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Night signal light detection and identification method based on color space and selective voting mechanism

A technology of color space and voting mechanism, applied in the field of traffic lights

Inactive Publication Date: 2013-04-03
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing technologies focus on the recognition of traffic signs during the day, and seldom cover traffic signs at night.

Method used

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  • Night signal light detection and identification method based on color space and selective voting mechanism
  • Night signal light detection and identification method based on color space and selective voting mechanism
  • Night signal light detection and identification method based on color space and selective voting mechanism

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Embodiment Construction

[0016] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0017] The night signal light detection and recognition method based on color space and selection voting mechanism disclosed by the present invention, the method flow is as follows figure 1 As shown, the details are as follows:

[0018] The first step: use the color space to locate the signal light.

[0019] To obtain an image to study, the first thing to do is to locate the signal light. Robust positioning methods can accurately find the research object and eliminate interference.

[0020] The positioning of the signal lights in this example is realized based on color information. We choose the HLC color space...

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Abstract

The invention discloses a night signal light detection and identification method based on color space and a selective voting mechanism. The method includes step one, positioning a signal light by using HLC color space; step two, correcting rotation offset of the signal light and a counter caused by shooting, and finding a principal direction; and step three, obtaining a projection histogram through framework extraction and projection in X and Y directions, and searching an indicator light represented by a template histogram with the highest similarity to identify through comparing the projection histogram with the template histogram; and step four, for a seven-segment display of the counter, comparing a target to be identified with a reference template in segments, and finally achieving the identification by using the voting mechanism.

Description

technical field [0001] The invention relates to the field of traffic lights, and more specifically, relates to a method for detecting and recognizing nighttime lights based on color space selection and voting mechanism. Background technique [0002] The development of computer-guided driving assistance systems, such as GPS positioning system, radar positioning, and ESP, has considerable significance for increasingly high-end cars. Among them, the role of signal light recognition in the auxiliary system cannot be underestimated, it is related to the safety of driving. Not only that, there are 7% to 8% of color-blind and color-deficient patients in the world, and the recognition of traffic lights makes it possible for this group of people to drive. Therefore, this topic has attracted many followers. The most basic traffic lights are our common traffic lights: including red, green, and yellow lights. In addition, another indicator device: the timer is also increasing on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
Inventor 林巍峣苏晓琼范波乞炳诚
Owner SHANGHAI JIAO TONG UNIV
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