Indicating value identification method of dial instrument

A recognition method and pointer-type technology, which can be used in character and pattern recognition, instruments, computer parts, etc., and can solve problems such as low efficiency and low recognition accuracy.

Inactive Publication Date: 2013-07-17
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low recognition accuracy and low efficiency of the existing method mentioned in the background technology in the position of the instrument pointer and scale line, the present invention proposes a method for identifying the indication of a pointer instrument

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  • Indicating value identification method of dial instrument
  • Indicating value identification method of dial instrument
  • Indicating value identification method of dial instrument

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Embodiment Construction

[0058] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0059] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0060] "Acquire, store and display the dial image of the pointer instrument", the dial image of the pointer instrument is collected by the camera, read into the computer system through the USB interface, and use the automatic digital recognition program in the computer to read a frame of data in the form of an array to the computer memory, and sent to the corresponding display memory at the same time, and finally the specific indication value of the instrument is displayed on the screen.

[0061] Use the "difference method" to determine the coordinates of the center of rotation of the pointer. After determinin...

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Abstract

The invention discloses an indicating value identification method of a dial instrument. The indicating value identification method of the dial instrument belongs to the field of artificial intelligence. The technical scheme of the indicating value identification method of the dial instrument is that a computer automatically acquires a dial plate image of the dial instrument, divides out needed image feature regions, obtains the feature of a number to determine the numerical value of the number according to centre-of-gravity position, perpendicular line features and horizontal projection operations, and finally computes the actual evaluation of the dial instrument through an abscissa of the number and a former pointer and a scale mark. The image processing method for reading the indicating value of the dial instrument can accurately acquires the coordinate value of the pointer and coordinate value of an intersection of the pointer and scale marks, can avoid indicating value calculation deviation problems caused by camera lens distortion, uneven scales of dial plates, or the noncoincidence of a fixed point of the pointer and the centre of a circle which passes through the scale mark of the dial plate due to the fact that the angle method is utilized in the prior art, improves the efficiency and accuracy of reading the indicating value of the dial instrument, is applicable to a plurality of hardware platforms, and has high transportability and stability.

Description

technical field [0001] The invention belongs to the field of artificial intelligence, and in particular relates to a method for identifying indications of a pointer instrument. Background technique [0002] Pointer instruments are still widely used in industrial production and daily life. The reading and interpretation of pointer instruments are generally done manually, that is, the relative position of the pointer and the scale line and the absolute position of the scale line are recognized by human eyes, and the estimation is performed. Read the indication value of the instrument. This method is inefficient, labor-intensive and prone to errors. [0003] In order to solve such problems, a reading system for pointer instruments based on computer vision technology has been developed. However, the current method has the disadvantages of large amount of computation, high complexity, and real-time requirements on the hardware platform. Contents of the invention [0004] Aim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/46
Inventor 魏振华张乐宋士波周宏林洁董书元任李懋闫晓元乔建强郭立燕徐彦杰
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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