49 results about "Progressive scan" patented technology

The invention relates to the technical field of image analysis and mode recognition, in particular to a state monitoring and fault diagnosis method and system based on artificial intelligence. The invention discloses a state monitoring and fault diagnosis method based on artificial intelligence. The method comprises the following steps: S1, acquiring oil sample type data, performing background purification processing, and then executing a high-precision panoramic imaging process; the X-direction shooting number and the Y-direction shooting number are obtained based on the two-axis motion platform; s2, generating a grid coordinate sequence covering the deposition area according to the X-direction shooting number and the Y-direction shooting number, and forming a line-by-line scanning path; and synthesizing a full-focal-plane image based on the scanning path, and outputting a fused panoramic depth panorama according to the synthesized full-focal-plane image. According to the invention, through background purification, panoramic imaging, improved Mask-R-CNN mode recognition model segmentation and multivariate index fusion, precise recognition of wear particles and intelligent early warning and grading of wear states are realized.

The invention discloses an image enhancement processing method and system for an unmanned aerial vehicle monitoring video stream, and relates to the technical field of data processing, and the method comprises the steps: responding to a triggering instruction that an unmanned aerial vehicle enters a hovering verification state, extracting a current exposure line index, and resolving a target light beam projection angle corresponding to the current exposure line index, generating a scanning driving signal based on the linkage mapping relation of the two, performing line-by-line scanning exposure, and limiting the space coverage range of the physical projection light beam in a physical space slice corresponding to a pixel line which is currently in an exposure opening state, so that environmental near-field suspended particles outside the physical space slice are kept in a non-illumination state; and collecting the optical signal reflected by the physical space slice, and generating an enhanced video frame for suppressing near-field scattering interference. According to the application, the airborne linear light source and the exposure line are synchronously scanned, and the light beam coverage range is strictly limited in the physical space slice corresponding to the current exposure line, so that the near-field dust does not generate scattered light because the near-field dust is not illuminated.

The invention discloses a multi-modal partition detection and dynamic recursion fitting-based through groove contour dimension extraction method, which comprises the following steps of: preprocessing an original through groove image, and positioning a pre-center point; extracting reference edge midpoints of four sides of the through groove along the peripheral direction by taking the pre-central point as an original point; taking the midpoint of the reference edge of each edge as a center, extracting independent ROI images in a partitioned manner, and adaptively and dynamically enhancing the edge contrast of the ROI images in each direction; scanning the ROI image in each direction line by line, and extracting an initial edge point set in the corresponding direction of the through groove; nonlinear element edge points in abnormal intervals in the initial edge point sets of the ROI images in all directions are removed; after the ROI images in all directions are screened, edge straight lines are fitted through edge point sets, and the head point, the tail point and the middle point are solved; all edge straight lines in the ROI images in all directions are mapped to the original images of the through grooves, the mean value of the intervals in the X / Y directions is solved, and physical values of the sizes such as the length, the width, the symmetry degree and the inclination angle deviation of the through grooves are calculated. According to the invention, the scene adaptability, precision, robustness and expansibility of visual detection of the through groove in a complex noise scene are obviously improved.

To provide an encoder and a decoder, including confidence level information of the encoder in supplement enhancement information.SOLUTION: A decoder decodes received bit streams to acquire a supplemental enhancement information (SEI) message. The SEI message includes picture source data, and expresses a confidence level of relative confidence of an encoder in the accuracy of this picture source data. The decoder uses confidence level indication to determine whether the decoder should separately identify a picture as progressive or interlaced picture and / or whether the decoder should identify a duplicate picture, or the decoder receives picture source scanning information in the SEI message as valid as it is.SELECTED DRAWING: Figure 6

A super-resolution imaging method (100) and apparatus based on line scan. The super-resolution imaging method (100) based on line scan includes: providing multiple types of structured line excitation light, each of the multiple types of structured line excitation light having a different illumination mode (step S102); illuminating a target area in a manner of row-by-row scanning along a single first direction while switching the multiple types of structured line excitation light, such that each row in the target area is illuminated by a corresponding type of structured line excitation light among the multiple types of structured line excitation light (step S104); and detecting response light generated by the each row in the target area in response to being illuminated by the corresponding type of structured line excitation light (step S106).

To provide a stereoscopic image display device capable of controlling average luminance of pixels in a display period without depending on a position in a line sequential direction.SOLUTION: A stereoscopic image display device 10 includes a liquid crystal display panel 22, a variable focus lens unit 40, and a control unit 80. The liquid crystal display panel 22 displays the first image and the second image that are sequentially displayed by the line sequential scanning, and emits the display light PL1 of the first image and the display light PL1 of the second image. The variable focus lens unit 40 switches the focal distance with respect to the display light PL1, and forms the first image and the second image as virtual images on the first display surface 102 and the second display surface 104, respectively. The control unit 80 forms a display period for displaying each of the first image and the second image from a plurality of frame periods, and controls the luminance of the pixels of the liquid crystal display panel to the minimum luminance of the pixels in the last frame period of the plurality of frame periods forming the display period.SELECTED DRAWING: Figure 1

The application provides a disc area structure level determination method and device and electronic equipment. A first area containing a disc area is scanned line by line to obtain OCT volume data. A center point of the first area is taken as a center to star-type sample the OCT volume data to obtain a first number of first BScan two-dimensional section image data. An initial center point of the disc area is determined, and the OCT volume data is star-type sampled with the initial center point as the center to obtain a second number of second BScan two-dimensional section image data. The structure level of the disc area is determined. The OCT volume data is obtained in a line-by-line scanning manner, which ensures a high sampling rate. The sampled data is uniform and continuous. Star-type sampling is performed on the continuous data, which can avoid jumping and errors. In addition, the initial center point of the disc area is determined through star-type sampling, and then star-type sampling is performed with the initial center point as the center, which can obtain a more accurate disc area structure level.

The invention relates to a method and a measuring arrangement for topography measurement on a surface. In this process, the surface is scanned line by line in a scanning operation carried out in a measuring arrangement to generate an image composed of a plurality of scan lines, wherein, during this generation of the image, a phase shift between adjacent scan lines is set depending on at least one determined disturbance frequency of a disturbance occurring in the measuring arrangement during the scanning operation.

According to the combustion limiting layer quality detection method, system and device based on rotary motion, a weighing sensor, a 2D industrial camera and a 3D line scanning sensor are organically combined, three-dimensional scanning of a combustion limiting layer can be completed, grain weight detection, appearance collection and character recognition can be achieved, and in the process that a rotary platform drives a grain to rotate, the grain can be accurately detected, and the quality of the grain can be accurately detected. The 3D linear scanning sensor is kept still all the time, and three-dimensional data information of the surface of the grain is obtained by scanning the surface of the grain line by line; and receiving original multi-source data from data acquisition, and executing specific preprocessing aiming at the surface detection of the combustion limiting layer of the grain. 3D point cloud geometric information, 2D image texture features, OCR character recognition results and weighing data are comprehensively utilized, a comprehensive evaluation model of the quality of the combustion limiting layer is constructed, and defect detection, classification and severity quantification are achieved. According to the method, mechanical automation and an advanced visual detection algorithm are comprehensively utilized, and efficient and accurate detection of the quality of the combustion limiting layer is achieved.

In general, the subject matter described in this disclosure can be embodied in technology for operating a display device that includes a pixel array. A first frame is programmed to the array, while the display device is operating at a first refresh rate, including by scanning the first frame line-by-line to the pixel array at a first scan rate. An indication that the display device is to transition from the first refresh rate to a second refresh rate is received. An intermediate frame is then programmed to the pixel array, including by scanning the intermediate frame line-by-line to the pixel array at an intermediate scan rate. A second frame is then programmed to the pixel array, while the display device is operating at the second refresh rate, including by scanning the second frame line-by-line to the pixel array at the second scan rate.

The invention discloses an image text extraction method, device and equipment, a medium and a program product, and relates to the technical field of image recognition. The method comprises the steps of dividing pixel points in a to-be-recognized image into background pixel points and character pixel points based on a pixel classification threshold; pixel points in the to-be-recognized image are scanned line by line, and the to-be-recognized image is segmented into multiple lines of texts according to the number of background pixel points in each line of pixel points; performing column-by-column scanning on each row of texts, and performing text block segmentation on each row of texts according to the number of background pixel points in each column of pixel points; for the to-be-recognized text block, obtaining distribution data of character pixel points in a plurality of preset directions, and constructing a feature vector of the to-be-recognized text block according to the distribution data; and comparing the feature vector of the to-be-identified text block with a standard feature vector of a standard text in a text library, and determining a text corresponding to the to-be-identified text block. According to the technical scheme, the calculation cost of text extraction is reduced.

The application discloses a kind of self-adapting focusing microscope equipment, adopt the data processor of ZYNQ heterogeneous multi-core architecture, and realize automatic focusing by step S1 to step S5, based on the parallel processing architecture of PL unit, namely FPGA, image convolution operation of multiple images can be executed in parallel in step S3, will not affect the line-by-line scanning process of microimage in step S1 is executed synchronously, so that while completing microimage scanning in step S1, step S3 has completed the most part of calculation of image definition evaluation function, when microimage scanning is completed, image definition evaluation function can calculate the definition evaluation value of microimage in very short time;Therefore, the application uses camera+ZYNQ heterogeneous multi-core architecture to replace the serial execution architecture of industrial camera+host computer in the prior art, only needs the scanning time of microimage+very short time to obtain definition evaluation value, greatly shorten the time of obtaining definition evaluation value, improve focusing speed.

This invention provides a driving method and a display device for a display panel. The driving method includes: acquiring image data of the current frame of the display panel; determining a driving mode of the display panel based on the current frame image data, wherein the driving mode includes an interlaced scanning mode and a progressive scanning mode; and generating overdrive data for a plurality of sub-pixels based on the driving mode of the display panel.

The application discloses a kind of based on gray extremum analysis consolidated abrasive tool surface quality detection method, method includes image acquisition and pre-processing, candidate area positioning and feature point extraction, target area boundary adaptive extraction, region screening and gray difference calculation, particle gray and spatial distribution feature quantization five main steps.Through line scanning camera, surface brightness chart and depth chart are collected, after gray enhancement and filtering pretreatment, local extreme point is extracted as candidate area by line scanning, and target boundary is adaptively generated in combination with cross neighborhood gray contrast and gradient chart dynamic threshold criterion;Effective area is screened by morphological operation and area constraint again, and gray difference is calculated to represent particle height;Finally, multidimensional quantitative evaluation is realized through gray difference histogram, protruding height statistics, nearest neighbor distance analysis and grid uniformity measurement.The application has high sensitivity, high robustness and strong adaptability, and can be embedded in industrial production line to realize automatic, non-contact and high-precision surface quality detection.

The invention relates to an FPGA-based multi-spot centroid extraction method and an applicable system thereof, and relates to the technical field of in-orbit laser communication links. The method comprises the following steps: step 1, image preprocessing; step 2, scanning line by line, and recording current line information; 3, run length merging, and current row information updating; and 4, judging whether one frame of image is traversed or not, and calculating the coordinates of the center of mass. According to the multi-light-spot centroid extraction method based on the FPGA and the system applicable to the method, the parallel processing advantage of the FPGA can be exerted, statistical information can be obtained by traversing the image once, two lines of binary image information are cached by utilizing a neighborhood pipeline processing method, resource occupation is reduced, and the running speed of the system is increased.

The disclosure relates to a transmission device, an encoding device, a decoding device, a transmission method, an encoding method, and a decoding method. This transmission device is provided with: a circuit that, when an image to be processed is a progressive scan image during operation, writes one syntactic element indicating a color difference positioning type into a bit stream; the color difference positioning type is information indicating a position of a color difference sample with respect to a luminance sample for a frame included in the image to be processed, and the color difference positioning type is information indicating a position of a color difference sample with respect to a luminance sample in a case where the image to be processed is not a progressive scan image. Two syntax elements representing the color difference positioning type for each of the two fields included in the image to be processed are written into the bitstream, and the bitstream is transmitted.

The invention relates to an encoding device, a decoding device, a transmitting device, an encoding method, a decoding method, and a transmitting method. In an encoding device, a flag indicating whether or not information indicating the position of a color difference sample with respect to a luminance sample for a frame is included in a bitstream as one syntax element or two syntax elements is encoded in the bitstream. When information indicating the position of a color difference sample with respect to a luminance sample for a frame is included in a bitstream and when an image to be processed is a progressive scan image, one syntax element indicating a color difference positioning type is encoded in the bitstream. The color difference positioning type is information indicating the position of a color difference sample with respect to a luminance sample for a frame included in the image to be processed, and when the image to be processed is not a progressive scan image, two syntax elements indicating the color difference positioning type for each of two fields included in the image to be processed are encoded in a bitstream.

The invention provides a large-size precision measurement method and system based on CD-SEM, and is applied to the technical field of precision measurement, line-by-line scanning is triggered in real time and dynamic compensation is carried out in the continuous motion process of a platform so as to obtain a high-precision large-size image, line-by-line sampling is triggered through a displacement pulse, meanwhile, the displacement of the platform is monitored in real time, and the precision of the large-size image is improved. The position deviation is calculated as a compensation amount to be superposed into a deflection driving signal, so that the dynamic deviation correction of the scanning point position is realized, and the geometric consistency and accuracy of the image are ensured; in the calibration process, the pixel distance of the standard graph is compared with the actual displacement of the platform, and the corresponding pixel equivalent is calculated and used for calculating the physical size of the image. The method effectively solves the problem of precision reduction caused by displacement errors, vibration or uneven sampling in the traditional CD-SEM multi-frame splicing process, has the advantages of high efficiency, large range and measurability, and is suitable for online detection and quality control in the field of semiconductors and precision machining.

To provide an encoder and a decoder to flexibly determine how to process a bit stream portion.SOLUTION: A decoder decodes received bit streams to acquire a supplemental enhancement information (SEI) message. The SEI message includes picture source data, and expresses a confidence level of relative confidence of an encoder in the accuracy of this picture source data. The decoder uses confidence level indication to determine whether the decoder should separately identify a picture as progressive or interlaced picture and / or whether the decoder should identify a duplicate picture, or the decoder receives picture source scanning information in the SEI as valid as it is.SELECTED DRAWING: Figure 6

The invention provides an automatic synchronous exposure method and system based on a flat panel detector, and the method comprises the steps: carrying out the line-by-line scanning of pixels of the flat panel detector, obtaining the line pixel data of the flat panel detector, and obtaining the summation value of the line pixel data; comparing the summation value of the current row of pixel data with an exposure trigger threshold value in real time, and if the summation value of the current row of pixel data is greater than the exposure trigger threshold value, judging that exposure is started and immediately stopping scanning; after the scanning is stopped, enabling the flat panel detector to enter a silent integral state, calculating the maximum safe exposure time, monitoring the signal change rate in real time, and triggering the flat panel detector to end the silent integral; after silent integration is finished, scanning again to obtain an original exposure image, and processing the original exposure image according to the virtual dark field image data to obtain a net signal image; and performing nonlinear gain correction on the net signal image to obtain a final exposure output image. Through the method, the synchronous exposure performance of the flat panel detector is obviously optimized.

A driving circuit of a display panel and a driving method thereof are disclosed. The display panel includes multiple data lines and fan-out traces connected to the multiple fan-out traces in one-to-one correspondence. The driving circuit includes multiple compensation circuits and a signal input unit. Each compensation circuit includes an input terminal and an output terminal. The output terminals of the multiple compensation circuits are respectively connected to the plurality of fan-out traces. At least two gear positions are set in each compensation circuit. When the gear position of the compensation circuit increases, a capacitance value or a resistance value of the compensation circuit gradually decreases. The signal input unit outputs data signals to the input terminals of the multiple compensation circuits. Each compensation circuit selects a gear position depending on a gray scale of a data signal or a scanning time during progressive scanning of the display panel.

The application provides a gate driving circuit and a driving method thereof, a display panel and an electronic device. In a row scanning direction of the gate driving circuit, the display panel has a first refresh area and a second refresh area. Pixel circuits arranged in the first refresh area are configured to be turned on at a first refresh rate under the driving of a GOA unit. Pixel circuits arranged in the second refresh area are configured to be turned on at a second refresh rate under the driving of the GOA unit. The first refresh rate is different from the second refresh rate. In a time period in which the display panel displays X frames of pictures, the pixel circuits arranged in the first refresh area are configured to be turned on for A frame time ta under the driving of the GOA unit. The pixel circuits arranged in the second refresh area are configured to be turned on for B frame time tb under the driving of the GOA unit. The start frame of the A frame and the start frame of the B frame are the same, and tb is less than ta, so that the corresponding power consumption and heat generation are reduced.

The invention discloses a single-pixel uniform imaging correction method and system based on a scanning mode and a medium, and the method comprises the steps: generating a one-dimensional Hadamard substrate pattern, carrying out the multi-line copying, and carrying out the convergence in a vertical direction through a cylindrical mirror, thereby obtaining a one-dimensional Hadamard substrate pattern; projecting a one-dimensional Hadamard substrate pattern as a one-dimensional illumination pattern; the stepping motor drives the target image and the one-dimensional illumination pattern to form relative motion, and scanning modulation is carried out, so that the one-dimensional illumination pattern scans the target image line by line; the single-pixel detector collects a light intensity signal reflected after being modulated by the target image; based on the collected light intensity signals, the two-dimensional target area image is reconstructed line by line through an image reconstruction program, and the image reconstruction program comprises Hadamard inverse transformation. By designing the uniformity correction method, the reconstruction process is improved, and the brightness uniformity of the reconstructed image is improved.

The invention belongs to the field of automobile engine crankshaft defect detection imaging, and aims to solve the problems of low detection efficiency, easy misjudgment due to view limitation, difficult identification of microcracks caused by incapability of synchronously tracking crankshaft rotation, no self-protection due to crankshaft placement deviation and the like in the existing artificial magnetic powder inspection. The core of the invention is a crankshaft defect detection mechanism based on line-by-line scanning, and the crankshaft defect detection mechanism comprises a crankshaft follow-up mechanism and a signal control system: the crankshaft follow-up mechanism is based on a base and is provided with five fixed brackets for constraining a servo motor, two follow-up crankshafts and a detected crankshaft, and a follow-up bracket is provided with a gear transmission mechanism for ensuring the synchronous operation of a linear array camera and the detected crankshaft; the two follow-up crankshafts, the I-shaped beam rod body and the connecting rod large end jointly form a horizontal mechanism, meanwhile, a signal control panel shell is built, cameras are fixed to the I-shaped beam rod body and the connecting rod large end, a light supplementing lamp is installed at the tail end of the panel shell, and a detected crankshaft main journal is collected through a fixed line-scan digital camera. The signal control system comprises a power supply, a line-scan digital camera, an ADC analog-to-digital module, an MCU control module and the like. The detection efficiency and accuracy can be improved, and the assembly rhythm of a production line is met.

The invention discloses a time-sharing stroboscopic streaming defect detection method, device and equipment and a storage medium, and relates to the field of image detection. Sequentially scanning the material plate line by line based on the time-sharing stroboscopic parameter of the line scanning camera; for each selected scanning line, the camera polls and sets all stroboscopic parameters for scanning respectively; when a target line number is collected, frame extraction and line splicing processing is carried out on the scanning images under all the stroboscopic parameters, and channel line scanning images under different channels are obtained; each channel corresponds to a group of stroboscopic parameters; and respectively sending the line scanning images of all the channels into a defect model for defect detection, controlling the line scanning camera to count again, continuously carrying out line-by-line scanning and frame extraction splicing processing on the material plate, and carrying out defect detection. According to the scheme, the problems of high omission ratio, low detection efficiency and insufficient real-time performance caused by a single optical parameter in traditional printed circuit board defect detection are effectively solved through combination of time-sharing stroboflash and streaming processing.

The invention relates to a wall clearance degree recognition device and a use method thereof.The wall clearance degree recognition device comprises an imaging system, an image processing module and a sensor control module, the imaging system comprises a structured light projection module, an infrared receiving camera and an auxiliary infrared receiving camera, and the structured light projection module, the infrared receiving camera and the auxiliary infrared receiving camera cooperate to form a 3D binocular structured light collection unit which is used for scanning a to-be-detected wall line by line; acquiring three-dimensional point cloud data; the image processing module is used for performing cutting processing on the three-dimensional point cloud data, segmenting continuous data into single-frame complete 3D images with 1.5 m sections, calculating wall flatness parameters based on a triangulation principle, and executing over-limit judgment; the sensor control module controls the triggering time of the imaging system, data acquisition is synchronous, and based on an overrun judgment result of the image processing module, a detection process is controlled in a linkage mode to advance to a next section or return to be re-cleared and then re-measured. According to the invention, manual point-by-point measurement is replaced by automatic scanning, rapid and accurate detection of a large-area wall surface is realized, and the limitation of strong light, high altitude and other scenes is broken through.

The present application relates to the technical field of scanning, and particularly relates to a control method and device of a scanner, electronic equipment and program product, the method comprising: receiving a scanning trigger instruction, wherein the scanning trigger instruction comprises a planar original scanning instruction, a real scene shooting instruction or a cooperative scanning instruction; selecting a target scanning module of the intelligent scanner according to the scanning trigger instruction, wherein the target scanning module is at least one of a contact image sensor module and a camera sensor module; sending a driving signal to the target scanning module to control the target scanning module to start and execute image scanning and output corresponding analog image signals. Non-contact line-by-line scanning and area array photographing scanning can be supported, the device can be freely switched according to the type of scanned objects, precision requirements and efficiency requirements, high-precision fine acquisition and high-speed scanning of large quantities are taken into account, and the device versatility and scene adaptability are improved.

This application relates to video encoding and decoding, and specifically to tools and techniques for using and providing supplemental enhancement information in bitstreams. Among other things, the detailed description presents innovations for bitstreams having supplemental enhancement information (SEI). In particular embodiments, the SEI message includes picture source data (e.g., data indicating whether the associated picture is a progressive scan picture or an interlaced scan picture and / or data indicating whether the associated picture is a duplicate picture). The SEI message can also express a confidence level of the encoder's relative confidence in the accuracy of this picture source data. A decoder can use the confidence level indication to determine whether the decoder should separately identify the picture as progressive or interlaced and / or a duplicate picture or honor the picture source scanning information in the SEI as it is.

The application provides a display device and a driving method of a display panel. The display device comprises a display panel and a driving circuit. The display panel comprises 2*n scan lines extending along a row direction and arranged along a column direction in sequence and a plurality of sub-pixels arranged in an array. First sub-pixels in an i-th row of sub-pixels located in odd-numbered columns are electrically connected with a (2*x*i-1)-th row of scan lines, and second sub-pixels located in even-numbered columns are electrically connected with a (2*x*i)-th row of scan lines. The driving circuit is used for driving n odd-numbered row scan lines to perform line-by-line scanning on the first sub-pixels in n rows of sub-pixels in a first half frame period when a display mode corresponding to a to-be-displayed frame picture is a hardware super-resolution mode, and driving n even-numbered row scan lines to perform line-by-line scanning on the second sub-pixels in n rows of sub-pixels in a second half frame period, so as to drive the display panel to display the to-be-displayed frame picture. The display device provided by the application can realize HSR function.