Vehicle Re-Identification in Context
This addresses the need for better evaluation in vehicle re-identification for real-world applications, but it is incremental as it focuses on dataset creation rather than a new method.
The authors tackled the problem of unrealistic assumptions in existing vehicle re-identification benchmarks by introducing a new benchmark called VRIC, which includes 60,430 images of 5,622 vehicle identities with more realistic variations in resolution, blur, and other factors.
Existing vehicle re-identification (re-id) evaluation benchmarks consider strongly artificial test scenarios by assuming the availability of high quality images and fine-grained appearance at an almost constant image scale, reminiscent to images required for Automatic Number Plate Recognition, e.g. VeRi-776. Such assumptions are often invalid in realistic vehicle re-id scenarios where arbitrarily changing image resolutions (scales) are the norm. This makes the existing vehicle re-id benchmarks limited for testing the true performance of a re-id method. In this work, we introduce a more realistic and challenging vehicle re-id benchmark, called Vehicle Re-Identification in Context (VRIC). In contrast to existing datasets, VRIC is uniquely characterised by vehicle images subject to more realistic and unconstrained variations in resolution (scale), motion blur, illumination, occlusion, and viewpoint. It contains 60,430 images of 5,622 vehicle identities captured by 60 different cameras at heterogeneous road traffic scenes in both day-time and night-time.