A Review: Identification of Annotations for Circuit Symbols in Electrical Circuit Images

Abstract: Though electrical circuit annotations are integral part of Electrical circuit symbol, special attention is yet to be given on their interpretation, identi?cation and storage. This paper presents a proposed method for segmentation and identi?cation of annotations associated with electrical symbols in a circuit diagram images. Our proposed method will ?rst separates the text region around an electrical/ electronic circuit diagram, then identi?es the annotation of electrical circuit part of the segmented text corresponding to that particular annotated electrical symbol. In symbol identification morphological operations can be used. At the end an ef?cient OCR will be used to get the numerical values of the symbols along with their units with comparing it with stored database in MATLAB environment.

Keywords: Symbol recognition, electrical symbols, morphological operation, text annotation, OCR.