Method and device for automatically extracting longitudinal deceleration marked line in high-precision map making

Abstract

The embodiment of the invention provides a method and a device for automatically extracting a longitudinal deceleration marked line in high-precision map making, and the method comprises the steps: quickly filtering a three-dimensional laser point cloud region where the longitudinal deceleration marked line is located through the extraction of the longitudinal deceleration marked line target detection network of a color image; besides, projecting the three-dimensional laser point cloud into a two-dimensional projection image, performing fine extraction of the longitudinal deceleration marked line conducted through a semantic segmentation network, and obtaining the inner side lines of the longitudinal deceleration marked line; furthermore, filtering an inner side line which is short in length and is mistakenly identified through a straight line connection line in the three-dimensional laser so that the longitudinal deceleration marked line is accurately extracted, and the precision of the longitudinal deceleration marked line extracted from the three-dimensional point cloud meets the requirement of high-precision map making. With application of AI training, the longitudinal deceleration marking line can be suitable for various complex traffic road scenes.

Description

technical field [0001] Embodiments of the present invention relate to the field of computer technology, and in particular to a method and device for automatically extracting longitudinal deceleration markings in high-precision map making. Background technique [0002] The invention of the automobile has changed the way of human travel. It strongly promotes the flow of goods and people with its convenience and speed, and plays an important role in the development of economy and society. With the continuous development of production technology, new production methods have reduced the unit production time of automobiles, lowered the unit price of automobiles, and made automobiles a mass product. As of 2010, there are about 1 billion vehicles of various types in the world, and this number is still growing at a high speed. However, with the increase of car ownership, the problem of traffic safety has become more and more prominent. In China, there are more than 500,000 traffic ...

AI Technical Summary

Problems solved by technology

The design of high-precision maps includes the extraction of various elements. The distance measurement of lidar is relatively accurate. However, due to errors in the fusion of multiple sensors, there are also errors in the collected images and point clouds collected by lidar. The fusion error has not been solved in the existing technology question

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