Journal of Appliance Science & Technology ›› 2020, Vol. 0 ›› Issue (6): 28-33.doi: 10.19784/j.cnki.issn1672-0172.2020.06.001

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Applying the high-resolution network technology to extract face area temperature from thermal images

XU Xiangguo1,2, YIN Zhixin1   

  1. 1. Institute of refrigeration and cryogenics of Zhejiang university, Key laboratory of refrigeration and cryogenic technology of Zhejiang province Hangzhou 310027;
    2. Center for Balance Architecture, Zhejiang University Hangzhou 310027
  • Online:2020-12-01 Published:2020-12-31

Abstract: In recent years, personal comfort model has attracted much attention. The temperature of facial skin surface is the key parameter in the model. This paper used high-resolution network (HRNet) to directly detect facial landmark on thermal images to extract facial temperature. Achieve the superior accuracy over the state-of-the-art algorithm. Furthermore, we add face attributes as weights to the loss function to further improve the accuracy of difficult cases (such as profile faces, occlusions, exaggerated expressions). Finally, compare its performance on infrared images and RGB images in different conditions, and prove that infrared images can replace visible light images for accurate landmark detection under some special conditions (such as low light, privacy protection).

Key words: Facial landmark detection, Thermal image, High-resolution network

CLC Number: