Powerful image matching technology
LTU technologies’ image matching functionality uses distinct pixel features to analyze visual content and identify matching images between a query image and a reference database.
Use image matching to search and find images that are:
- Exactly the same (e.g. for deduplication)
- Edited in any way (e.g. for tracking on copyright images)
- Photos taken of the same visual content (e.g. for print to mobile applications)
Matching zone – what matched?
The LTU technologies’ image matching functionality includes an optional matching zone parameter. The matching zone highlights exactly where a query image matched with identified images from a reference database. The matching zone details can be represented visually, as coordinates and as a percentage.
The matching zone is typically used:
- To understand where and why two images matched
- As a threshold for disregarding images that matched with less than x%
Configurations for optimized performance
Image matching is highly configurable and applicable to a vast number of different applications that require the functionality of searching and identifying matching images. Image matching can be configured to be optimized with the following options:
- Rotation invariance
- Matching thresholds
- Text removal
- Flip invariance
As an example, the requirement for image matching for ad tracking is very different than that of mobile image matching:
Ad tracking: strong against transformation such as flipped, cropped and edited images.
Mobile: robust against glare, perspective and distance.