Relevant Feedback in Content-Based Engineering Drawing Retrieval

In this paper, the mechanisms of explicit and implicit relevant feedback in content-based engineering drawing retrieval are presented. The relevant feedback we presented can be seen as the process of relevant evaluation, according to the results of sketch recognition and retrieval conducted by users, then the intentions and subjective perceptions of users can be captured by continuous feedback. In accordance with the relevant feedback on the fuzzy mark in the retrieval results, the movement methods of query point in drawings constructed by single primitive and multi-primitives are given.