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A map drawing method, device and vehicle in areas with no or weak signal

A map drawing and weak signal technology, applied to geographic information databases, structured data retrieval, road network navigators, etc., can solve the problem of limited storage space, limited processor computing power, and inability to achieve high-precision map surveying and mapping in mass-produced vehicles Problems such as device drawing effect, to achieve the effect of optimizing and leaning memory usage and avoiding drawing errors

Active Publication Date: 2021-07-23
NINGBO GEELY AUTOMOBILE RES & DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the storage space of mass-produced vehicles is limited, and the computing power of the processor is limited, so it is impossible to achieve the rendering effect of a professional high-precision map surveying and mapping device

Method used

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  • A map drawing method, device and vehicle in areas with no or weak signal
  • A map drawing method, device and vehicle in areas with no or weak signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]An embodiment of the present invention provides a method for drawing maps in areas with no or weak signals, the method is used for vehicles in areas with no or weak signals, such as parking lots, inside some buildings or remote areas, etc., because The map of this area cannot be obtained due to reasons such as poor GPS signal, and the methods described include:

[0044] S1. Collect surrounding environment information.

[0045] S2. Identify the types of surrounding objects based on the surrounding environment information, and the types of surrounding objects include fixed objects, unknown objects and movable objects.

[0046] S3. Set surrounding object tags according to the types of surrounding objects.

[0047] S4. Obtain the size information of different types of surrounding objects, and store the size information of each type of surrounding objects under the corresponding preset surrounding object tags.

[0048] S5. Draw a map of the surrounding environment according...

Embodiment 2

[0063] An embodiment of the present invention proposes a program that can implement a method for drawing maps in areas with no or weak signals. The program is stored in a storage medium such as a vehicle-mounted computer, and the program can classify and store the collected image information, verify the sorted information and draw a map.

Embodiment 3

[0065] An embodiment of the present invention provides a map drawing device in an area with no or weak signal, such as figure 2 As shown, the device includes an acquisition module, an image processing module, a storage module and an image rendering module.

[0066] The collection module is used to obtain surrounding environment information, and the collection module may be a camera or a sensor capable of obtaining image information such as a millimeter-wave radar or a laser radar.

[0067] The image processing module is used to identify the types of surrounding objects from the surrounding environment information collected by the acquisition module, and the types of surrounding objects include fixed objects, movable objects and unknown objects, and measure the size information of each type of surrounding objects.

[0068] The storage module is provided with tags of different types of surrounding objects, and stores the size information of different types of surrounding object...

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Abstract

The invention relates to the field of intelligent driving, and proposes a method for drawing maps in areas with no or weak signals. The method includes: collecting surrounding environment information. The surrounding environment information is used to identify the types of surrounding objects, and the types of surrounding objects include fixed objects, unknown objects and movable objects. According to the type of surrounding objects, set the surrounding object labels. The size information of different types of surrounding objects is obtained, and the size information of the corresponding surrounding objects is stored according to the tags of the surrounding objects. Draw a map of the surrounding environment according to the stored size information of different types of surrounding objects. When data is stored in the method, each representative obstacle collected is stored, and memory usage is optimized and lean, which facilitates rapid map drawing. In addition, in the method, the collected surrounding environment information will be stored together with time stamps according to time sequence, so that no drawing sequence error will occur during map drawing.

Description

technical field [0001] The invention relates to the field of intelligent driving, in particular to a map drawing method, device and vehicle in areas with no or weak signals. Background technique [0002] Car navigation is carried out by using car GPS (Global Positioning System) with electronic map, which can conveniently and accurately tell the driver the shortest or fastest route to the destination. After the user marks two points arbitrarily on the car navigation system, the car navigation system will automatically design the best route for the car owner based on the current location, and plan the route through the car navigation system, making it more convenient for people to travel by car. There is no need to ask for directions frequently. However, the car navigation system needs to receive satellite signals. In areas with no signal or weak signal, such as relatively wide indoor areas, parking lots or remote places without signal coverage, the car navigation system cann...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/32G06F16/29
CPCG01C21/32
Inventor 郑在佑田鑫
Owner NINGBO GEELY AUTOMOBILE RES & DEV CO LTD