Intersection point feature extraction based digital identification method

Abstract

The invention provides an intersection point feature extraction based digital identification method. The method comprises the following steps: (1) image preprocessing; (2) character zone positioning; (3) character segmentation; (4) intersection point feature extraction; and (5) character identification. According to the method, a noise zone is prevented from being misjudged to be a digit, so that the digital identification accuracy is improved; and under the condition of ensuring the identification precision and the anti-jamming property, the calculation amount is greatly reduced, the method has a relatively high application value for identifying a digital instrument in a power grid, and an instrument digital real-time identification system with a relatively good effect is realized. The method has the advantage that normalization and refinement processing does not need to be carried out in the processing method.

Description

technical field

[0001] The invention relates to a digital recognition method, in particular to a digital recognition method based on intersection feature extraction. Background technique

[0002] The seven-segment digital display instrument has many advantages such as easy reading, no need to estimate, high accuracy, adjustable mode and parameters, etc., and is widely used in various industries such as machinery, chemical industry, medicine, electronics, and finance. Due to the influence of the harsh environment in the power industry, manual operation is extremely dangerous, which is not conducive to artificially recording instrument data. The use of digital image processing technology and recognition technology can realize the automatic recognition of digital display instruments, which can not only improve work efficiency and ensure the accuracy rate, but also eliminate the danger of manual on-site operation. Very important practical value.

[0003] For digital character ...

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