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Micro and Nano Systems Letters
Fig. 1 | Micro and Nano Systems Letters

Fig. 1

From: Stereoscopic facial imaging for pain assessment using rotational offset microlens arrays based structured illumination

Fig. 1

Schematic illustrations of quantitative pain rating using a face reading camera module (FRCM). a Concept of 3D face imaging with the FRCM. A stereo camera is used to obtain depth information of a face. NIR dot projection enhances the performance of stereo matching. b An illustration of conventional pain metric and pain assessment using the FRCM. The FRCM measures pain intensity using changes of facial expression while conventional methods generally depend on self-reporting

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