80 results about "Shadowings" patented technology

The present disclosure relates to systems, methods, and non-transitory computer-readable media that performs shadow removal and harmonizes lighting properties of a foreground with a background. Furthermore, the disclosed systems receive a shadow removal request for an input digital image that includes a foreground object with a shadow occluding at least part of the foreground object. Moreover, the disclosed systems generate a combined embedding from a mask of the foreground object and the input digital image. Further, the disclosed systems generate a modified digital image without the shadow occluding at least part of the foreground object and lighting properties of the foreground object harmonized with lighting properties of a background.

The invention relates to the technical field of mine lighting, in particular to an intelligent mining intrinsically safe LED lighting lamp strip and a lighting system.The lamp strip comprises an insulation assembly, a plug-in assembly and a lighting assembly, and the system comprises a production judgment module, a light attenuation judgment module, a lighting regulation and control module, a regulation and control detection module, a shadow judgment module and a shadow compensation module; the system predicts a high-dust working condition through vibration analysis and evaluates light attenuation by fusing dust concentration and coal rock absorbance; regulating and controlling the brightness and spectrum of the lamp strip according to the evaluation result; the regulation and control effect is verified through closed-loop detection; identifying a dynamic shadow area based on the equipment pose and the light field distribution; and finally, in combination with the gas concentration safety constraint, performing safety-first local compensation or brightness-first overall brightening on the shadow area. The problems that instantaneous light attenuation caused by cooperation of dust outbreak at the moment of cutting and strong light absorption of a coal wall cannot be effectively handled, and dynamic shielding shadow caused by movement of a huge machine body of mining equipment cannot be effectively handled are solved.

The invention relates to the technical field of agricultural illumination, in particular to an illumination light supplementing method and system for agricultural detection. According to the method, the shadow is used as a valuable information source containing space prior, and the feature representation capability is enhanced through explicit modeling of a shadow detection task. A shadow guide gating fusion mechanism is provided, and the feature weight is dynamically adjusted according to whether the spatial position is in a shadow area or not, so that adaptive enhancement is realized. And the mechanical arm serves as a light source carrier, flexible adjustment of the light supplementing position and intensity is achieved through double fuzzy PID control, and illumination light supplementing is conducted on the shadow part of the target area in the sight line. According to the method, the performance and the robustness of an agricultural visual inspection system are remarkably improved.

This invention provides a dust concentration detection device and measurement method for underground drilling in coal mines. It includes a hemispherical glass body with an open top, containing a cleaning unit. The cleaning unit includes a vertically arranged annular cleaning frame, the center of which is collinear with the axial centerline of the glass body. A motor support frame is coaxially mounted on the top of the glass body, forming a spherical body with a hollow top. The bottom of the motor support frame is connected to the glass body, and its vertical top is connected to a coaxially mounted sleeve. An explosion-proof motor is also coaxially mounted inside the sleeve, with its output shaft connected to the top of the cleaning frame. The output shaft drives the cleaning frame to rotate around the central axis of the glass body. A point light source is also coaxially mounted on the inner top of the cleaning frame. A shadow sensor is also installed on the outer bottom wall of the glass body. The device of this invention has a fast response speed and can quickly capture instantaneous shadow changes, thereby achieving real-time continuous measurement.

This invention discloses an efficient 2D dynamic soft shadow rendering method and system based on symbolic distance fields, belonging to the field of computer graphics and image processing technology. It includes extracting displacement vectors to determine active occlusions and generating bounding boxes to be updated; downsampling and reconstructing within the bounding boxes and concatenating with an external buffer to generate a low-resolution symbolic distance field; calculating a local original resolution symbolic distance field within the same region; calculating and normalizing the difference matrices of the two types of distance fields to generate a fusion weight matrix; and using the weight matrix to weightedly superimpose the two types of distance fields, performing ray propagation to output shadow textures. This invention uses bounding boxes established based on inter-frame displacement vectors to lock dynamic regions and constructs pixel-by-pixel fusion weights through multi-level resolution distance difference matrices to achieve smooth superposition of heterogeneous field data. This significantly reduces scene reconstruction overhead while eliminating visual seams caused by incremental updates, outputting high-quality and spatiotemporally continuous 2D soft shadow effects.

The invention relates to the field of tower-type solar power generation, and discloses a tower-type photo-thermal mirror field shadow shielding efficiency rapid calculation method, which comprises the following steps: dividing a mirror field into a plurality of square grids according to coordinate data of heliostats, and determining the grid to which each heliostat belongs; for each heliostat, determining a neighbor heliostat of the heliostat; re-dividing the heliostat field into a plurality of square grids, and randomly selecting a heliostat from each grid as a typical heliostat; for each typical heliostat, calculating the shadow shielding proportion generated by the neighbor heliostat, and taking the shadow shielding proportion of the typical heliostat as the shadow shielding proportion of the grid where the typical heliostat is located; and the shadow shielding proportions of all typical heliostats are calculated, so that the shadow shielding efficiency of the whole heliostat field is calculated. According to the method disclosed by the invention, the calculation speed of the shadow shielding efficiency is improved while the calculation precision is ensured, and the balance point of the calculation precision and the calculation speed can be adjusted through different values of the parameters.

The present disclosure relates to systems, methods, and non-transitory computer-readable media that detects shadows, removes shadows, and synthesizes shadows in a joint-framework. In particular, the disclosed systems access an object mask of an object and a digital image depicting the object and a shadow of the object. Furthermore, the disclosed systems perform object-centered shadow detection and removal to generate a modified digital image without the shadow by utilizing a shadow analyzer model. Moreover, the disclosed systems receive a user interaction to manipulate an object and generate a modified shadow utilizing a shadow synthesis model where the shadow synthesis model is conditioned on a shadow mask generated by the shadow analyzer model.

1. The name of the design product: the bottom of ceiling lamp. 2. The use of the design product: the whole is used for lighting, and the local design is the bottom of ceiling lamp. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: design 1 perspective view. 5. Design 1 is designated as the basic design. 6. Other circumstances that need to be explained: the dotted line does not constitute part of the claimed design. The gray shadow represents the outline, which is not a surface pattern or a color itself.

The invention discloses an image shadow removing method and device for generating an image shadow based on a GAN model, a storage medium and a program product. Two-stage models are adopted, the first-stage model is a shadow generation model, the second-stage model is an image shadow removal model, the shadow generation model adopts a GAN model architecture, and shadows very similar to real shadows are generated by using the GAN model, so that image pairs with shadows and without shadows can be prepared on a large scale; the technical route of removing the image shadow by adopting a deep learning method is implemented and developed, and many defects caused by removing the shadow by adopting a traditional image processing method are avoided.

An automated lighting system for operating rooms that aims and focuses light into a work area while eliminating shadows. Mounted to a boom system, akin to traditional operating room lights, or a specially made frame, adjustments to the lighting can be made conveniently, with little or no manual adjustment of the lights. The disclosed automated lighting system allows a surgeon to easily define a target region with some type of user interface, then lights automatically adjust based on the surgeon defined target region to illuminate the target region.

This document describes techniques for overcoming problems with shadowing from sensors in an architectural linear continuous run light fixture. A split sensor is described to detect occupancy, daylight, and infrared, the sensor is formed to a minimal profile to eliminate shadowing in a seamless run over the length of the lighting fixture.

This disclosure provides a method, apparatus, computer device, and storage medium for generating textures. The method includes: acquiring a three-dimensional model of a target object, an original shadow texture corresponding to the three-dimensional model, and a shadow tendency texture; performing a correction process on the original shadow texture based on the lighting direction corresponding to the three-dimensional model to obtain a target shadow texture corresponding to the three-dimensional model; and performing a light and shadow mapping process on the target shadow texture using the shadow tendency texture to obtain a shadow color texture corresponding to the three-dimensional model.

The invention discloses a shadow target tracking performance evaluation method suitable for multiple scenes, and belongs to the technical field of artificial intelligence and computer vision. According to the method, a TSD reference data set containing 200 video sequences and about more than 50000 frames is constructed aiming at the defect of shadow tracking of an existing evaluation system under multiple scenes, bounding box labeling is carried out on each frame, and the frames are divided into four shadow scene types including planes, snowfields, grassland and mountainous regions. The evaluation framework adopts a mixed protocol, and tests 20 mainstream tracking algorithms in combination with the precision rate and the success rate of single-pass evaluation and an average precision index in four scenes. Experimental results show that few algorithms are excellent in performance, but all the algorithms are not prominent in performance, and the performance bottleneck of an existing algorithm is revealed. According to the method, the shadow data set under multiple scenes is constructed, a standardized evaluation scheme is provided for optimization of an object shadow target tracking algorithm, and application of related technologies in unmanned driving technologies and other scenes can be promoted.

The application provides a rendering method and device of indoor shadow and electronic equipment, determines a first intersection point of a target pixel point on a window model along a viewing angle direction and an indoor plane; determines a second intersection point of the first intersection point along a light direction and the window model; determines a first shadow value and a second shadow value of the first intersection point according to the second intersection point and a preset window map; determines a third shadow value of the first intersection point according to the occlusion of an outdoor object and the first intersection point in the light direction; and renders the indoor plane based on the first shadow value, the second shadow value and the third shadow value. In this way, the light transmittance of the window and the light occlusion of the outdoor object are used to determine the wall shadow of the indoor plane, the window frame shadow and the shadow of the outdoor object in the indoor plane, so that the light and shadow effects in the virtual scene are more realistic, and the virtual scene is more realistic, immersive and experienced.

This lighting device reduces the weight of individual components, improving ease of installation and facilitating safety during operation. [Solution] Multiple lighting devices 11 are installed as light sources, and the mounting frame 20, panel, and cover are installed as separate components, thereby reducing the size and weight of each component and improving ease of installation. Furthermore, the effects of uneven lighting and shadows are suppressed by the degree of diffusion of the panel and the spatial distance between the light source and the panel.

Embodiments of the present application disclose a shadow adjustment method, device, equipment and storage medium. The method comprises: when a shadow adjustment event is detected, obtaining a generated shadow corresponding to the shadow adjustment event and an irradiated object irradiated by a light source; according to a positional relationship between the generated shadow and the irradiated object, separating a to-be-adjusted shadow located on the irradiated object from the generated shadow; and adjusting the to-be-adjusted shadow to obtain an adjusted shadow. The technical solution of the embodiments of the present application separates the to-be-adjusted shadow that may make the irradiated object appear very black from the generated shadow, and adjusts the to-be-adjusted shadow, thereby solving the problem that the generated shadow covering the irradiated object is greatly different from the real world. Meanwhile, the shadow adjustment process can be completed before rendering, thereby achieving the effect of saving computing power.

Fluence non-uniformities across a surface portion of a target (organism or inanimate object) due to inherent non-uniformities in the irradiation beam and / or shadowed target surfaces, are known to limit the effectiveness of target kinetic processes responsive to wave energy irradiation (electromagnetic, EM, elastic, EL, and / or quantum particle, QP). A field of scattering particles (e.g., bubbles in water, aerosols such as dry fog, powders, etc.) is constructed spatially / temporally in the vicinity of the target and in the path of propagating wave energy to improve the fluence coverage and thereby enhance the overall effectiveness of the kinetic process. The scatterers can be added to an existing irradiation system (retrofit application) or added to the design of a new system (forward fit). Novel dosimeters and methods of dosimetry are also disclosed to more accurately characterize the fluence received over complex surfaces.

The present application relates to the technical field of computer vision, more particularly, to a shadow detection method and device based on attention mechanism and federated learning. The present application adopts attention feature fusion, generates an attention map according to the information in the deep feature maps of the encoding end and the decoding end, can judge whether the information in the encoding end skip connection feature map is conducive to the goal of shadow detection, suppresses irrelevant features, enhances effective features, avoids important information loss, generates more accurate decoding end features, and further strengthens the recognition ability of the artifacts in the image. The present application performs federated learning after each round of training, indirectly introduces the corresponding feature information extracted by the models of other data sets through the method of averaging the model parameters of different data sets in the same round of training, effectively improves the test effect of the model on other data sets, enhances the generalization ability of the model, and also improves the test effect of the model itself to a certain extent.

The present application relates to the technical field of mine lighting, and more particularly to an intelligent mine-used intrinsically safe LED lighting strip and a lighting system, the lighting strip comprising an insulation assembly, a plug-in assembly and a lighting assembly, and the system comprising a production determination module, a light attenuation determination module, a lighting regulation module, a regulation detection module, a shadow determination module and a shadow compensation module; the system predicts high dust working conditions through vibration analysis, and evaluates light attenuation by combining dust concentration and coal rock light absorption rate; the system regulates the brightness and spectrum of the lighting strip according to the evaluation results; the regulation effect is verified through closed-loop detection; dynamic shadow areas are identified based on the device pose and light field distribution; finally, in combination with the safety constraint of gas concentration, the safety priority local compensation or the brightness priority overall brightening is performed on the shadow area. The present application solves the problems that the instantaneous light attenuation caused by the cooperation of the instantaneous dust explosion and the strong light absorption of the coal wall during cutting cannot be effectively responded, and the dynamic shielding shadow caused by the movement of the large body of the mining equipment cannot be effectively responded.

The method for realizing the shadow function of the server decoration window based on wlroots comprises the following steps: preparing eight pictures for realizing the shadow function and placing the pictures under the root directory; converting the pictures into a shadow_element structure; converting the pictures into a buffer, calling the width, height, step and format data of the pictures from the buffer, and filling the data into the structure of the pictures; converting the structure into a corresponding texture; rendering a rect node, associating the texture of the pictures with the rect node according to the sequence; calculating the actual position of the shadow on the screen; cutting to form a cutting area; and rendering the texture to the cutting area to form the shadow function. The method fully utilizes the existing extended hidden area of the window, does not need to increase the buffer and the rect node, does not need to separately modify the shader and the backend function, ensures the code uniformity, and realizes the shadow function.

The embodiment of the application discloses a shadow generation method and related device, the method comprises the following steps: obtaining the depth data, normal data and illumination data of each point in a virtual scene as the shadow reference data of each point; inputting the shadow reference data of each point into a first convolution filter to obtain the basic shadow data of each point output by the first convolution filter; determining the half-shadow intensity of each point according to the distance from each point to a virtual light source in the virtual scene and the propagation distance of a virtual light emitted by the virtual light source; weighting the basic shadow data of each point by using the half-shadow intensity of each point to obtain the weighted shadow data of each point; and the weighted shadow data is used for shadow rendering for the points. The method can improve the setting efficiency of the shadow effect, and reduces the required artificial cost and time cost.

The height measurement method based on building shadow recovery relates to the technical field of optical remote sensing image processing, and solves the problem of improving the building height measurement accuracy in high-resolution remote sensing images. The method comprises the following steps: extracting the building shadow in the remote sensing image through a semantic segmentation network, rotating the remote sensing image and the building shadow according to the sun azimuth so that the shadow line is perpendicular to the horizontal direction; dividing the rotated building shadow into a region adjacent to the top of the building, a region adjacent to the side of the building, and a region adjacent to the bottom of the building; recovering the building shadow in the divided regions to obtain the actual length of the recovered shadow; obtaining the actual length sequence of the recovered shadow along the horizontal direction, calculating the height sequence of the building; and calculating the height of the building according to the height sequence of the building. The present application realizes more accurate building height measurement.

A shadow rendering method and apparatus, an electronic device, and a readable storage medium are provided, which belong to the field of image rendering technologies. The method includes: determining the scene ranges corresponding to the plurality of first levels (201); determining, for any one of the plurality of first levels, a first virtual item corresponding to the first level based on a scene range corresponding to the first level (202); determining a projection depth map corresponding to the first level based on the first virtual item corresponding to the first level, the projection depth map corresponding to the first level being configured for describing distances between a plurality of first vertices and a light source (203); and rendering a shadow in the first visible scene based on the projection depth map corresponding to the first level (204). In this application, while occupation of storage resources is reduced, the shadow can also be updated in real time, to improve a presentation effect of the shadow and fidelity of the virtual scene.

The invention relates to the technical field of image data processing, in particular to a logistics violation behavior recognition method and device based on a monitoring video, and the method comprises the steps: obtaining an image in a logistics transportation process, extracting a plurality of shadow boundaries, carrying out the region growth through employing the midpoint of the shadow boundaries as a seed point, and generating an initial shadow; if the area ratio of the initial shadow to the shadow boundary is smaller than a set threshold value, removing the initial shadow to obtain a second shadow, and performing behavior recognition on the second shadow by adopting a behavior analysis algorithm; the shadow boundary extraction specifically comprises the steps of corroding a connected domain in an image foreground to obtain a first target, obtaining a second target through subtraction operation, and obtaining points on a unit circle by taking the geometric center of the second target as a circle center to form a feature vector; and mapping the feature vectors into a three-dimensional space for clustering, and calculating a mean value of target values in a cluster to obtain a shadow boundary. According to the invention, the problem of low logistics monitoring accuracy is solved.

The present application relates to the technical field of agricultural lighting, and particularly relates to a lighting compensation method and system for agricultural detection. The present application takes shadow as a valuable information source containing spatial priori, and enhances the feature representation ability through explicit modeling of shadow detection task. A shadow guided gating fusion mechanism is proposed, which dynamically adjusts the feature weight according to whether the spatial position is in the shadow area, and realizes adaptive enhancement. The mechanical arm is taken as a light source carrier, and the flexible adjustment of the light compensation position and intensity is realized through double fuzzy PID control, and the shadow part of the target area in the line of sight is illuminated. The present application significantly improves the performance and robustness of the agricultural visual detection system.

A roofing shingle for installation as part of a roofing structure includes at least one layer of a shingle material having a top surface and a bottom surface. The roofing single will include a headlap portion and an exposure portion having a plurality of tabs with a plurality of granules being applied along the top surface. Shadow lines are defined at selected locations along the top surface of the roofing shingle to provide the roofing shingles with a selected visual appearance.