다중 스케일 커널화 상관 필터를 이용한 견실한 객체 추적
Robust Object Tracking based on Kernelized Correlation Filter with multiple scale scheme
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초록
커널 상관 필터 알고리듬은 객체 추적에 대해 정확도에서 의미 있는 성과를 거두었다. 그러나 고정된 크기의 템플릿을 사용하기 때문에 추적 대상의 스케일 변화에 대처할 수 없었다. 본 논문에서는 최근접 보간법과 표준 가우시안 정규화를 이용한 다중 스케일에서의 상관 필터링 응답 값을 이용하여 프레임별로 가장 적합한 스케일을 찾아 객체를 추적하는 방식을 제안한다. 다음 프레임의 스케일 값들은 이전 프레임의 최적 스케일 값을 이용해 갱신하고 다시 해당 프레임에서의 최적의 스케일 값을 찾는다. 정확도 비교를 위해 기존 커널 상관 필터 알고리듬에서 사용된 VOT2014 데이터를 사용하여 제안된 방법의 유효성을 검증한다.
Abstract
The kernelized correlation filter algorithm yielded meaningful results in accuracy for object tracking. However, because of the use of a fixed size template, we could not cope with the scale change of the tracking object. In this paper, we propose a method to track objects by finding the best scale for each frame using correlation filtering response values in multi-scale using nearest neighbor interpolation and Gaussian normalization. The scale values of the next frame are updated using the optimal scale value of the previous frame and the optimal scale value of the next frame is found again. For the accuracy comparison, the validity of the proposed method is verified by using the VOT2014 data used in the existing kernelized correlation filter algorithm.
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