Multi-bit half-character skipping judgment and recognition method for rolling number characters on dial plate

Abstract

The invention relates to a multi-bit half-character skip judgment and recognition method for rolling number characters on a dial plate, which comprises the following steps of: searching the position of a first half-word tag of five binary images, and if the position of the first half-word tag is 5, skipping the last digit; if the position of the first half-character tag is smaller than 5, skippingtwo or more than two bits of multiple bits, performing half-character recognition on the first half-character, wherein in the half-character recognition step, a center boundary of a half-character binary image is compared with a center boundary of a double-digital template to find out the specific position of the half-word binary image in the double digital templates; performing double-digital template cutting, and performing template matching on the half-word binary image and the cut double-digital template, counting the number of values being 1, repeatedly executing for i times to find outthe label of the double-digital template with the minimum distance, taking the label as an initial recognition result, and determining a final recognition result by combining the position of a centerboundary of the half-word binary image. The method provided by the invention needs few operation steps for processing the picture, and is high in recognition accuracy.

Description

technical field [0001] The invention relates to the technical field of image recognition of scrolling digital characters in image processing and recognition, in particular to a multi-digit and half-word jump judgment and recognition method for scrolling digital characters on a dial. Background technique [0002] Dial scrolling digital characters are used in many fields, such as household water meters, household electric meters, etc. There are also many ways to recognize dial scrolling digital characters. The easiest way is to take pictures of the dial to collect images, and then use pattern recognition algorithms to identify them after image processing. The corresponding number is displayed, that is, the camera-type meter reading system. In this system, digital character recognition is the key of the whole system. However, in the camera-type meter reading system, due to the incomplete carry of the reading turntable, incomplete characters of upper and lower double half chara...

AI Technical Summary

Problems solved by technology

However, in the camera-type meter reading system, due to the incomplete carry of the reading dial, there are often incomplete characters with upper and lower double half words.

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