104 results about "Drop shadow" patented technology

The invention discloses a three-dimensional scene target blanking method and system based on 3DGS, and belongs to the field of computer vision processing. The method comprises the following steps: firstly, performing three-dimensional reconstruction through a multi-view image to generate an original Gaussian point cloud scene; after a scene is divided into foreground and background point clouds based on target text information, spatial expansion is performed on the foreground to generate a three-dimensional soft mask. And projecting the mask to a two-dimensional image space to generate a two-dimensional mask image of each view angle, and inputting the two-dimensional mask image and an original image into an image blanking model to generate a candidate blanking image set. After a user selects a reference image from an initial view angle, a candidate image most similar to a preorder view angle is selected as a final blanking result from a non-initial view angle, and fidelity enhancement is carried out. And finally, optimizing the original Gaussian point cloud parameters by using the blanking result of each view angle to obtain a target three-dimensional scene after blanking. Based on the invention, a user can carry out texture remodeling on the structure of the original three-dimensional scene, and the multi-view consistency of the three-dimensional scene is maintained.

The invention discloses a dynamic scene robust vision SLAM (Simultaneous Localization and Mapping) method based on multi-feature collaborative optimization, which comprises the following steps of: acquiring an image sequence, carrying out dynamic target detection and segmentation through an instance segmentation network, generating a segmentation mask containing a dynamic region mark, and identifying and separating a dynamic object and a static background; removing feature points corresponding to the dynamic object based on the segmentation mask to obtain static feature points; carrying out pose estimation based on the static feature points, and for the key frame, carrying out feature matching with the previous key frame by minimizing a re-projection error, and solving to obtain the camera pose of each key frame; for non-key frames, performing camera pose tracking and data association on the previous frame by adopting an optical flow algorithm, and accumulating solving results to obtain pose tracks of all the non-key frames; the key frames and the non-key frames are subjected to differential processing by fusing feature matching and an optical flow algorithm, so that the calculation efficiency is remarkably improved while the positioning precision is ensured, and the real-time performance is improved.

The invention discloses a text-to-three-dimensional Gaussian shape generation method and device, equipment and a medium, and the method comprises the steps: obtaining an initialized three-dimensional Gaussian model through a pre-trained three-dimensional generator according to the text input for generating a target task; performing multi-view projection to obtain a key view image and a group of auxiliary view images; performing feature extraction on the auxiliary view image, and fusing the extracted features with the features of the key view image through an attention mechanism; performing multi-view joint geometric optimization on the initialized three-dimensional Gaussian model through fractional distillation loss by using the fused features and text input injection diffusion model to obtain a three-dimensional Gaussian model subjected to geometric optimization; and a layered Gaussian constraint mechanism is implemented, reinforced constraint is applied to Gaussian points generated earlier, higher degree of freedom is given to Gaussian points newly added in the later period, and a final three-dimensional Gaussian shape is obtained. According to the method, the geometric semantic consistency and the overall fidelity and fineness of the generated result under different visual angles are improved.

The invention discloses a graph correction method, a storage medium and a storage terminal.The graph correction method comprises the steps that a to-be-corrected layout is provided, and the to-be-corrected layout comprises a plurality of initial to-be-corrected graphs; a first initial to-be-corrected graph and a second initial to-be-corrected graph are obtained from the multiple initial to-be-corrected graphs, and the projection of the first initial to-be-corrected graph and the projection of the second initial to-be-corrected graph in the first direction and the projection of the second initial to-be-corrected graph in the second direction do not coincide; the first direction is perpendicular to the second direction, the first direction and the second direction are parallel to the surface of the to-be-corrected layout, the first initial to-be-corrected graph is provided with a first vertex, the second initial to-be-corrected graph is provided with a second vertex, and the first vertex is opposite to the second vertex; part of the initial to-be-corrected graph is removed, to-be-corrected graphs are generated, the removed area of the initial to-be-corrected graph comprises one or two of a first vertex and a second vertex, and the distance between every two adjacent to-be-corrected graphs meets the requirement of a mask limiting rule; and performing optical proximity effect correction on the to-be-corrected pattern. According to the graph correction method, the precision of the graph is improved.

The invention discloses a real-time dynamic light and shadow rendering optimization method based on an unreal engine, and relates to the field of light and shadow rendering, and the method comprises the steps: firstly distributing shadow importance scores for all grid objects in a scene based on a camera view cone and AI context data, and carrying out the priority ranking of potential shadow projectors; and then, performance budget evaluation is carried out in combination with the current frame rate and the GPU load, and intelligent shadow projector selection and LOD application are carried out on the sorted shadow projection object list according to the performance budget evaluation. And finally, the optimized shadows to be rendered are sent to a light visual angle rendering and VSM page filling process in batches, and a movable light source optimization virtual schlieren is generated. According to the method, the unnecessary calculation overhead is remarkably reduced, so that the rendering efficiency and the frame rate stability are greatly improved while the high-quality dynamic light and shadow effect is ensured, and the core problem that the traditional performance and quality are difficult to balance is effectively solved.

The invention relates to the technical field of virtual reality rendering, in particular to a virtual scene rendering method and device, terminal equipment and a medium. The method comprises the following steps: loading a pre-constructed preform assembly; the preform assembly comprises at least one dynamic object and at least one static object in the scene to be rendered; illumination information of all static objects is bound on the prefabricated body assembly; performing shadow rendering on the at least one static object according to the bound illumination information; and performing shadow rendering on the at least one dynamic object by adopting a plane shadow projection algorithm. According to the method, the illumination baking information is directly mounted on the preform assembly, so that the illumination information can be obtained without baking the static object in the scene again, shadow rendering is performed on the dynamic object by adopting the plane shadow projection algorithm, the dynamic object also has real-time illumination, and the scene is more real. Therefore, the dynamic shadow and the baking shadow in the existing virtual scene can be effectively fused, and the playing experience of a low-configuration equipment user is improved.

The invention discloses an immersive design experience method and system based on VR, and relates to the technical field of virtual reality, and the method comprises the steps: monitoring the position and attitude data of a dynamic object in a scene in real time between continuous rendering frames of the virtual reality scene, the position and attitude data comprising a three-dimensional coordinate, a rotation angle and a scaling; and when it is monitored that the position posture data of the dynamic object changes, determining a first projection area corresponding to the dynamic object in a previous frame rendering cache in a scene based on the position posture data before the change, and defining the first projection area as a shadow erasing area. According to the method, by dynamically monitoring the position and posture change of the object, accurately delimiting the shadow erasing area and the reconstruction area, and only executing shadow clearing and generation calculation on the local area, invalid operation is greatly reduced, calculation complexity is remarkably reduced, rendering efficiency is improved, and shadow updating delay and picture lagging are avoided.

The application discloses a video shadow detection method and device based on a dynamic prompt memory network, which can process confused shadows with the help of a projected shadow object, can aggregate time information without accumulating errors, and comprises a dynamic prompt module and a prompt-based memory module; the dynamic prompt module converts semantic information provided by a visual base model DINOv2 into a shadow mask when direct encoding of a shadow is difficult, local prompting focuses on semantic conversion and identifies a shadow position based on semantic information, and global prompting identifies a shadow boundary based on color and texture information; the memory module is used for solving deformation and long-term time consistency problems, preventing error accumulation, using local prompting as a time matching agent, reducing memory usage, and minimizing dependence on historical shadow masks; and the method can improve detection performance in a complex scene and maintain time consistency of results during long-term detection.

The present disclosure provides a shadow rendering method, apparatus, computer equipment and storage medium for a three-dimensional model, wherein the method comprises: determining a shadow body corresponding to a three-dimensional model in a virtual three-dimensional space; the shadow body is used to indicate a projection rendering range of the three-dimensional model when projecting the three-dimensional model onto a projection surface of a preset object in the virtual three-dimensional space; in response to at least one target vertex on the projection surface being located within the area where the shadow body is located, determining a display shadow intensity corresponding to the target vertex based on second position information of the target vertex in the virtual three-dimensional space and first position information corresponding to the shadow body; rendering the projection surface based on the display shadow intensity corresponding to the at least one target vertex to obtain a shadow rendering result of the three-dimensional model on the projection surface.

The application discloses a sketch representation enhancement method and system based on self-supervised learning, in the image and text feature extraction stage, the sketch is augmented and transformed, the text box content in the sketch is recognized, and the text content and the sketch are encoded respectively to obtain text features and image features; in the sketch representation enhancement stage under the guidance of the text, the text features are used as the basis, and a guide attention unit is applied to enhance the image features; in the contrast self-supervised learning stage, the original image and the augmented sketch enhancement features are mapped into a low-dimensional vector space through a projection function, and the loss is calculated by the low-dimensional vector and the model is optimized.

The invention discloses a training-free gridding video feature compression method. The long video processing efficiency of a multi-modal large model is remarkably improved through space-time fusion and semantic compression technologies. Comprising the following steps: recombining a long video frame sequence into a grid image according to a time sequence, and extracting spatio-temporal joint features by using a visual Transform; calculating cosine similarity based on the global semantic center, and screening the first U key visual marks; and non-key mark information is dynamically fused to the key mark through the normalized weight, so that redundant compression is realized. And finally, aligning the compressed visual mark with a text space through linear projection, splicing the compressed visual mark with task prompt and user query, and inputting the spliced result into a large language model. According to the method, on the premise of being completely free of training, the number of visual marks is reduced, a GPU video memory is reduced, the reasoning speed is increased, meanwhile, the accuracy is improved, the problem of calculation bottleneck in long video understanding is effectively solved, and the method is suitable for plug-and-play deployment of mainstream multi-mode frames such as LLaVA and Video-LLaMA.

1. The name of the design product: projector. 2. The use of the design product: for the projection and play of image, video and the output of audio. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view 1.

Techniques for improving how LSR is performed are disclosed. A service accesses a depth image, a pose correction matrix, and a color image. The service extracts a carrier geometry from the depth image. The service forward projects the LSR carrier geometry by multiplying each vertex of the LSR carrier geometry with the pose correction matrix. While the GPU is operating in a shadow map mode, the service causes the GPU to perform a rasterization process to produce a UV map and a Z buffer. The service discards the UV map, resulting in the per pixel UV corrections included in the UV map also being discarded. The service recovers the per pixel UV corrections using the Z buffer. The service uses the recovered per pixel UV corrections to resample the color image, resulting in generation of a corrected color image.

1. The name of the present design product: projector (five series two). 2. The use of the present design product: for projection. 3. The design points of the present design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

1. The name of the design product: projector (FS210P cloud platform B). 2. The use of the design product: for projection. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

This invention provides a zero-shot anomaly detection method and system based on bidirectional alignment enhancement. The method includes: achieving direct interaction between global and local features through the cross-attention module CAGL; extracting fine-grained local features through the region token alignment module RegionAlign; and projecting global visual semantics onto the text embedding space through the text embedding enhancement module TextAug to generate domain-aware cue words. This invention solves the technical problems of poor generalization ability, neglect of local spatial details, and difficulty in hierarchical modeling of multi-scale visual anomalies.

1. The name of the design product: the front frame part of a projector. 2. The use of the design product: the product as a whole is a projector for projecting video, images, etc.; the part to be protected is the front frame part of the projector. 3. The design points of the design product: the shape shown by solid lines in the perspective view. 4. The picture or photo that best indicates the design points: the perspective view. 5. Other circumstances that need to be explained: the design is a partial design, the part shown by solid lines is the part to be protected as a partial design, and the dashed line is only a line indicating the boundary between the part to be protected as a partial design and other parts. The part other than the part marked in gray in the reference figure is the part to be protected.

1. The name of this design product: Projection information dual-light fusion display graphical user interface for electronic equipment. 2. Purpose of this design product: an electronic device. 3. The key design point of this design product lies in the graphical user interface. 4. The picture or photo that best illustrates the key points of the design: Figure 4 showing the interface change states of Design 1. 5. This design product is a flat product and other views are omitted. 6. Designate Design 1 as the base design. 7. Purpose of the graphical user interface: The graphical user interface of this design is used to display projection information through dual-lamp fusion. Click "Pixel Headlight" in the main view of Design 1 to enter the Design 1 interface change state diagram 1. Click "My Projection" in Design 1 interface change state diagram 1 to enter Design 1 interface change state diagram 2. In the Design 1 interface change state diagram 2, click the "+" on the right side of "My Projection" to enter the Design 1 interface change state diagram 3. Click the "Text Projection" area in Design 1 Interface Change Status Diagram 3 to enter Design 1 Interface Change Status Diagram 4. After editing the text in Design 1 Interface Change State Diagram 4, click the play button below the edited text to enter Design 1 Interface Change State Diagram 5. In the Design 1 interface change state diagram 5, click the setting icon in the upper right corner to enter the Design 1 interface change state diagram 6. Click "One-click fusion" in Design 1 interface change status diagram 6 to enter Design 1 interface change status diagram 7. After the dual lights are successfully integrated, the interface changes from the design 1 state diagram 7 to the design 1 state diagram 8. Among them, the text edited in the design 1 interface change state diagram 4 will be projected externally. Click "Pixel Headlight" in the Design 2 main view to enter the Design 2 interface change state diagram 1. Click "My Projection" in Design 2 interface change state diagram 1 to enter Design 2 interface change state diagram 2. In the Design 2 interface change state diagram 2, click the "+" on the right side of "My Projection" to enter the Design 2 interface change state diagram 3. In the Design 2 interface change state diagram 3, click the "Graffiti Projection" area to enter the Design 2 interface change state diagram 4. After editing the graffiti pattern in Design 2 Interface Change State Figure 4, click the play button below the edited graffiti pattern to enter Design 2 Interface Change State Figure 5. In the Design 2 interface change state diagram 5, click the setting icon in the upper right corner to enter the Design 2 interface change state diagram 6. Click "One-click fusion" in the Design 2 interface change status diagram 6 to enter the Design 2 interface change status diagram 7. After the dual lights are successfully integrated, the interface changes from the design 2 state diagram 7 to the design 2 state diagram 8. Among them, the graffiti pattern edited in the interface change state diagram 4 of Design 2 will be projected externally. The graphical user interface of this design is used to display projection information. Click "Pixel Headlight" in the Design 3 main view to enter the Design 3 interface change state Figure 1. Click "My Projection" in Design 3 interface change state diagram 1 to enter Design 3 interface change state diagram 2. In the Design 3 interface change state diagram 2, click the "+" on the right side of "My Projection" to enter the Design 3 interface change state diagram 3. Click the "Text Projection" area in Design 3 Interface Change Status Diagram 3 to enter Design 3 Interface Change Status Diagram 4. After editing the text in Design 3 Interface Change State Diagram 4, click the play button below the edited text to enter Design 3 Interface Change State Diagram 5. In the Design 3 interface change state diagram 5, click the setting icon in the upper right corner to enter the Design 3 interface change state diagram 6. Click "One-click fusion" in Design 3 interface change status diagram 6 to enter Design 3 interface change status diagram 7. After the dual lights are successfully integrated, the interface changes from the design 3 state diagram 7 to the design 3 state diagram 8. Among them, the text edited in the design 3 interface change state diagram 4 will be projected externally. Click "Pixel Headlight" in the Design 4 main view to enter the Design 4 interface change state Figure 1. Click "My Projection" in Design 4 interface change state diagram 1 to enter Design 4 interface change state diagram 2. In the Design 4 interface change state diagram 2, click the "+" on the right side of "My Projection" to enter the Design 4 interface change state diagram 3. In the Design 4 interface change state diagram 3, click the "Graffiti Projection" area to enter the Design 4 interface change state diagram 4. After editing the graffiti pattern in Design 4 Interface Change State Figure 4, click the play button below the edited graffiti pattern to enter Design 4 Interface Change State Figure 5. In the Design 4 interface change state diagram 5, click the setting icon in the upper right corner to enter the Design 4 interface change state diagram 6. Click "One-click fusion" in the Design 4 interface change state diagram 6 to enter the Design 4 interface change state diagram 7. After the dual lights are successfully integrated, the interface changes from the design 4 state diagram 7 to the design 4 state diagram 8. Among them, the graffiti pattern edited in the design 4 interface change state diagram 4 will be projected externally.

1. Name of the product in this design: Desktop Ornament (Media-Free Holographic Opera Culture D). 2. Application of this design: This design is intended for use in devices for media-free holographic projection and sound playback. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

Systems and methods for generating a simulated scene include generating (1502), by a first diffusion network, a first key frame based on a text description input and a high definition (HD) map input. The first key frame is warped (1504) to a second viewpoint. a second key frame is generated (1506), by a second diffusion network, based on the text description input, the HD map input, and the warped first key frame. A middle frame is generated (1508), by a third diffusion network, between the first key frame and the second key frame based on the text description input, the HD map input, and projections from the first key frame and the second key frame.

The application discloses a kind of line feature-based visual SLAM positioning precision promotion method, including extracting line feature on input image and short line segment is merged;Line feature is grouped according to angle to improve line feature matching speed;Angle and length threshold are set to screen line feature;The distance of candidate point and other line features is calculated, remove the outlier greater than threshold, calculate the center point as vanishing point to make the variance of in-point minimum;According to the coordinate variation of vanishing point, judge whether the motion of camera occurs rotation;Angle threshold is set, and the line feature with the included angle less than threshold is filtered out;Line feature is grouped according to angle to speed up the matching process of line feature after filtering;Normalize parameter is calculated by line feature endpoint;The camera pose is calculated by iteration to minimize the reprojection error.The application filters out the degenerate line feature by setting angle threshold, avoids the influence of degenerate line feature on pose calculation, and improves the accuracy of camera pose calculation by solving camera pose iteratively.

1. Name of the product in this design: Elevator status indicator with dynamic graphical user interface for elevator status. 2. Purpose of this design: To display the elevator status on the side of the lobby and project the elevator status onto the ground. 3. The key design features of this product are: the shape of the elevator status indicator and the content and layout of the graphical user interface displayed in the elevator status indicator. 4. The image or photograph that best illustrates the key design points: Design 1 3D view. 5. Design 1 is designated as the basic design. 6. Purpose of the graphical user interface: This graphical user interface is used to display the elevator status. Starting from the main view of Design 1, when the elevator is descending, the interface changes to the Design 1 state diagram; starting from the main view of Design 2, when the elevator is ascending, the interface changes to the Design 2 state diagram; starting from the main view of Design 3, when the elevator door opens, the interface changes to the Design 3 state diagram; starting from the main view of Design 4, when the elevator is overloaded, the interface changes to the Design 4 state diagram; starting from the main view of Design 5, when the elevator is fully loaded, the interface changes to the Design 5 state diagram; starting from the main view of Design 6, when the elevator is under maintenance, the interface changes to the Design 6 state diagram; starting from the main view of Design 7, after changing the wallpaper, the interface changes to the Design 7 state diagram; starting from the main view of Design 8, when it rains, the interface changes to the Design 8 state diagram; starting from the main view of Design 9, at night, the interface changes to the Design 9 state diagram; starting from the main view of Design 10, when an earthquake warning is issued, the interface changes to the Design 10 state diagram. The characters or patterns in the interface are variable. 7. Other situations requiring explanation: The front, rear, left, right, top, bottom, and perspective views of Designs 2 to 10 correspond to the same as those of Design 1. Therefore, the front, rear, left, right, top, bottom, and perspective views of Designs 2 to 10 are omitted. Design 1, reference figure 1 shows the system update status; Design 1, reference figure 2 shows the remote control status; Design 1, reference figure 3 shows the elevator descending status; Design 1, reference figure 4 shows the passenger arrival status when the elevator is descending; Design 1, reference figure 5 shows the elevator guidance status when the elevator is descending; Design 2, reference figure shows the elevator ascending and about to arrive status; Design 5, reference figure shows the elevator fully loaded status; Design 6, reference figure shows the elevator maintenance status; Design 10, reference figure shows the earthquake early warning status.

The application discloses a kind of quantum chip layout graphic spacing mark method, storage medium and electronic equipment.The method comprises the following steps: obtaining at least part of two edge lines in the preset distance range in all graphics of quantum chip layout;With the first edge line as the bottom, a first projection area is constructed on the preset side relative to the graphic to which it belongs according to the preset distance, and a second projection area is constructed on the preset side relative to the graphic to which it belongs according to the preset distance with the second edge line as the bottom, and the preset side of the two edge lines is opposite to each other;Determine the coincident intersection point of the first edge line in the second projection area, and determine the coincident intersection point of the second edge line in the first projection area;Generate an enclosing region enclosing the coincident intersection point of the two edge lines, and perform error marking.The application can automatically complete spacing error marking, improve the marking efficiency.

Techniques for improving how LSR is performed are disclosed. A service accesses a depth image, a pose correction matrix, and a color image. The service extracts a carrier geometry from the depth image. The service forward projects the LSR carrier geometry by multiplying each vertex of the LSR carrier geometry with the pose correction matrix. While the GPU is operating in a shadow map mode, the service causes the GPU to perform a rasterization process to produce a UV map and a Z buffer. The service discards the UV map, resulting in the per pixel UV corrections included in the UV map also being discarded. The service recovers the per pixel UV corrections using the Z buffer. The service uses the recovered per pixel UV corrections to resample the color image, resulting in generation of a corrected color image.

The invention relates to a dynamic vision SLAM (Simultaneous Localization and Mapping) optimization method and device. A bounding box detection result is divided into a prior dynamic object detection box and a static object detection box according to semantic information in an RGB (Red, Green and Blue) image; motion consistency analysis is carried out on the prior dynamic object detection frame through an optical flow method, a first type of the prior dynamic object detection frame is determined, and the first type comprises a real dynamic object class and a static prior dynamic object class; determining a second type of a feature point according to the depth value of the feature point in the prior dynamic object detection frame of each real dynamic object class in the depth image, wherein the second type comprises a foreground point and a background point; calculating an initial pose result; and optimizing the initial pose result to obtain a final pose result. According to the method, the distribution characteristics of reprojection errors are analyzed in real time, and robust kernel function parameters are dynamically adjusted, so that the adaptability of an algorithm to a detection failure scene is enhanced, interference of non-Gaussian noise is effectively suppressed, and the positioning precision and robustness in a dynamic environment are improved.

An exemplary device, according to the present disclosure, provides a housing, an AR lens, a projector, a memory, and a control system. The control system and memory determine when the user is confused. The control system then provides for projecting a reorientation graphic via the projector directed at the AR lens. In some implementations, the reorientation graphic provides real time information and reminders to a user as they proceed through life. The exemplary device enables a user to maintain greater independence and a more normal lifestyle with the assistance of the reorientation graphic.

The invention relates to the technical field of image processing, and discloses a shadow rendering method and device, equipment and a storage medium. The shadow rendering method comprises the following steps: projecting the contour of a foreground image matting to a virtual ground in a preset virtual three-dimensional scene to generate a shadow projection; comparing visual depths of overlapped pixels in the shadow projection and the foreground matting to adjust a visible range of the shadow projection; and carrying out color mixing on the shadow projection in the visible range and the overlapped pixels of the virtual ground so as to render the shadow projection in the visible range to a preset virtual three-dimensional scene. By means of the method, the shadow effect of foreground image matting can be rendered in the virtual three-dimensional scene, and the sense of reality of shadow rendering and the real-time rendering efficiency are improved.

A visual effects system (12) includes a mirror structure (18) including a mirrored surface (32) and a non-mirrored surface (34). The mirrored surface (32) extends about the non-mirrored surface (34) and the mirrored surface (32) and the non-mirrored surface (34) face a guest area (14). The visual effects system (12) also includes one or more props (20) positioned proximate to the mirrored surface (32) and extending between the mirror structure (18) and the guest area (14), wherein the one or more props (20) are oriented such that the one or more props (20) is viewable from the guest area (14) and a reflection of the one or more props (20) provided by the mirrored surface (32) is viewable from the guest area (14), and a projector (24) oriented to project one or more images onto the non-mirrored surface (34).