A method for automatic detection of instrument scale line position
An automatic detection and meter scale technology, applied in the field of meter detection, can solve the problems of increasing difficulty, slow speed, and complex logic of the meter, and achieve the effect of high efficiency, convenience and accuracy.
Active Publication Date: 2020-03-17
安徽慧视金瞳科技有限公司
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] With the development of automotive electronics technology, the number of electronic components used in cars is increasing, and the information displayed by the car instrument is no longer limited to basic information such as vehicle speed, speed, water temperature and oil quantity. The functions of the car instrument are constantly increasing, logic It has also become more complicated, which has led to increasing difficulty for manufacturers to perform functional tests on instrumentation. Automobile instrumentation testing has always been based on human testing, which has disadvantages such as low efficiency and slow speed. Each Functions require two or more repeated tests. The entire testing process is boring, inefficient, and error-prone. Using machine vision technology to automatically identify car meter readings is an effective way to improve the efficiency and accuracy of car meter function testing.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] A method for automatic detection of instrument scale line contours, characterized in that it comprises the following steps:
[0034] 1), through the analysis of the maximum connected domain size of the binarized scale instrument image and the brightness histogram analysis, it is judged whether the scale instrument to be analyzed belongs to a bright scale instrument or a dark scale instrument, as follows:
[0035] 1.1) Image binarization: Before binarizing the instrument image, it is necessary to calculate the binarization threshold; the binarization threshold adopts empirical values and is manually set before the algorithm runs;
[0036] 1.2) Connected domain extraction: In the binarized image, extract each connected domain and obtain its corresponding contour;
[0037] 1.3) Analysis of the maximum connected domain size: the dark scale instrument has a disc with a large area; while the bright scale instrument does not have such a disc, but the isolated scale lines are a...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention belongs to the technical field of instrument detecting, and in particular to a method for automatically detecting the position of an instrument graduation line, which particularly, comprises the determining of a bright graduation instrument and a dark graduation instrument; performing graduation line detection to the bright graduation instrument or the dark graduation instrument respectively via corresponding methods; and then realizing the automatic detecting to the graduation line position through the calculation of the position of the graduation line in the graduation instrument corresponding to the center of circle of the graduation instrument. According to the invention, an automatic strategy is adopted to realize the automatic detection of the graduation line of an instrument, which achieves high efficiency, convenience and accuracy.
Description
technical field [0001] The invention belongs to the technical field of instrument detection, and in particular relates to an automatic detection method for the position of a scale line of an instrument. Background technique [0002] With the development of automotive electronics technology, the number of electronic components used in cars is increasing, and the information displayed by the car instrument is no longer limited to basic information such as vehicle speed, speed, water temperature and oil quantity. The functions of the car instrument are constantly increasing, logic It has also become more complicated, which has led to increasing difficulty for manufacturers to perform functional tests on instrumentation. Automobile instrumentation testing has always been based on human testing, which has disadvantages such as low efficiency and slow speed. Each Functions require two or more repeated tests. The entire testing process is boring, inefficient, and error-prone. Using...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/13G06T7/136G06T7/187G06T7/70G01B11/24G01B11/27
CPCG01B11/24G01B11/27G06T7/13G06T7/136G06T7/187G06T7/70G06T2207/10004
Inventor 邓宏平汪俊锋韩钰刘罡
Owner 安徽慧视金瞳科技有限公司