5 results about "Visible object" patented technology

The application provides a 4D person-object interaction generation method based on a text description, which comprises the following steps: in stage one, 3D person-object interaction key frame recovery: a human body motion sequence is obtained through a human body motion model and uniformly down-sampled to extract a key frame; a human body grid is reconstructed through an SMPL-X model for each key frame to extract a vertex position and form a human body point cloud; an object position anchoring network takes the human body point cloud, an object template point cloud and a text prompt as input to predict an object position and generate a 3D person-object interaction key frame; in stage two, 4D person-object interaction sequence generation: a contact perception diffusion model is constructed to take a sparse 3D person-object interaction key frame as input, extract a conditional signal through a contact perception encoder; based on the conditional signal, the 3D person-object interaction key frame is subjected to time series interpolation through the contact perception diffusion model to generate a time series coherent dense 4D person-object interaction sequence. The application realizes natural and realistic 4D person-object interaction synthesis of an unseen object.

Two-dimensional (2D) tracking data from multiple camera views is processed to determine three-dimensional (3D) object parameters. Image features are extracted from object data associated with 2D tracking across the camera views. The extracted features for objects visible in multiple views are aggregated and spatial representation tokens are generated based on the object data and reference vectors. Instead of computing birds-eye-view (BEV) features, 3D spatial parameters can be determined directly from the aggregated features and spatial representation tokens. Attention operations analyze relationships between different feature sets while frame-to-frame consistency is maintained in the determined 3D parameters. Multi-view feature aggregation and spatial token generation operate directly on 2D tracking data from surround-view cameras, allowing feature processing without view-specific geometric transformations. Direct 2D-to-3D transformation supports object tracking across different camera configurations and viewing conditions.

This invention discloses a hologram calculation and occlusion processing method based on shared object point sampling. Multiple pixels are selected as sampling center points on the hologram plane to form a sampling grid. For each sampling center point, a cone-shaped beam composed of several rays is emitted to perform object point sampling, filtering out visible object points. For each pixel on the holographic plane, K sampling center points are selected based on its positional relationship with the sampling center points. The union of the visible object point sets is calculated to determine the object point set corresponding to the pixel. Each object point in this set is traversed, and its complex amplitude contribution to the target pixel is calculated. All contributions are accumulated to obtain the light field encoded data of the pixel. The hologram calculation method proposed in this invention can guarantee the coherence between pixels, restore the true occlusion relationship of the model, and reduce the number of samples.

The application belongs to the technical field of automatic driving, and provides a positioning and map construction synchronization method, device, medium and vehicle. The positioning and map construction synchronization method comprises the following steps: acquiring a depth image of a surrounding environment of a vehicle; performing instance segmentation on the depth image of the surrounding environment of the vehicle, and simultaneously tracking a pose background area of an image acquisition device to determine each visible object model; tracking each visible object model and a geometric structure to jointly optimize the geometric shape and the pose of each visible object, and integrating overlap rate data of the joint optimization result and the instance segmentation to determine an initialized new object; based on the tracked initialized new object, the geometric shape and the pose of the initialized new object are jointly optimized again, overlap rate data of the re-joint optimization result and the instance segmentation are integrated again, and finally the object with the most accurate geometric shape and pose is integrated, and is positioned and displayed in an instantiated map synchronously.

The objective is to provide a display control device, a display control method, and a display control program that can improve the safety of persons present around invisible objects. The display control device (410) includes an object information acquisition unit (13) that acquires object information, which is information relating to an invisible object (T), and a display control unit (40) that generates an object information image (I1) showing the object information and controls a display device (210) using augmented reality technology so that the object information image (I1) is displayed in a way that is visible to a person (U) present in the vicinity of the invisible object (T).