Pointing direction identification method of analog metering device pointer and image acquisition equipment thereof
A recognition method and measuring instrument technology, applied in the field of recognition, can solve the problems of large manpower consumption and misjudgment
Inactive Publication Date: 2019-07-26
DELTA ELECTRONICS INC
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[0004] An object of the present disclosure is to provide a method for identifying the pointing of the pointer of an analog scale and its image acquisition device, wherein the identification method is to acquire the original digital image of the analog scale, and then use the original digital image to identify the position of the analog scale The pointing of the pointer, so as to solve the problem that in the prior art, the pointing of the pointer of the analog meter must be manually interpreted, resulting in a large amount of manpower and the lack of human misjudgment
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[0033] Some typical embodiments embodying the features and advantages of the present disclosure will be described in detail in the following description. It should be understood that the present disclosure can have various changes in different implementations, which do not depart from the scope of the present disclosure, and the descriptions and diagrams therein are essentially for illustrative purposes, rather than restrictive This disclosure.
[0034] See figure 1 , figure 2 , Figure 3A , Figure 3B and Figure 3C ,among them figure 1 This is a flowchart of the steps of the identification method of the first preferred embodiment of the present disclosure, figure 2 for figure 1 The schematic diagram of the structure of the image acquisition device to which the recognition method is applied, Figure 3A for figure 1 The schematic diagram of the original digital image of the analog meter obtained by the identification method shown, Figure 3B for Figure 3A The schematic diagram ...
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The invention provides an identification method which is suitable for identifying the pointing direction of an analog metering device pointer. The identification method comprises the steps of (a), acquiring an original digital image of the analog metering device; (b), generating an adjusted digital image according to at least one property of the original digital image; (c), determining an approximate contour of the pointer from the adjusted digital image; (d), determining a first reference point according to the approximate contour; and (e), selecting a second reference point on the approximate contour according to the first reference point, and deciding the pointing direction of the pointer by means of the first reference point and the second reference point.
Description
Technical field [0001] The present disclosure is an identification method, and particularly relates to an identification method of the pointer of an analog meter and an image acquisition device thereof. Background technique [0002] In the prior art, analog meters, such as barometers, water meters, voltmeters, oil pressure meters, and thermometers, etc., must be manually interpreted to determine the direction of the pointer in order to know the scale pointed by the pointer. , Resulting in the need to consume a lot of manpower, and there is often the possibility of misjudgment. [0003] Therefore, how to develop a recognition method and an image acquisition device that can improve the pointer orientation of an analog meter, which is lacking in the prior art, is a problem urgently needed to be solved by those in the related art. Summary of the invention [0004] An object of the present disclosure is to provide a method for identifying the pointer of an analog meter and an image acqu...
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IPC IPC(8): G06K9/00
CPCG06V20/20
Inventor 王承文陈宥凯张志维
Owner DELTA ELECTRONICS INC