Vision-based pointer instrument automatic reading system and method

An automatic reading, pointer technology, used in instruments, character and pattern recognition, calculations, etc., can solve problems such as reliability and accuracy to be improved

Inactive Publication Date: 2016-05-04
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Inspection robots in high-risk areas have not been popularized on a large scale at present, becau

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  • Vision-based pointer instrument automatic reading system and method
  • Vision-based pointer instrument automatic reading system and method
  • Vision-based pointer instrument automatic reading system and method

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Embodiment Construction

[0069] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0070] In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or elem...

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Abstract

The invention discloses a vision-based pointer instrument automatic reading system and method. The system comprises: a circle center acquiring module used for acquiring image data of a pointer instrument and searching for the center of a circle of the pointer instrument in the image data; a pointer acquiring module used for extracting pointers of the pointer instrument through a Houghline function of Hough transform; a dial acquiring module used for extraction of a dial of the pointer instrument, extraction of the dial is determined according to image color information, and an optimal threshold value of color is determined by use of values of RGB, thereby extracting the dial of the pointer instrument; and a scale reading module used for calculating and reading an indicated number through the acquired pointers of the pointer instrument and the dial of the pointer instrument. Readings are directly obtained according to processing of an algorithm and are transmitted to a command center, and the command center can observe whether the instrument works normally according to the data, which is convenient and rapid.

Description

technical field [0001] The invention relates to the field of automatic instrument inspection image processing, in particular to a vision-based automatic reading system and method for pointer instruments. Background technique [0002] At present, most high-risk areas in China use manual inspections of equipment, but restricted by many factors such as the inspectors' familiarity with the equipment, professional level, work experience, attitude, sense of responsibility, and mental state, the inspection work is a very important task. Difficult work, especially for high-risk areas in remote areas, requires a lot of manpower and time; secondly, because high-risk areas are mostly high-voltage and SF6 equipment, manual inspections are very dangerous; at the same time, for unattended or few people In the high-risk areas on duty, it is also very difficult to conduct emergency command and dispatch when the high-risk areas fail. Therefore, it is very necessary to study the inspection r...

Claims

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Application Information

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IPC IPC(8): G06K9/32
CPCG06V10/25G06V20/62
Inventor 房斌张琳赵兴张洪锁赵鹏
Owner CHONGQING UNIV
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