Intelligent trademark recognition and similarity analysis using a two-stage transfer learning approach

Amy J.C. Trappey*, Charles V. Trappey, Eason Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The ubiquitous and fast-growing e-marketplaces are causing serious concerns of unauthorized trademark usages, especially their pictorial images. There is a significant need for e-commerce service intermediaries and trading sites to actively check whether product images posted online are not infringing upon others’ intellectual property rights (IPRs). To ensure registered trademark (TM) or copyrighted logo-image (logo) protection, this research develops an intelligent system that can detect, locate, and crop (cut) logos posted online and check whether they are substantially or deceptively similar to registered TM logos. This research integrates two deep learning models to achieve the research goal. The first is the logo detection and localization model for cropping trademark like images from complex online merchandise photos, which could have images of many product views and even worn and displayed on a human model. Only the cropped logo image is needed for comparison to a database of registered trademarks. The second model performs TM similarity analysis using the cropped logos compared to the published TM images. Yolo v4 is adopted as the general logo locator for intelligent logo image cropping. The triplet convolutional neural network model is used to fine-tuned for intelligent trademark similarity analysis. The models are trained with an image dataset, combining image samples from LogoDet-3k and images found through web search. The system performance is quantitatively tested using the FlickrLogos-32 dataset and consumer product images extracted from an e-commerce platform. The test results of the system achieve high precision (0.91) for trademark class matching.

Original languageEnglish
Article number101567
JournalAdvanced Engineering Informatics
StatePublished - Apr 2022


  • Trademark (TM) infringement
  • Transfer learning
  • Triplet neural network
  • Yolo v4


Dive into the research topics of 'Intelligent trademark recognition and similarity analysis using a two-stage transfer learning approach'. Together they form a unique fingerprint.

Cite this