Kalman Filtresi ve Küresel En Yakın Komşu Yöntemi ile Çok Kişili Gerçek Zamanlı Poz Takibi

Year 2023, Volume: 26 Issue: 2, 889 - 899, 05.07.2023

Ahmet Samet Halıcı Ayşe Demirhan

https://doi.org/10.2339/politeknik.1049933

Cited By: 1

Abstract

Poz tahmini, kamera ile çekilen görüntülerde insan iskeletindeki anahtar noktaların piksel konumlarının tespit edilmesi amacıyla ortaya çıkmıştır. Poz tahmini yöntemlerinin çıktıları görüntüde tespit edilen tüm eklem noktalarının piksel değerlerini ilişkilendirdiği kişiye göre vermektedir. Videolarda kişilerin hareketlerini anlamlandırmak için ardışık görüntü kareleri boyunca kimliklendirilmeleri gerekir. Böylece kişilerin video boyunca ne zaman hangi hareketleri yaptığı tespit edilebilir. Bu çalışmada sabit hızlı ve sabit ivmeli hareket modeline göre Kalman filtresi kullanarak küresel en yakın komşu (KEYK) algoritması ile tasarlanan çok kişili poz takibi yönteminin verdiği sonuçlar incelenmiştir. Geliştirilen ön işleme adımlarının poz tahmini yöntemlerinin kalitesini artırarak poz takibine etkisi de tespit edilmiştir. Bu amaçla PoseTrack veri kümesi üzerinde DCPose ve OpenPose poz tahmini yöntemlerinin başarımı değerlendirilmiştir. Ön işleme adımları ile sistemin başarımının her iki yöntem için de yükseldiği görülmüştür. Gerçek zamanlı çalışabilen, başarılı bir poz tahmini yöntemi olan ve düşük kaynak tüketimine sahip OpenPose yöntemi ile literatürde en iyi sonuçları veren DCPose yönteminin sonuçları incelendiğinde çok kişili poz takibi konusunda DCPose yönteminin daha başarılı sonuçlar verdiği görülmüştür. 550 farklı video ile elde edilen sonuçlar ön işleme adımları uygulandığında başarımı sabit hızlı ve sabit ivmeli hareket modellerinde aşağıdan yukarı yöntemi OpenPose için %22.6 ve %16.02, yukarıdan aşağı yöntemi DCPose için %21.2 ve %21.8 artırmıştır.  

Keywords

Gerçek zamanlı poz takibi, poz tahmini, Kalman filtresi, küresel en yakın komşu yöntemi, hareket tanıma için poz takibi

Multi-Person Real-Time Pose Tracking Using Kalman Filter and Global Nearest Neighbor

Abstract

Pose estimation has emerged in order to detect pixel positions of keypoints on the human skeleton in images taken with the camera. The outputs of the pose estimation methods give the pixel values of all the articulation points detected in the image according to the person they associate with. In order to make sense of people's movements in videos, people need to be identified across successive frames. Thus, it can be determined when people make which movements during the video. In this study, the results of a multi-person exposure tracking method that is designed with the global nearest neighbor (GNN) algorithm using the Kalman filter based on constant velocity and constant acceleration motion models were examined. The effect of the developed preprocessing steps that increase the quality of the pose estimation methods on the pose tracking has also been determined. For this purpose, the performance of DCPose and OpenPose pose estimation methods on the PoseTrack dataset was evaluated. It was observed that the performance of the system increased for both methods with the preprocessing steps. When the results of OpenPose method, which can work in real time, a successful pose estimation method and have low resource consumption, and DCPose method, which gives the best results in the literature, are examined, it is seen that DCPose method gives better results in multi-person pose tracking. The results obtained with 550 different video increased the performance in constant velocity and constant acceleration motion models by 22.6% and 16.02% for bottom-up method OpenPose and 21.2% and 21.8% for top-down method DCPose when preprocessing steps were applied.

Keywords

Real-time pose tracking, pose estimation, Kalman filter, global nearest neighbor method, pose tracking for action recognition

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