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Memorygraph is an app to create the layer of memories. Taking photographs with the same composition offers diverse applications such as estimating the location of old photographs, recording recovery from the disaster, and pop culture tourism to visit "sacred places."

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About Memorygraph

Memorygraph is an app to create the layer of memories. Taking photographs with the same composition offers diverse applications such as estimating the location of old photographs, recording recovery from the disaster, and pop culture tourism to visit "sacred places."

The basic functionality of Memorygraph is to have a semi-transparent overlay of old photograph on the viewfinder of a camera, and press a shutter button when the current landscape makes a good matching with the old photograph. This became possible after the debut of smart phones. We would like to apply this mechanism "suggesting the next photograph" to various applications such as disaster and tourism.

Memorygraph solves a problem of taking photographs of the same composition. Using a traditional camera, this is a hard task because you need mental rotation of the photograph to match with the landscape, but Memorygraph allows direct comparison of photographs and landscape, which makes the fixed point observation makes much easier.

Memorygraph also transforms the task of taking same photographs to an enjoyable process. Finding the same composition has a gamification effect, which means that difficulty becomes challenge to achieve the goal. In addition, experiencing this challenge for the "sacred place" of the user gives a chance to experience the viewpoint of the pop culture work at the level of physical body.

This kind of app leads to the creation of a new photographic culture and a new photographic archive based on making creative links such as citing old photographs or adding new elements to old photographs. In addition, taking the same photographs in a participatory manner may lead to a new cultural movement to contribute to the society by taking touristic photographs at the same place.

Please note that Memorygraph is the opposite of augmented reality (AR). Memorygraph uses overlay of a photograph on a viewfinder of a camera, not on the real space. This leads to fundamental difference of the nature of two approaches. AR is designed as an exhibition tool to passively browse photographs, while Memorygraph is designed as a participatory tool to actively being involved in field work.

For your information, the predecessor of Memorygraph, Memory Hunting, has more detailed information such as event reports. Difference between Memorygraph and Memory Hunting is that Memorygraph allows the overlay of personal photographs, while Memory Hunting allows the overly of only public photographs which are shared by people. In the future, Memorygraph will be upper compatible with Memory Hunting.


Application to Disaster Response and Recovery

A fixed point observation in disaster affected areas is a typical way of making archives that record disaster recovery before the disaster, just after the disaster, and on the recovering process. Memorygraph allows taking "before and after images" in a participatory manner using mobile phones.


Application to Tourism

Taking a photograph with the same composition at a touristic place has meaning in pop culture tourism, when a person want to find the same scene that appeared in the work of anime, movie, and music. Another application is a game, such as photographic orienteering, which uses the difficulty of taking the same photograph as achievement in games.

Support

  1. Grant-in-Aid for Scientific Research, No. 16H02920, 2016-2018
  2. Center for Integrated Area Studies
  3. Center for Open Data in the Humanities, Joint Support-Center for Data Science Research, Research Organization of Information and Systems

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