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- W4210353742 abstract "Head pose estimation is an important step for many human-computer interaction applications such as face detection, facial recognition, and facial expression classification. Accurate head pose estimation benefits these applications that require face images as the input. Most head pose estimation methods suffer from perspective distortion because the users do not always align their face perfectly with the camera. This paper presents a new approach that uses image rectification to reduce the negative effect of perspective distortion and a lightweight convolutional neural network to obtain highly accurate head pose estimations. The proposed method calculates the angle between the optical axis of the camera and the projection vector of the center of the face. The face image is rectified using this estimated angle through perspective transformation. A lightweight network that is only 0.88 MB in size is designed to take the rectified face image as the input to perform head pose estimation. The output of the network, the head pose estimation of the rectified face image, is transformed back to the camera coordinate system as the final head pose estimation. Experiments on public benchmark datasets show that the proposed image rectification method and the newly designed lightweight network improve the accuracy of head pose estimation remarkably. Compared with state-of-the-art methods, our approach achieves both higher accuracy and faster processing speed." @default.
- W4210353742 created "2022-02-08" @default.
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- W4210353742 date "2023-01-01" @default.
- W4210353742 modified "2023-10-15" @default.
- W4210353742 title "Accurate Head Pose Estimation Using Image Rectification and a Lightweight Convolutional Neural Network" @default.
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- W4210353742 doi "https://doi.org/10.1109/tmm.2022.3144893" @default.
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