Figure 2
The screenshot shows a dark background with a centered rectangular photo of a person indoors. A rectangular box surrounds the person’s face and shows facial landmark points outlining features such as the eyebrows, nose, lips, jawline, and chin. A dark rectangular bar covers the eye area. Near the top-left of the face bounding box, the value is “0.66”. At the bottom-left of the photo, a label reads “happy (0.99)”. Four circular emoji-style icons appear at the corners of the full image: a smiling face in the top-left, an angry face in the top-right, a sad face in the bottom-left, and a surprised face in the bottom-right.Mood-matrix interface prototype