The 12th Workshop on Information Optics will be held during 15-19 July, 2013 at Hotel Beatriz Atlantis (Puerto de La Cruz, Spain). Puerto de la Cruz is a town on the island of Tenerife, the largest island of Canary Islands Archipielago. The workshop will address the latest advances in information optics, information photonics, imaging sciences and engineering, display technologies and 3D displays, 3D image sensing, image-based information security, image recognition, biophotonics, and novel image sensors. It will be a forum for scientific interaction and collaboration between well-known scientists in the field and educational outreach to students. The workshop has been running for 17 years, starting with the Euro-American Workshop on Optical Pattern Recognition in La Rochelle, 1994. It is a small workshop (typically limited to 30-35 talks), with invited participants broadly from the area of information optics and photonics. Always there has been an emphasis on allowing time for interaction, collaboration, and networking in a friendly atmosphere. Participants stay together for lunch and social outings. Well-known researchers in the fields of optical information processing and advanced imaging techniques regularly attend the conference from Europe, USA, Japan, and Korea, and find it a refreshing, relaxed, and very profitable meeting. Previous workshop locations include Barcelona (1997), Colmar (1999), Valencia (2001), Toledo (2006), Reykjavik (2007), Annecy (2008), Paris (2009), Helsinki (2010), Benicasim (2011) and Quebec (2012). The workshop will consist of keynotes and invited talks (oral presentations are by invitation only). Regular submissions will be accepted as poster presentations on topics that include, but are not strictly limited to, those listed below. The program will include a "poster pop" session during which each poster presenter will have the opportunity to introduce his/her poster for 5 minutes to the conference attendees. Each presenter (keynote, invited, poster) is invited to submit a short manuscript that will be published online.