response to marking a focused pixel of a first image based on a focus threshold, adjusting the focus threshold in the case that an adjustment condition is satisfied; marking a focused pixel of a second image based on the adjusted focus threshold. The adjustment condition includes: a focus degree of the first image is less than a target focus degree, and/or, the focus degree of the first image is greater than the target focus degree. Moreover, a similarity between the first image and the second image is greater than a similarity threshold, and a difference between a focus degree of the second image and the target focus degree is less than a difference between the focus degree of the first image and the target focus degree.

Abstract: Display control method, display control device, non-transitory computer-readable storage medium and display device are disclosed. The display control method including: performing following steps in response to a data visualization display instruction: in response to a coordinate selection instruction, determining target coordinate position corresponding to the coordinate selection instruction in source image displayed on display panel, and determining an active region at least covering the target coordinate position according to the target coordinate position; acquiring image information of the active region; generating at least one image to be superimposed according to the image information of the active region, with the at least one image to be superimposed including pattern configured to represent the image information of the active region; and superimposing each image to be superimposed on the source image to obtain an output image, and outputting the output image to the display panel to be displayed.

Abstract: A data processing method is applied to a display apparatus. A display panel in the display apparatus includes pixels, and a backlight module thereof includes backlight units each corresponding to a position of one or more pixels. The method includes: in an (N?1)-th sliding window period, sampling a backlight data set, and storing an obtained N-th backlight data subset, the backlight data set including first backlight values of at least one row of backlight units, the at least one row of backlight units including an M-th roe of backlight units; and in an N-th sliding window period, sampling the backlight data set, storing an obtained (N+1)-th backlight data subset, and calculating a compensation coefficient of at least one pixel, in pixels corresponding to the M-th row of backlight units, that corresponds to the N-th backlight data subset according to the N-th backlight data subset.

Abstract: A data transmission method, applied to a security platform in an IoT system, including: receiving a first request data packet including feature data and collection channel information corresponding to the feature data; matching the feature data in the first feature database; in response to feature information matched with the feature data existing in the first feature database, generating a first feedback data packet, and sending it to the service terminal, so that the service terminal performs operations according to the first feedback data packet; and generating a match success result data packet, performing an encryption operation on the match success result data packet, and sending an encrypted match success result data packet to the server, so that the server obtains the match success result data packet through a decryption operation, and performs a service recording according to the match success result data packet.

Abstract: A cloud-edge collaboration method is provided, a data transmission apparatus, a cloud platform, an edge device, a cloud-edge collaboration system, an electric device, and a computer readable medium. The cloud-edge collaboration method includes: receiving first information sent by an edge device, the first information at least comprising image feature information of an image to be recognized; determining whether a local feature library comprises reference feature information matching the image feature information; if the local feature library includes reference feature information matching the image feature information, generating a first determination result, and sending the first determination result to the edge device.

Abstract: Provided is a video processor. The video processor includes: a receiving module, configured to receive source video display data and parse the source video display data as valid video display data; a pre-processing module, configured to generate valid video display data in a predetermined video format; an image quality processing module, configured to adjust image quality parameters to output a first video screen; a post-processing module, configured to extract video parameters, generate a blended screen, and blend the blended screen on the first video screen; and a video output module, configured to perform data format conversion on valid video display data of the first video screen and valid video display data of the blended screen to encapsulate as output video display data, and output the output video display data to an external display to blend the blended screen on the first video screen.