Facial Expressions Pain Level Estimated by Weighting Method

The process of understanding individuals through facial expressions via the analysis of emotions and sentiments is a crucial aspect in understanding the emotional states of individuals. This facilitates effective responsiveness during conversational exchanges. However, in situations where it is challenging to articulate feelings the significance of understanding pain levels becomes crucial. This understanding directly influences decision-making regarding the selection of differing approaches to problem-solving in coping. Therefore, the researchers have proposed a method utilizing facial expression analysis to detect pain levels, aiming to address the issue of ambiguous pain expression. In our approach, Pain Level Expression (PLE), utilizing key points in six facial areas affecting emotional expression, was estimated by incorporating weights derived from emotional classification. We applied our method to a sample group of 25 individuals, comprising a total of 4,084 images. The results underscore the effectiveness of our approach in providing a more accurate reflection of pain.