Automatic detection method for scratches on surface of vehicle instrument panel
An automobile dashboard and automatic detection technology, which is applied in the fields of instruments, image data processing, character and pattern recognition, etc., to avoid false detection and missed detection, reduce production costs, and improve work efficiency.
Active Publication Date: 2020-05-01
NANJING INST OF TECH
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[0004] The purpose of the present invention is to provide an automatic detection method for the scratches on the surface of the automobile instrument panel, which can effectively overcome the defects of traditional manual detection by using a computer to automatically detect the scratches on the automobile instrument panel, which not only ensures the printing quality of the instrument panel, but also Improve work efficiency and reduce production costs
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[0043] Below in conjunction with accompanying drawing, technical scheme of the present invention is described:
[0044] Such as figure 1 As shown, an automatic detection method for scratches on the surface of an automobile instrument panel, comprising the following steps:
[0045] 1) Input the dashboard image, and preprocess the dashboard image to remove noise interference;
[0046] 2) Obtain the complex printed icon / symbol template at the center of the dashboard image;
[0047] 3) Use the template matching method to match the printed icon / symbol template, and remove the matched center complex printed icon / symbol from the dashboard image;
[0048] The specific implementation of the template matching method is as follows:
[0049] Slide on the original image as shown in Figure 2 such as image 3 The template image of , moves one pixel each time in the order from left to right and from top to bottom. At each position, use the following formula to calculate the matching metr...
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The invention discloses an automatic detection method for scratches on the surface of an vehicle instrument panel, and relates to the technical field of image automatic detection methods. The method comprises the following steps: 1) inputting an instrument panel image, preprocessing the instrument panel image, and removing noise interference; 2) obtaining a complex printing icon / symbol template atthe center of the instrument panel image; 3) matching a printing icon / symbol template; 4) acquiring an area in the circle of the instrument panel by adopting a contour detection method; 5) obtaininga connected domain of the area in the circle of the instrument panel by adopting a contour detection method; 6) judging whether scratches exist in connected domains of the printed icons or not; and (7) marking the detected complex printed icon / symbol scratches at the center, background scratches and simple printed icon / symbol scratches at the edge in the image. The scratches of the vehicle instrument panel are automatically detected through the computer, the defects of traditional manual detection can be effectively overcome, the printing quality of the instrument panel is guaranteed, the working efficiency is improved, and the production cost is reduced.
Description
technical field [0001] The invention relates to the technical field of an automatic detection method for scratches on the surface of an automobile instrument panel. Background technique [0002] In recent years, the automobile industry has developed rapidly. In 2018 alone, my country's automobile sales exceeded 28 million, ranking first in the world for 10 consecutive years. As an indispensable guarantee for safe driving, the instrument panel is a very important auto part. The correctness and clarity of the printing of various warning symbols and icons on the panel is an important prerequisite for the quality and safety of automotive products. [0003] Scratches on car dashboards can be in the target area or in the background area, where the scratches can be on complex printed icons / symbols in the center, or simple printed icons / symbols at the edges. At present, my country's automobile industry generally uses manual methods to detect the printing quality of instrument panel...
Claims
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Login to View More IPC IPC(8): G06T7/00G06T7/11G06T7/187G06K9/32G06K9/34G06K9/62
CPCG06T7/001G06T7/11G06T7/187G06T2207/10004G06T2207/30108G06V20/62G06V30/153G06V10/267G06V10/751G06V2201/02G06V30/10
Inventor 童莹赵曼雪曹雪虹
Owner NANJING INST OF TECH