The invention discloses an SVG
vector diagram-based primitive matching and intelligent
recognition system and method, and relates to the technical field of computer graphic
processing and mode recognition. The
system stores a PDF file through SHA-256 Hash duplicate removal, format conversion is achieved through a tool, an 800DPI PNG image is generated, and the resolution is verified; the affine
transformation matrix is analyzed, coordinate normalization and graphic element classification conversion are executed, and complex paths are split, deduplicated and merged; detecting a character area, and deleting corresponding character elements in the SVG; geometric features are extracted to construct a multi-dimensional index, and a template topological structure is analyzed; and selecting anchor points according to priorities, adapting to multiple rotation directions, matching non-
anchor point elements through dynamic tolerance, verifying connection points in combination with adaptive topology tolerance, and finally outputting a matching result containing confidence. The
system realizes efficient identification and accurate matching of technical drawings through
standardization processing and an intelligent matching
algorithm, and is suitable for scenes such as industrial drawing analysis and document
digitization.