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Lena Forsén[1] (Swedish: [leːˈna fʊˈʂeːn]), previously Soderberg[2] (born Sjööblom;[2] born 31 March 1951), is a Swedish model who appeared as a Playmate in the November 1972 issue of Playboy magazine,[3] as Lenna Sjööblom. Her centerfold was photographed by Dwight Hooker. The image would later become a ubiquitous standard test image in the field of digital image processing, where the image is known as Lenna.

https://en.wikipedia.org/wiki/Lena_Forsén