242 results about "Image boundary" patented technology

The invention relates to the technical field of intelligent control, in particular to a self-adaptive camera pose intelligent adjusting system which comprises a dynamic recognition module, a pose adjusting module, a mechanism control module, an information filtering module and a feedback association module. According to the method, the foreground pixel brightness gradient and the boundary continuity in the image frame are extracted, the target displacement path can be recognized, the tracking information is constructed, the target coherent perception under rapid scene change is guaranteed, the attitude parameters and the target motion direction and speed are combined, the offset correction instruction is generated, the response stability of the dynamic target is improved, and the target tracking accuracy is improved. The execution structure feedback is used for correcting control output, reducing the driving error accumulation risk, eliminating non-target disturbance through image boundary definition and motion consistency, improving data purity and combining a view angle execution state and path information to realize synchronous control of tracking and view angle adjustment; and the response efficiency and the following robustness of the system in a dynamic environment are enhanced.

The invention relates to the technical field of video coding, in particular to a video coding method and system based on multi-channel concurrent software and hardware mixing, and the method comprises the following steps: analyzing brightness distribution and edge structures, screening effective frames, calculating frame priorities, dividing image blocks and combining processing units, counting the number of frame streams, and analyzing frequency concentration. And evaluating image coherence and a load state, and outputting a processing channel adjustment record. According to the invention, through screening of image content features, occupation of redundant frames on coding resources is reduced, through dynamic configuration of frame priorities, timeliness and accuracy of target frame scheduling are improved, an aggregation strategy of a block structure is combined, picture consistency after image processing is enhanced, and task frequency trend identification is utilized, so that image processing efficiency is improved. According to the method, accurate resource matching of a high-load flow section is achieved, joint judgment of image boundary continuity and structure hopping frequency is adopted, an allocation strategy of a processing channel is optimized, an image structure and channel scheduling form linkage, and stability and adaptive capacity are improved.

The invention relates to the technical field of image recognition, in particular to a mechanical casting detection method and system based on image data analysis processing, and the method comprises the following steps: obtaining a casting image gray value, classifying according to a gray scale standard, generating a multi-layer image structure and a layering graph, setting a grid, counting pixels to form a density sequence, extracting a trend region, and building an index table; and extracting multi-angle image boundary point matching intersection points to form a coordinate matrix, screening a stable intersection point set, searching an original image comparison trend coordinate to extract an overlapping region, and generating a defect annotation image result. According to the method, an image is subjected to gray scale division to form a multi-layer structure, texture differential expression is enhanced, a pattern layer grid statistics density sequence is used for extracting a trend region, abnormal distribution positioning is achieved, boundary mutation points in a multi-view image are uniformly mapped, boundary recognition consistency and robustness are improved, and a stable boundary and the trend region are compared and marked; defect expression intuition and credibility are enhanced, and detection precision and stability are improved.

The invention relates to the technical field of topographic change analysis, in particular to an unmanned aerial vehicle-based topographic change detection system, which comprises a slope direction sensing track control module, a texture structure extraction module, a crack evolution track construction module, a direction trend comparison module and a patrol recheck positioning module. According to the method, a continuous elevation point column of an unmanned aerial vehicle scanning area is extracted, laser reflection point coordinates are fused, a space relation of transition point distribution is constructed, dynamic adjustment of a ground-imitated flight path is achieved, and a texture structure area with continuous directivity is recognized in combination with a high-angle image boundary communication relation; texture boundary evolution is compared at different time nodes to form a crack path, the stability of the path and the slope direction is judged through an included angle sequence, recognition and sorting of areas with the consistent direction are completed, a space comparison result is registered in a three-dimensional coordinate system, terrain change areas are accurately marked, and rapid positioning and continuous tracking of high-risk areas are achieved.

The invention discloses an image edge cutting method and device based on boundary detection, equipment and a storage medium, and relates to the technical field of image boundary detection, and the method comprises the steps: carrying out the preprocessing of an original image, and obtaining a target image; determining a scene type of the target image; based on an edge detection strategy corresponding to the scene type, performing edge detection on the target image to obtain an edge image; performing straight line detection on the edge image to obtain a plurality of candidate straight line segments; and based on a boundary positioning rule, determining a target boundary line segment from the plurality of candidate straight line segments, so as to carry out edge cutting on the original image according to the target boundary line segment. According to the invention, a more reliable image edge cutting effect can be generated.

The invention provides an image region-of-interest extraction method and system based on a Mama architecture, and relates to the technical field of image processing, and the method comprises the steps: obtaining a to-be-extracted image; performing multi-scale feature extraction on the to-be-extracted image through a local enhancement module; multi-scale semantic enhancement features are generated through a cross-scale self-attention module, and dimension reduction processing is performed through a feature conversion module; local detail features are generated through an adaptive detail enhancement module; performing global context enhancement processing on the local detail features through a pyramid pooling module to generate context enhancement features; performing up-sampling processing on the context enhancement features; the context enhancement features after up-sampling processing are fused through a self-adaptive global-local fusion gating module; and carrying out image extraction based on the decoded fusion features. The image segmentation precision is improved, the model is light in weight, reasoning is fast, and the problems of image boundary blurring and scale variability are effectively solved.

The invention discloses a medical image segmentation method based on boundary constraint. The method comprises the following steps: S1, obtaining a medical image amplitude spectrum and a medical image phase spectrum; s2, forming a structure sensing frequency domain disturbance result; s3, obtaining a frequency domain enhanced medical image; s4, calculating structure perception medical image boundary enhanced attention output features; s5, performing global relation modeling and local texture modeling on the frequency domain enhanced medical image sequence; s6, generating an edge heat map; and S7, performing bidirectional gating interaction on the edge heat map and the output of the linear self-attention encoder by adopting a double-domain interaction fusion strategy to generate a double-domain interaction fusion feature map, performing up-sampling and convolution processing on the double-domain interaction fusion feature map in a decoder, and outputting a boundary enhancement segmentation feature map. According to the invention, the structure perception capability of the model in a medical image scene with fuzzy anatomical structure boundary and low texture contrast is effectively improved.

The invention provides an open vocabulary semantic segmentation method and device based on feature interaction and multi-modal data fusion. An SAM encoder of freezing parameters is adopted to extract RGB image and Mask image features in parallel, and boundary information enhancement is carried out through a feature fusion module. A CLIP image encoder of freezing parameters is used for carrying out multi-layer feature extraction on an RGB image, and multi-scale semantic information optimization is carried out through a feature enhancement module. And fusing image features extracted by the SAM branch and the CLIP branch through a feature interaction module to realize cross-network feature complementation. In a prediction stage, a category integration strategy combined with a temperature scaling operation is introduced to optimize prediction effects of known and unknown categories. According to the method, the advantages of SAM in the aspect of image boundary extraction and the image-text alignment capability of CLIP are combined, and the generalization capability and robustness of the model in an open vocabulary semantic segmentation task are effectively improved through multi-modal feature fusion and interaction.

The invention relates to the technical field of anomaly detection, in particular to a circuit board processing anomaly detection system which comprises an image anchoring module, a gray scale comparison module, a candidate area screening module, a gradient closing verification module and a behavior track evolution module. According to the method, by setting the gray scale anchor points in the image frames and collecting the standard gray scale values, deviation accumulation caused by the overall illumination change of the image can be effectively avoided, the response delay area is recognized through inter-frame gray scale comparison, and early intervention on the etching abnormal process is achieved; a gray scale fluctuation low-amplitude segment in an image boundary region is extracted to recognize a texture missing region, the recognition accuracy of structural blur is enhanced, fine extraction of an abnormal structural form is realized in combination with gray scale gradient chain construction and a closed error judgment mechanism, region response change trajectory tracking in a frame sequence is superposed, and the recognition accuracy of structural blur is improved. Therefore, the judgment is not limited to single-frame anomaly detection and has a time sequence evolution recognition capability, an abnormal symptom region is stably captured, and a reliable detection result is generated.

The invention discloses an electric arc three-dimensional reconstruction system and method based on binocular vision. The system comprises a double-camera image acquisition module, a correction module, a boundary contour point extraction module and a three-dimensional reconstruction module. The dual-camera image acquisition module completes dual-camera parameter calibration and dual-vision arc image shooting operation at different positions; the correction module corrects an optical distortion area and a breakpoint area of the double-vision arc image to obtain a corrected double-vision arc image; the boundary contour point extraction module adopts a third-order Bezier curve to perform segmentation fitting on the boundary contour of the corrected double-vision arc image to obtain continuous double-vision arc boundary points; and the three-dimensional reconstruction module reconstructs a three-dimensional contour line of the electric arc through a triangulation method according to the camera calibration parameters and the double-vision electric arc boundary points, and generates a corresponding three-dimensional point cloud data set. According to the method, the distortion and breakpoint phenomena of the arc image can be repaired, and high-precision reconstruction of three-dimensional data of the arc is realized.

The invention discloses a PCB semantic segmentation method fusing ResNet and an attention mechanism. The method comprises the following steps of performing defect segmentation area cutting and data enhancement on a PCB image; carrying out image smoothing filtering on the enhanced PCB defect image data set by adopting a generalization edge preserving and structure preserving image smoothing model, and inputting a UNet model encoder to extract defect area features; performing layer-by-layer down-sampling on the defect area features to obtain initial feature maps of different scales; inputting the initial feature maps of different scales into a CBAM module according to corresponding levels, and adding the feature maps processed by the CBAM attention mechanism with the initial feature maps of different scales by the CBAM module; and the UNet model decoder obtains the feature map of each layer of the CBAM module, recovers the image resolution layer by layer, obtains an image boundary, and outputs a defect segmentation result. According to the invention, the segmentation precision of PCB image detection can be improved.

The invention relates to the technical field of image recognition, in particular to an unmanned aerial vehicle tracking system and method based on image recognition, and the system comprises a spectrum optimization module, a trajectory analysis module, a form adjustment module, a flight anomaly detection module and a tracking optimization module. According to the method, the brightness information of the ambient light and the reflected light of the unmanned aerial vehicle is finely analyzed and the spectral response of the image is adjusted, so that the image definition is greatly improved, the unmanned aerial vehicle can be accurately identified under various illumination conditions, and the flight path of the unmanned aerial vehicle is calculated in real time by accurately analyzing the image bounding box and timestamp information of the unmanned aerial vehicle. According to the method and the system, the tracking process is ensured to be continuous and accurate, any form change is effectively captured by continuously monitoring the form of the unmanned aerial vehicle in continuous image frames, the behavior mode change of the unmanned aerial vehicle is responded in time, and in the aspect of flight abnormity monitoring, behaviors inconsistent with a conventional flight mode can be accurately analyzed, and potential security threats can be identified in time.

A method for detecting an image boundary using a generative adversarial network (GAN) model is provided. The GAN model includes a generator network and a discriminator network. The method includes the following steps. The GAN model is trained using a plurality of image pictures to obtain a weight value, an average value of a generator network loss parameter, and an average value of a discriminator network loss parameter. A generator network is updated with a first loss parameter, wherein the first loss parameter is a weighted sum of the average value of the generator network loss parameter and the average value of the discriminator network loss parameter. The discriminator network is updated with a second loss parameter, wherein the second loss parameter is the average value of the discriminator network loss parameter.

Aspects of the disclosure provide methods and apparatuses for video encoding / decoding. In some examples, an apparatus for video decoding includes receiving circuitry and processing circuitry. The processing circuitry receives a bitstream carrying a plurality of pictures, and determines at least a motion compensation padding (MCP) block that is located in an MCP area outside of a picture and next to a picture boundary of the picture. The processing circuitry derives, according to a plurality of candidates with positions located at the picture boundary within the picture, a motion vector of the MCP block for motion compensated boundary padding, and reconstructs at least a sample in the MCP block according to the derived motion vector for the motion compensated boundary padding.

The invention discloses an agricultural land boundary extraction method and system fusing SAM and an improved Segform model, and relates to the technical field of image processing, and the method comprises the steps: carrying out the polygonal ground feature extraction of a preprocessed image tile data set through employing the SAM model; inputting the agricultural land sample data set into an improved Segform model for optimization, and then performing agricultural land boundary extraction; the improved Segform model takes the Segform model as a basic network structure, a feature fusion module fuses high-level semantic information, a DySample ultra-light dynamic up-sampling module is adopted to generate sampling points, and a DANet dual attention mechanism and an ECA channel attention mechanism are added for feature optimization. According to the method, on the basis of high-resolution image data, refined extraction is carried out on the boundary of the remote sensing image by fusing an SAM large network model and an improved Segform model.

Provided are a display method of a head-up display and a head-up display. The display method of the head-up display includes the following steps: an original image is received; an image boundary of the original image is corrected based on projection surface distortion data to generate a corrected image; multiple first sub-light-emitting regions corresponding to an image boundary of the corrected image are determined; light emitting data are adjusted based on display boundary data to increase brightness values corresponding to the multiple first sub-light-emitting regions in the light emitting data, and brightness values of multiple second sub-light-emitting regions corresponding to a non-display region in the light emitting data are set as 0; and a display module is driven based on the corrected image and an adjusted light emitting data. The display method of the head-up display and the head-up display of the disclosure may achieve good display effects.

Systems and methods for image processing (e.g., image extension or image uncropping) using neural networks are described. One or more aspects include obtaining an image (e.g., a source image, a user provided image, etc.) having an initial aspect ratio, and identifying a target aspect ratio (e.g., via user input) that is different from the initial aspect ratio. The image may be positioned in an image frame having the target aspect ratio, where the image frame includes an image region containing the image and one or more extended regions outside the boundaries of the image. An extended image may be generated (e.g., using a generative neural network), where the extended image includes the image in the image region as well as generated image portions in the extended regions and the one or more generated image portions comprise an extension of a scene element depicted in the image.

The invention relates to the technical field of wearable monitoring, in particular to farm intelligent wearable inspection equipment, which comprises a track thermal difference recognition module, an abnormal target labeling module, a high fever behavior screening module, an image information extraction module, a structure label generation module and an individual inventory recognition module. According to the invention, by extracting the infrared temperature measurement data and calculating the thermal fluctuation difference value, the positioning of a temperature abnormal section is realized, the identification capability of tiny thermal environment variation is enhanced, the high-heat target area is positioned, the image filing is completed, and the target screening accuracy and the image utilization efficiency are improved. Static high-heat individuals are identified based on the calorific value state and the spatial position stability, the discovery probability of potential abnormal objects is improved, through image boundary contour extraction and structural feature comparison, the individual identification efficiency is improved, and image information and dynamic path data are synchronously analyzed, so that the monitoring result is more continuous and complete, and the detection accuracy is improved. And the intelligent response capability and the information processing depth are improved.

The invention provides a model training method and a lesion image segmentation method and device, and belongs to the technical field of medical image analysis. The model training method comprises the following steps: constructing a U-shaped image segmentation network, the U-shaped image segmentation network comprising an encoder and a decoder; wherein the encoder is used for encoding the lesion image to obtain an encoding feature; the decoder is used for decoding the coding features to obtain a decoded lesion image; a boundary key point of a lesion area in the real lesion image is extracted through a differential evolution boundary enhancement module, and a boundary area of the real lesion image is obtained; and based on the loss of the boundary region of the decoded lesion image and the real lesion image and the loss between the decoded lesion image and the real lesion image, optimizing the parameters of the U-shaped image segmentation network, the parameter-optimized U-shaped image segmentation network being used for lesion image segmentation. The model obtained by training based on the method can realize image segmentation with low parameter quantity, low calculation load and high precision.

The invention provides an urban digital twinning modeling method and system based on multi-source heterogeneous data fusion, and relates to the technical field of digital twinning, and the method comprises the steps: obtaining a registration image and a registration point cloud of a target region, respectively extracting an image boundary candidate and a point cloud boundary candidate, generating a boundary uncertain band for each boundary candidate, and carrying out the boundary uncertain band extraction; determining an uncertain band width and an offset direction identifier; boundary matching pairs are formed according to the spatial intersection relation, and intersection sections with opposite bias direction identifications are determined as a confrontation boundary section set; for each confrontation boundary section, determining an image confidence weight and a point cloud confidence weight, and generating a boundary judgment result according to the image confidence weight and the point cloud confidence weight; and performing topological consistency verification on a boundary judgment result, and determining a unique fusion boundary. According to the method, under the condition that local physical characteristic difference and systematic geometric deviation exist in multi-source data, the geometric edge fusion precision and topology reliability can be improved, and the stability and availability of the urban digital twin model are enhanced.

The invention belongs to the related technical field of computer vision and three-dimensional reconstruction, and discloses a construction method of a normal vector prediction model based on contact surface rendering and a three-dimensional reconstruction method. The method comprises the following steps that a real image generated when a calibration ball in an actual scene makes contact with a sensor serves as input, normal vectors of all points in a contact area serve as output to train a normal vector prediction model, and the trained normal vector prediction model is the needed normal vector prediction model. Acquiring a real contact image of the object and the sensor in an actual scene, predicting a normal vector of each point on the surface of the contact object by using the normal vector prediction model, and calculating the depth of each point on the surface of the contact object by using the normal vector and the depth prior by taking the image boundary depth as the depth prior. And three-dimensional coordinates of all points on the surface of the contact object are obtained through depth calculation, so that three-dimensional reconstruction of the contact object is realized. According to the invention, the problems of difficult acquisition of a real normal vector and large integral error of the normal vector during calibration are solved.

The invention discloses a double-flow fault diagnosis method based on state space modeling and dynamic edge context awareness, the method constructs a time domain state flow and a time frequency edge flow, and the specific implementation process is as follows: the time domain state flow is subjected to state space modeling under a Transform framework to form a MambaT encoder, long and short term dependence is efficiently captured with linear complexity, and the time domain state flow is subjected to dynamic edge context awareness; time domain sensitive features are accurately represented; the time-frequency edge stream converts vibration data into a two-dimensional time-frequency image through wavelet transformation, a differentiable edge sensitive mask is designed to adaptively separate time-frequency image impact characteristics and background noise, boundary content perception adaptive filling is designed to maintain image boundary topology integrity, and the two parts cooperate to form dynamic edge context perception convolution, so that the image boundary topology integrity is improved. Time-frequency edge features are effectively extracted; and a channel enhancement and channel gating module is designed to establish a dynamic channel interaction gating mechanism, so that time domain-time frequency domain double-current cascade characterization is realized, and the fault discrimination capability is remarkably improved. Experiments prove that the method has higher fault diagnosis performance.

The invention discloses a disaster site multi-dimensional image cooperative processing method based on unmanned aerial vehicle-satellite cooperation. Acquiring multi-source heterogeneous image data, performing time-space synchronization preprocessing, and realizing timestamp correction by constructing a communication delay prediction model; then establishing a three-dimensional evaluation system based on time evidence, space evidence and consistency evidence by adopting a boundary evidence intensity driven segmentation processing strategy, and carrying out differential registration processing on the image boundary; then realizing balance between boundary information keeping and continuity under a constraint optimization framework through a boundary continuity constraint propagation mechanism and a sliding window reconstruction technology; and executing multi-dimensional image fusion of quality perception, and outputting a high-precision disaster situation map and a loss evaluation result. According to the method, the technical problems of low image registration precision and'ghost boundary 'generated by boundary fusion under heterogeneous timestamps are solved, and the accuracy and reliability of disaster loss assessment are improved.

The invention discloses a sleeve grouting quality detection method and system based on multi-modal data fusion, and belongs to the technical field of grouting quality detection.The method comprises the steps that a visual image sequence, an acoustic emission signal sequence and local temperature dot matrix data are synchronously collected in the grouting process, and a multi-modal input set is formed; image boundary change, acoustic jump features and a thermal diffusion track are extracted respectively, a fusion feature vector is constructed and input to a space-time heterogeneous coupling network, and a local grouting dynamic anomaly map is generated; then, residual confidence fusion analysis is carried out, a defect scoring graph is output, and intelligent judgment of defect positions and types is achieved in combination with grouting flow direction topological information; the method can realize accurate identification, classification and visual positioning of grouting defects, and is suitable for scenes such as quality monitoring of an assembly type structure.

The invention discloses an ultrasonic image boundary perception segmentation method, system and device, and relates to the field of image processing, and the method comprises the steps: obtaining an ultrasonic image, and sequentially processing the ultrasonic image through a block embedding module and an image coding module to obtain spatial domain features; performing frequency domain feature extraction processing on the spatial domain feature by using a preset multi-scale frequency extraction strategy to obtain a fine-grained high-frequency feature, a coarse-grained high-frequency feature and a low-frequency feature, and obtaining a frequency fusion feature in combination with a preset frequency alignment strategy; a preset frequency guide boundary refining strategy is combined to determine refining features; and according to the refined features and a preset boundary guiding decoding strategy, determining a segmentation mask representing a result of segmenting the target region under the ultrasonic image from the background region. A low-frequency structure and multi-scale high-frequency boundary details are explicitly separated through frequency domain decomposition, an ultrasonic image boundary sensing segmentation scheme based on frequency guidance is provided, the boundary sensing ability is high, and the cross-domain generalization ability is high.

A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a flag and a picture including a sub-picture with a sub-picture boundary. The sub-picture is decoded. Filtering operations are performed across the sub-picture boundary when the flag is set to a first value. The filtering operations across the sub-picture boundary are omitted when the flag is set to a second value. The sub-picture is forwarded for display as part of a decoded video sequence.

According to the image calibration and splicing method based on sub-pixel reconstruction and elliptic coefficient weighting, a super-resolution reconstruction module is introduced before image array splicing, the splicing precision is improved through sub-pixel-level image registration, and the splicing precision better than that of a single pixel unit can be achieved. Aiming at the problems of edge dislocation and stiff transition existing in multi-camera array system view field splicing, the invention provides a weighted splicing algorithm based on an elliptic coefficient, and the algorithm constructs an elliptic gradient weight model, realizes smooth transition of an image boundary region, and remarkably improves the overall visual effect of a panoramic image.

The invention relates to the technical field of multi-modal fusion, in particular to an automatic driving complex scene sensing method based on multi-modal fusion, which comprises the following steps of: acquiring an image bounding box and a point cloud cluster center position, identifying and pairing space overlapping targets, analyzing direction change to extract a track difference frame segment, and extracting a track difference frame segment; the edge trend and point cluster arrangement are linked to divide modal sources, contact areas and modal attribution are concluded according to side lines, and a perceptual path sorting framework is constructed according to an arrangement fusion sequence. According to the method, a cross-modal target association relationship is constructed through spatial overlapping pairing of an intra-frame image and a point cloud modal target, track difference fragments are extracted through a continuous frame direction change sequence, behavior change positions are distinguished, and modal sources are divided through conjoint analysis of an edge trend and a point cluster arrangement trend; and establishing an association matching relationship between a modal and a scene component through extraction of a contact area, arranging a fusion sequence through contact expression of the modal in a difference frame segment, and constructing a perceptual path sorting framework with distinguishing capability.

The invention discloses a steel structure drilling deviation real-time correction method based on visual identification, and relates to the technical field of drilling deviation analysis, and the method comprises the steps: collecting a steel structure image before drilling, and calculating an image center coordinate value and image boundary included angle information of a current drilling target position based on a hole position contour and an edge line segment in the image; constructing a deviation reference set containing the historical drilling task number, the image center coordinate value and the image boundary included angle information, and based on the current image center coordinate value and the image boundary included angle information, retrieving a plurality of spatially adjacent reference records from the deviation reference set to generate a first local deviation estimation value; an image sequence before feeding of the drill bit in the drilling process is collected, and a second local deviation estimated value is output based on a local image block of a contact area between the edge of a drill bit cone and the surface of the component in the image sequence; real-time deviation correction and path continuity control in the steel structure drilling process are achieved.

The invention discloses a point cloud and image fused robot structure modeling method and system. Firstly, the invention provides an image boundary guided point cloud clustering method, image edge and region consistency features are fused, edge consistency loss and clustering contour score are taken as a joint optimization target, and the problems that pure point cloud clustering is fuzzy in component boundary and easy to merge in texture similar structures are solved; and the separation precision of key connecting parts is obviously enhanced. Secondly, the invention innovatively provides a motion consistency analysis mechanism driven by a time sequence and an image, carries out linkage optimization on a spatial clustering result under the guidance of the image and a multi-frame motion track, constructs a motion correlation graph, and deduces the structural topology of the robot based on a minimum spanning tree. And high-robustness component connection relation restoration is realized under the condition of no label supervision. The strategy is excellent in performance on simulation and physical data sets, and the topology accuracy is improved by 6.2%.