The Liber imaginum signorum is a treatise on astrological medicine that appears under the title De imaginibus ad calculum in the Latin translation of Picatrix and in Opus de praeclarum imaginibus astrologicis of Jerome Torrella.
In the Antipalus maleficiorum by Trithemius - an index of necromantic books - there is a quoting of this liber, attributed to the prophet Enoch.
This booklet, attributed to Hermes Abhaidimon, «almost unique among the philosophers blessed by God», relates the characters of fifteen fixed stars, each one exerting influence on an associated gem, plant and magic image.
The book includes some notions of astronomy and describes only the first phase of training in geomancy, with the definition of the figures but without providing further guidance to the learner on how to practice the art of divination.