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Vehicle and traffic sign detection method

A technology of traffic signs and detection methods, applied in the field of vehicles, can solve the problems of color distortion of traffic signs, detection failure, inability to segment the outline of traffic signs, etc., so as to reduce the probability of missed detection and improve the detection accuracy.

Inactive Publication Date: 2019-06-07
BYD CO LTD
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AI Technical Summary

Problems solved by technology

However, the above-mentioned technology relies on the color characteristics of traffic signs in the detection process. In actual road conditions, due to weather, light, brightness or color fading and other conditions, the color of traffic signs is distorted, and it is impossible to accurately segment traffic signs based on color features. contours, resulting in failure to detect

Method used

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  • Vehicle and traffic sign detection method
  • Vehicle and traffic sign detection method
  • Vehicle and traffic sign detection method

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Embodiment Construction

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0027] The following describes the traffic sign detection method and the vehicle according to the embodiments of the present invention with reference to the accompanying drawings.

[0028] figure 1 is a flowchart of a traffic sign detection method according to an embodiment of the present invention.

[0029] Such as figure 1 As shown, the traffic sign detection method of the embodiment of the present invention may include the following steps:

[0030] S1, acquire the image collected by the vehicle camera, and convert the image...

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Abstract

The invention discloses a vehicle and traffic sign detection method, and the method comprises the following steps: obtaining an image collected by a vehicle-mounted camera, and converting the image into a grayscale image; preprocessing the grey-scale image to obtain an interested area, and performing scaling processing on the interested area for multiple times; HOG feature calculation and classification are performed on the region of interest after each time of zooming processing, so that a plurality of target region rectangular arrays containing traffic signs can be obtained; and carrying outoverlapping degree screening on all the target area rectangular arrays according to the rectangular coordinates in each target area rectangular array to obtain a traffic sign detection result. According to the detection method provided by the invention, multi-stage zooming can be carried out on the input image, HOG feature calculation and classification are carried out on each stage of zoomed image to obtain a traffic sign detection result, so that the detection precision is improved, and the probability of missed detection is reduced.

Description

technical field [0001] The invention relates to the technical field of vehicle intelligent driving, in particular to a traffic sign detection method and a vehicle. Background technique [0002] Traffic sign detection and recognition is an important content in the field of vehicle intelligent driving, and its process can be divided into detection stage and recognition stage. [0003] A detection method is proposed in the related art, in which cascade classifiers are combined with a large number of positive and negative samples for training, so as to realize the detection and positioning of traffic signs. However, the above-mentioned technology needs to calculate various features such as Haar feature and HOG (Histogram of Oriented Gradient, histogram of oriented gradient) feature. Features are sensitive to edges, line segments, etc., and are not suitable for detecting traffic signs. [0004] In the related art, a traffic sign detection method based on color segmentation is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/46G06K9/62
Inventor 陈斌赵龙
Owner BYD CO LTD
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