47 results about "Visibility determination" patented technology

When a vehicle attempts to enter a priority road from a non-priority road, a visibility determination processing section compares moving object information on the priority road obtained from a first infrastructure facility installed near a stop position with moving object information on the priority road detected by an autonomous sensor mounted on the vehicle, and determines that the visibility is poor if the former does not match the latter or determines that the visibility is good if the former matches the latter. Then, when the former does not match the latter, the driver is informed of intersection support information. When the former matches the latter, the driver is not informed since it is determined that the driver has already recognized the information by visual observation.

An on-vehicle information provision apparatus is provided that visually provides a vehicle occupant with positional information on an object. The apparatus includes object setting device that sets the object, visibility determination device that determining whether or not the occupant can see the object and positional information display device that, when it is determined that the occupants can see the object, visually informs the occupant of an apparent position of the object within an actual landscape that is being seen by the occupant by displaying image information showing the object superimposed on the landscape.

The present invention provides a browser based mass three-dimensional point cloud data release method. The method comprises the following steps that S1. a bounding box of original three-dimensional point cloud data is calculated, and block division is carried out on the original three-dimensional point cloud data according to the bounding box and a regular grid division theory, so as to divide a plurality of block point cloud bounding boxes; S2. an octree is established for each block point cloud bounding box, and a description file is configured for each octree; S3. regular grid division is carried out on a point cloud octree, and a quadtree structure is established for the octree contained in each regular grid; and S4. a browser sends in real time a query request to a server, the server returns in real time an octree query result to the browser, the browser carries out visibility determination on the octree query result, and the visible octree is loaded, so as to complete dynamic loading and scheduling of mass three-dimensional point cloud data. According to the method disclosed by the present invention, web based release and visualization of mass large point cloud files are realized, and the problem that point cloud data is difficult to release is solved.

A system and method for determining graphical object visibility by utilizing ancillary geometry. When comparing visibility cones with bounding hulls of scene graph hierarchy leaf nodes, ancillary geometry may be used in place of the bounding hulls and the leaf node's actual geometry. The ancillary geometry may be created through a manual process, or by an automated decimation process. The ancillary geometry may be a simplistic analytic surface (e.g., a sphere or a cylinder), a NURB surface, a collection of polygons, or a combination of surfaces and polygons.

An endoscope system includes an image pickup section, provided in an endoscope, which performs image pickup, a determining section that determines whether a specific observation object exists inside an image pickup region of the image pickup section, a recognizing section that determines whether the specific observation object can be recognized as an image from the picked-up image in the image pickup region picked up by the image pickup section, a low visibility determination output section that determines, when the determining section determines that the specific observation object exists inside the image pickup region and the recognizing section cannot recognize the specific observation object as an image, that the image pickup section is in a low visibility condition and outputs a low visibility determination result, and an obstacle estimation section that estimates an obstacle or a type of obstacle which causes the low visibility according to the low visibility determination result.

The invention relates to a 3D model rendering display method. The 3D model rendering display method comprises steps of determining whether a root node of each sub-block in an established 3D model is visible according to position information of a current viewpoint; partitioning the 3D model according to a three-dimensional coordinate direction into a plurality of sub-blocks, wherein each sub-block generates a corresponding adaptive tree LOD according to a hierarchy and data quantity information of each; according to the self-adaptive tree LOD, performing recursive traversal on a sub-tree from a visible root node and performing LOD visibility determination on all nodes under the root node; performing visibility determination and LOD accuracy test on all nodes under the root node layer by layer according to the hierarchy to obtain a corresponding hierarchy of a node which satisfies visibility and an LOD accuracy requirement; loading model data corresponding to the hierarchy satisfying the requirements; and rendering and displaying the 3D model. The invention also discloses a 3D model rendering display system, which solves defects of the LOD strategy in the prior art.

The invention relates to an image defogging method, an image defogging device, a computer storage medium and a mobile terminal. The image defogging method comprises steps: a photographing preview mode is entered, and a preview image is displayed; the current visibility of the area of the preview image is acquired; according to the visibility, a haze concentration grade is determined; and according to the haze concentration grade, a corresponding defogging method is adopted to carry out defogging processing on the preview image. According to the above image defogging method, the haze concentration grade can be determined according to the acquired visibility, a corresponding defogging method is adopted for a preview image with a different haze concentration grade for adaptive defogging processing, the defogging effects are enhanced, and the user experience is provided.

The invention relates to a ship control device based on gas analysis. The ship control device comprises a scattered type visibility viewer, ship speed measuring equipment, ship driving equipment and main control equipment, wherein the main control equipment is connected with the scattered type visibility viewer, the ship speed measuring equipment and the ship driving equipment respectively; a maximum allowable driving speed of ships is determined according to the visibility output by the scattered type visibility viewer; based on the maximum allowable driving speed of the ships and a current ship driving speed output by the ship speed measuring equipment, the ship driving speed is controlled by the ship driving equipment. The ship control device based on the gas analysis can be used for automatically limiting the driving speed of the ships by checking the visibility of the air around the ships, and prompting a driver to open or close windows by comparing PM2.5 (Particulate Matter 2.5) concentrations of inside and outside control rooms of the ships, so that the safety driving of the ships and the personal safety of people on the ships are guaranteed.

The invention discloses a streetlamp brightness adjusting system based on road visibility. The streetlamp brightness adjusting system comprises an information acquisition module which is used for acquiring weather information of a target road section, a visibility determining module which is used for determining the visibility of the target road section according to the weather information of thetarget road section, and a brightness adjusting module which is used for adjusting the brightness of a streetlamp on the target road section to be matched with the visibility of the target road section according to the visibility of the target road section. In this way, through the brighter streetlamp and the better illumination effect, a freshman and a driver can aware the peripheral pedestrian and vehicle situation more clearly, the road jamming situation can be effectively reduced, and road accidents can be effectively avoided.

A driving assistance device includes a visibility determination unit that determines whether visual recognition within a predetermined distance from a vehicle can be achieved in a traveling direction of the vehicle, an operation detection unit that detects an operation of causing the vehicle to enter a space in which an oncoming vehicle travels, based on information representing an operation of the vehicle by a driver, and a control warning unit that warns the driver or controls the vehicle in such a way that the vehicle does not enter the space when the visibility determination unit determines that visual recognition within the predetermined distance cannot be achieved, and the operation detection unit detects the operation of causing the vehicle to enter the space.

Provided are a travel assistance device and a computer program which enable travel assistance which is appropriate for connection roads to be performed. More specifically, the present invention is configured such that a captured image of the surrounding environment of a vehicle is acquired, a map information image, i.e. a map image which expresses a map in three dimensions, and shows the same range as the image-capture range of the captured image from the same direction as the image-capture direction of the captured image, is acquired, the driver visibility of a connection road, i.e. a road which connects with the road along which the vehicle is travelling at a junction point present in the surroundings of the vehicle, is determined on the basis of the captured image and the map information image, and a visibility determination result is outputted.

The invention provides a millimeter wave radar modeling-based method for object visibility determination, to solve the problem of object visibility determination based on virtual sensor modeling in intelligent vehicle simulation and testing, and improve the fidelity of sensor modeling while meeting simulation efficiency requirements. It includes the steps of target vehicle information detection to obtain target vehicle information; target vehicle reflection intensity simulation: for each target vehicle performing geometry culling on the target vehicle, discarding completely-invisible target vehicles, and calculating visible section information for each target vehicle that has a visible section, and reflection intensity calculation; target vehicle visibility determination: analyzing visibility of the target vehicle according to the target vehicle reflection intensity, and converting and outputting information of a visible object into an expression form of a real millimeter-wave radar sensing an object.

The invention discloses a visibility determination method and device for a rear silencer of a vehicle, and relates to the technical field of vehicles. The terminal can establish a view surface based on the extracted target contour line of the rear bumper of the vehicle and the observation reference point, and sends a reminding message after determining that the rear silencer in the three-dimensional model of the vehicle intersects with the view surface, so as to indicate that the rear silencer does not meet the visibility design requirement. The target contour line is extracted from the three-dimensional model of the vehicle, namely, the visibility of the rear silencer of the vehicle can be determined in the design stage of the vehicle, and the visibility of the rear silencer does not need to be determined after a sample vehicle is manufactured, so that the visibility determination efficiency of the rear silencer of the vehicle is effectively improved, and the visibility determination efficiency of the rear silencer of the vehicle is improved. And the visibility determination cost of the rear silencer can be reduced.

In the present invention, an image generation unit (21) generates a support image that indicates a reference position for an object. A visibility determination unit (22) determines whether or not a reference range with the reference position as a reference is visible from a moving body (100). If the reference range is determined to be visible, a display control unit (23) displays the support imageso as to be superimposed without any change on the surrounding view from the moving body (100), whereas if the reference range is determined to be not visible, the display control unit (23) changes the support image and displays the changed support image so as to be superimposed on the surrounding view from the moving body (100).