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A sort-of related idea is: How small can an image of a human face be and still be recognizable? I remember X-face images from mail headers years ago -- these w
by computator 4y ago
A sort-of related idea is: How small can an image of a human face be and still be recognizable? I remember X-face images from mail headers years ago -- these were just 48 x 48 x 1 pixel images, i.e., just 288 bytes (yes, bytes, not KB or MB). I marveled that the faces were indeed recognizable. I wish I could find an example of an X-face of a famous person (or even an unknown person) to give as an example here, but this seems to be one of those things that are ungoogleable.
- snerbles 4y agoAfter some digging ("x-face image usenet" on DDG yielded a link to a page on curlie.org), I found this collection: https://ace.home.xs4all.nl/X-Faces/ https://ace.home.xs4all.nl/X-Faces/
- gaudat 4y agoThere's a chart in the tiny face paper [.] that compares face size against accuracy. The paper concerns on detecting any faces instead of recognizing a single face though. Seems we can shrink down to 24x19 and still maintain 50% accuracy. [.] https://openaccess.thecvf.com/content_cvpr_2017/papers/Hu_Finding_Tiny_Faces_CVPR_2017_paper.pdf https://openaccess.thecvf.com/content_cvpr_2017/papers/Hu_Fi... Figure 9