Printer Source Identification Based on Graph Model

Printer source identification is an important means of document inspection and plays an important role in forensic identification. In the research of printer source recognition, traditional methods basically rely on specific characters to recognize printed documents, but the recognition of Chinese printed documents is usually difficult because there are few or no specific characters. In view of this situation, this paper proposes a text-independent printer source identification method, which uses a graphical model to model the timing relationship of the printer, and then extracts the timing characteristics of the printer, which belong to the text-independent printer. Internal features, so that the method can be recognized without relying on specific characters, and has achieved good experimental results. Experimental data show that the proposed method is very useful for the traceability of printed documents.