VERFAHREN ZUR ABLEITUNG CHARAKTERISTISCHER LINIEN VON DER FARBFOTOGRAFIE EINES OBJEKTES, VORZUGSWEISE EINES GESICHTES UND UNTER ANWENDUNG DES VERFAHRENS HERGESTELLTE IDENTITAETSKARTE

摘要

A method of deriving characteristic curves from a colored photograph of an object, which comprises making an image comprising only one of the basic colors of the colored photograph, the contrast of said image being enhanced, so that only the areas of the object which are most strongly colored in said color are reproduced.