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Instrument panel center determination method and system based on pointer capture
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A technology for determining methods and dashboards, applied in instruments, calculations, character and pattern recognition, etc., can solve problems such as errors that are prone to occur, and achieve the effect of reducing errors
Active Publication Date: 2020-03-27
AEROSPACE HI TECH HLDG GROUP
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[0003] The present invention aims to solve the problem that the existing method of using the pointer to determine the center of the instrument is prone to errors, and now provides a method and system for determining the center of the instrument panel based on pointer capture
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specific Embodiment approach 1
[0027] Specific implementation mode one: refer to figure 1 Specifically explaining this embodiment, a method for determining the center of an instrument panel based on pointer capture described in this embodiment includes the following steps:
[0028] Step 1: Start the instrument, at this time the instrument pointer starts to scan for self-test, after a delay of 3s, ensure that the pointer points to the 0 scale line stably, at this time, take a photo of the instrument panel when the pointer indicates the 0 scale of the instrument,
[0029] Judgment step 1: Judging whether there is green in the dashboard photo obtained in step 1, and the brightness is 600cd / m 2 ~800cd / m 2 area, if yes, go to step 2, otherwise return to step 1,
[0030] Step 2: Select the green color in the photo of the dashboard with a brightness of 600cd / m 2 ~800cd / m 2 The center point of the area is used as the first feature point,
[0031] Step 3: Intercept the pointer part in the dashboard photo, so th...
specific Embodiment approach 2
[0042] Specific implementation mode two: a system for determining the center of an instrument panel based on pointer capture described in this implementation mode includes the following modules:
[0043] Picture shooting module: start the instrument, after a delay of 3s, take the first picture of the instrument panel when the pointer indicates the 0 scale of the instrument,
[0044] Drive the pointer to swing to any non-zero scale, and the scale does not include the red area, after a delay of 1s, take the second dashboard photo;
[0045] Feature point selection module: select the green color in the first instrument panel photo with a brightness of 600cd / m 2 ~800cd / m 2 The center point of the area is used as the first feature point,
[0046] Select the green color in the second instrument panel photo, and the brightness is 600cd / m 2 ~800cd / m 2 The center point of the area is used as the second feature point;
[0047] Image interception module: intercept the pointer part in...
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Abstract
The invention discloses an instrument panel center determination method and system based on pointer capture, and relates to the field of automobile instrument detection. The method aims to solve the problem that errors are prone to occurring in an existing method for determining the center of an instrument through pointers. According to the instrument panel center determination method and system based on pointer capture, the pointers are accurately extracted from the images of the pointers at different positions in the actual instrument panel, the pointer positions of the instrument panel areaccurately positioned, then the actual center point coordinates of the instrument panel are calculated, and errors caused by a traditional theoretical value calculation method are reduced.
Description
technical field [0001] The invention belongs to the field of automobile instrument detection, in particular to the positioning detection of the central point of the instrument panel. Background technique [0002] When the existing vision system captures the pointer, it only uses the static pointer to operate, and obtains the center coordinates of the dial according to the theoretical value. As users become more and more interested in special-shaped pointers or dials, it is difficult to ensure the accuracy of the center of the dial in the existing pointer capture method. The irregular pointer will lead to deviation of the pointer indication, which will affect the key characteristics of the instrument. At the same time, due to dial stretching and other reasons, there are deviations between each set of dials. If the existing fixed theoretical values are used for detection, it will also lead to the problem of detection errors. Contents of the invention [0003] The present...
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