The color of smiling: computational synaesthesia of facial expressions · HackerPapers discussionshttps://hackerpaper.kaipfister.de/p/1505.04260/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMTThe color of smiling: computational synaesthesia of facial expressions — mentioned by vcuculohttps://news.ycombinator.com/item?id=10134546urn:hackerpapers:mention:1505.04260:10134546Fri, 28 Aug 2015 09:59:15 GMT<p>An IKEA lamp becomes a Natural Interaction system which senses human emotional states through facial expression. It uses OpenCV for image processing and analysis to identify emotional state through the movements of face&#x27;s fiducial points. The lamp, made with Arduino, change its color to represent the user&#x27;s current emotion. Published paper: http://link.springer.com/chapter/10.1007/978-3-319-23231-7_1... http://arxiv.org/abs/1505.04260</p><p><a href="https://hackerpaper.kaipfister.de/p/1505.04260/">Paper and discussion history</a>. A mention is not an endorsement.</p>cs.CV