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Dial plate pointer recognition method based on prior information

A recognition method and prior information technology, applied in character and pattern recognition, image data processing, instruments, etc., can solve problems such as blurred images, and achieve accurate results, accurate processing results, and accurate recognition results

Active Publication Date: 2016-08-17
BEIJING INST OF ENVIRONMENTAL FEATURES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, because the large-scale instrument will drive the dial to shake left and right during operation, the collected image is blurred

Method used

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  • Dial plate pointer recognition method based on prior information
  • Dial plate pointer recognition method based on prior information
  • Dial plate pointer recognition method based on prior information

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Embodiment Construction

[0052] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is for the purpose of illustration only, and in no way limits the invention and its application or usage.

[0053] In the industrial production process, instruments and meters such as voltmeter, ammeter, oil level gauge, thermometer, etc. are widely used. Through instruments and meters, the operation status of industrial production can be effectively monitored, which requires high accuracy, strong stability and good practicability of instrument readings. Since the human eye is far from being able to meet such demands, instrument dial recognition based on image processing came into being. Instruments and meters can be divided into digital meters and pointer meters. The present invention refers to the automatic identification of pointer meters, especially for the dials of instruments that are actually l...

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Abstract

The invention discloses a dial plate pointer recognition method based on prior information, and the method can determine the position of a thick end of a dial plate pointer through circular scanning. The method indirectly obtains the position of a fine end of the pointer according to the position of the thick end of the pointer, can prevent the excessive thinness of the fine end of the pointer from causing the inaccurate recognition of an image, and enables a processing result to be more precise. In order to enable the result to be more precise, the method also can verify whether the center of the fine end of the pointer is accurate or not through the prediction of the center of the fine end of the pointer, and can further recognize whether the recognition result is more precise or not. The method provided by the invention is high in stability, is good in robustness, and is good in practicality.

Description

technical field [0001] The invention relates to the fields of image processing and photoelectric technology, in particular to a dial pointer recognition method based on prior information. Background technique [0002] The technical background related to the present invention will be described below, but these descriptions do not necessarily constitute the prior art of the present invention. [0003] The traditional dial pointer recognition algorithm has the disadvantages of weak robustness and poor practicability. It often cannot process the dial image with labels, and the processing effect on blurred images is poor. However, in large state-owned factories, there is often a factory or annual inspection certificate label on the instrument dial. At the same time, because the large-scale instrument will drive the dial to shake left and right during operation, the collected image is blurred. Therefore, this puts forward new requirements for the dial pointer recognition algorit...

Claims

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Application Information

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IPC IPC(8): G06K9/20G06T7/60
CPCG06T7/60G06T2207/10004G06V10/22
Inventor 翟佳王宁明柴智
Owner BEIJING INST OF ENVIRONMENTAL FEATURES