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四角项目能够将背景信息嵌入图片的四个角，有兴趣的观者可以深入探索。增强图片语境化不仅给摄影师更多话语权，也提高了图片的可信度。
该项目由Fred Ritchin构思并带领完成。2004年，他在阿姆斯特丹世界新闻摄影比赛（World Press Photo）颁奖典礼上的主题演讲中首次介绍并演示了这个想法。
该项目最初的编程是在Jonathan Worth监督下由Newcastle University的Open Lab完成的。四角项目接受过国际摄影中心（ International Center of Photography ）和世界新闻摄影比赛基金会的支持，尤其感谢David Campbell慷慨解囊，也感谢巴西SuperUber的及时帮助。
最终界面交互由Corey Tegeler设计和开发，并由国际摄影中心的学生进行了用户测试。Perri Hofmann管理了该项目，在为项目设计和开发后的用户测试中做出了重要贡献。该软件是开源的，可供公众免费使用。
Fred Ritchin
Fred Ritchin, who first proposed the Four Corners idea in 2004 as keynote speaker at the annual World Press Photo Awards Ceremony in Amsterdam, is Dean Emeritus of the School at the International Center of Photography. Previously he was Professor of Photography and Imaging at New York University’s Tisch School of the Arts, where he also taught in the Interactive Telecommunications Program (1991-2014).
Ritchin created the first multimedia version of the New York Times in 1994-95. The website that he then created for the New York Times on the Web with photographer Gilles Peress in 1996, “Bosnia: Uncertain Paths to Peace,” was nominated by the New York Times for a Pulitzer Prize in Public Service, but immediately rejected by the Pulitzer Committee because it was not on paper.
Ritchin has written three books on the future of imaging: In Our Own Image: The Coming Revolution in Photography (Aperture, 1990), After Photography (W. W. Norton, 2008), and Bending the Frame: Photojournalism, Documentary, and the Citizen (Aperture, 2013). His 1984 piece for the New York Times Magazine, “Photography’s New Bag of Tricks,” was the first major article on the potential impacts of the digital revolution on photography and related imaging. He has also co-authored and contributed essays to several dozen books.
In 1999 Ritchin co-founded PixelPress, an online publication experimenting with new methods of storytelling, and collaborating with humanitarian organizations such as UNICEF, WHO, UNFPA, Crimes of War, and others on media projects including books, exhibitions, and Web sites promoting human rights. Previously he was picture editor of the New York Times Magazine, executive editor of Camera Arts magazine (Ziff-Davis), and founding director of the Photojournalism and Documentary Photography one-year full-time educational program at the International Center of Photography. He was recently given the John Long Award in Ethics by the National Press Photographers’ Association for his contributions to ethical behaviors in photojournalism.