OpenAR is an Augmented Reality system built on Android. You can annotate your own scenes and retrieve them in real time.


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Overview

In a similar way to Layar and Wikitude, OpenAR aims at overlaying information on top of the reality. Simply hold your phone steadily : information about what you are facing is displayed. This is Augmented Reality (AR).

OpenAR focuses on sharing reviews from all users by providing a common server. Do you think this book in the library worths it ? Simply add a review on it. Next time one points his phone at the book, he will be notified about your review.

While most of AR systems only use location to retrieve information, OpenAR strives to use real time video recognition as well. This provides a more flexible way to find points of interest and allows objects not to be static. The librarian may want to change the book from one location to another, OpenAR can still retrieve reviews about it.

Since one of OpenAR's guidelines was to be open source, we needed a free platform to develop it. We chose Android for its philosophy to run on massive types of device. Moreover Android is supported by a strong community and is well documented.

In a nutshell, OpenAR is :

Principle

OpenAR is different from classical AR systems in that it uses both location and video scene recognition to retrieve information. Known points of interest are detected by a 3-step mechanism as follows :

Such a mechanism is triggered everytime the phone remains steady for a fixed period of time (2 seconds by default). If the best potential review is deemed acceptable, then the user is notified.

How does it work ?

All reviews are stored on a shared server which runs Apache, MySQL and PHP. We may see the server side of OpenAR as a webservice to all Android clients.

Several meta information are also stored along with reviews :

The whole set "picture+location+review" is called a "signature". This is what is actually stored in the database. Once a signature is sent to the server, the latter calculates descriptors from the picture so that we do not need to keep the whole image. Once the signature is in the database, anyone may retrieve the review from the same conditions (same location and similar scene).

We may define 2 basic operations :

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Screenshots

Regular installation

  1. Request a token at http://openar-project.org/.
  2. Configure your Android phone to accept unsigned applications :

    Settings > Applications > Unknown sources > Check

  3. Run the web browser of your phone.
  4. Download the application at http://openar-project.org/download. Previous versions are available at http://sourceforge.net/projects/openar/files, especially a version bundled for the Android emulator.
  5. Follow the instructions.
  6. Run the application :

    applications > openar

  7. Enter your token in the settings of the application :

    menu > Settings > Server

  8. For any troubleshooting please contact us at contact[at]openar-project[dot]org.

Developer

  1. Checkout the project from Sourceforge :

    $svn checkout http://openar.svn.sourceforge.net/svnroot/openar openar
    $ls openar/android/

  2. Run Eclipse and open the project as a regular Android project.
  3. The .apk packaged application is generated every time you compile the project. You can install it from your device by making it downloadable from a web server.
  4. If your device is plugged to your computer, Eclipse can also install it on the fly. A special configuration is required for the device.
  5. You can check the Sourceforge project at https://sourceforge.net/projects/openar/ for updated checkins.

Terms of Service and Conditions of Use

1. User's Acknowledgment and Acceptance of Terms

We provide the openar-project.org site, the OpenAR mobile application (available at http://sourceforge.net/projects/openar/) and various services to you, the user, subject to your compliance with all the terms, conditions, and notices contained or referenced herein (the "Terms of Use"), as well as any other written agreement between us and you.

BY USING THIS SITE, YOU AGREE TO BE BOUND BY THESE TERMS OF USE. IF YOU DO NOT WISH TO BE BOUND BY THE THESE TERMS OF USE, PLEASE EXIT THE SITE NOW. YOUR REMEDY FOR DISSATISFACTION WITH THIS SITE, OR ANY PRODUCTS, SERVICES, CONTENT, OR OTHER INFORMATION AVAILABLE ON OR THROUGH THIS SITE, IS TO STOP USING THE SITE AND/OR THOSE PARTICULAR PRODUCTS OR SERVICES. YOUR AGREEMENT WITH US REGARDING COMPLIANCE WITH THESE TERMS OF USE BECOMES EFFECTIVE IMMEDIATELY UPON COMMENCEMENT OF YOUR USE OF THIS SITE.

These Terms of Use are effective as of February 5th 2010. We expressly reserve the right to change these Terms of Use from time to time without notice to you. You acknowledge and agree that it is your responsibility to review this site and these Terms of Use from time to time and to familiarize yourself with any modifications. Your continued use of this site after such modifications will constitute acknowledgement of the modified Terms of Use and agreement to abide and be bound by the modified Terms of Use.

2. Description of Services

We make various services available on this site including, but not limited to, real time scene recognition, scene annotation.

We reserve the sole right to either modify or discontinue the site, including any of the site's features, at any time with or without notice to you.

3. Registration Data and Privacy

In order to access some of the services on this site, you will be required to use a token that can be obtained by completing our online registration form, which requests certain information and data ("Registration Data"), and maintaining and updating your Registration Data as required. By registering, you agree that all information provided in the Registration Data is true and accurate and that you will maintain and update this information as required in order to keep it current, complete, and accurate.

We will not disclose to third parties any Registration Data about you. The information we obtain through your use of this site, including your Registration Data, is only required to enable a multi users service and will never be disclosed to any third party.

4. Conduct on Site

Your use of the site is subject to all applicable laws and regulations, and you are solely responsible for the substance of your communications through the site and the Openar mobile application. By anotating scenes, you agree that you will not that:

a. is unlawful, threatening, abusive, harassing, defamatory, libelous, deceptive, fraudulent, invasive of another's privacy, tortious, contains explicit or graphic descriptions or accounts of sexual acts (including but not limited to sexual language of a violent or threatening nature directed at another individual or group of individuals), or otherwise violates our rules or policies;

b. victimizes, harasses, degrades, or intimidates an individual or group of individuals on the basis of religion, gender, sexual orientation, race, ethnicity, age, or disability;

c. infringes on any patent, trademark, trade secret, copyright, right of publicity, or other proprietary right of any party;

d. constitutes unauthorized or unsolicited advertising, junk or bulk email (also known as "spamming"), chain letters, any other form of unauthorized solicitation, or any form of lottery or gambling;

e. contains software viruses or any other computer code, files, or programs that are designed or intended to disrupt, damage, or limit the functioning of any software, hardware, or telecommunications equipment or to damage or obtain unauthorized access to any data or other information of any third party; or

f. impersonates any person or entity, including any of our employees or representatives.

We neither endorse nor assume any liability for the contents submitted by third party users of the site and the OpenAR mobile application. We generally do not pre-screen, monitor, or edit the content posted by users of communications services and especially scene anotations. However, we have the right at to remove any content that, in our judgment, does not comply with these Terms of Use and any other rules of user conduct for our site, or is otherwise harmful, objectionable, or inaccurate. We are not responsible for any failure or delay in removing such content. You hereby consent to such removal and waive any claim against us arising out of such removal of content. See "Use of Your Materials" below for a description of the procedures to be followed in the event that any party believes that content posted on this site infringes on any patent, trademark, trade secret, copyright, right of publicity, or other proprietary right of any party.

In addition, you may not use your account to breach security of another account or attempt to gain unauthorized access to another network or server. Not all areas of the site may be available to you or other authorized users of the site. You shall not interfere with anyone else's use and enjoyment of the site or other similar services. Users who violate systems or network security may incur criminal or civil liability.

You agree that we may at any time, and at our sole discretion, terminate your membership, account, or other affiliation with our site without prior notice to you for violating any of the above provisions. In addition, you acknowledge that we will cooperate fully with investigations of violations of systems at other sites, including cooperating with law enforcement authorities in investigating suspected criminal violations.

5. Third Party Sites and Information

This site may link you to other sites on the Internet or otherwise include references to information, documents, software, materials and/or services provided by other parties. These sites may contain information or material that some people may find inappropriate or offensive. These other sites and parties are not under our control, and you acknowledge that we are not responsible for the accuracy, copyright compliance, legality, decency, or any other aspect of the content of such sites, nor are we responsible for errors or omissions in any references to other parties or their products and services. The inclusion of such a link or reference is provided merely as a convenience and does not imply endorsement of, or association with, the site or party by us, or any warranty of any kind, either express or implied.

We do not warrant that your use of materials displayed on, or obtained through, this site will not infringe the rights of third parties. See "User's Materials" below for a description of the procedures to be followed in the event that any party believes that content posted on this site infringes on any patent, trademark, trade secret, copyright, right of publicity, or other proprietary right of any party.

7. Unauthorized Use of Materials

We respect the intellectual property of others, and we ask you to do the same. If you or any user of this site believes its copyright, trademark or other property rights have been infringed by a posting on this site or through the OpenAR mobile application, you or the user should send notification to our Designated Agent (as identified below) immediately. To be effective, the notification must include:

1. Identify in sufficient detail the copyrighted work that you believe has been infringed upon or other information sufficient to specify the copyrighted work being infringed).

2. Identify the material that you claim is infringing the copyrighted work listed in item #1 above.

3. Provide information reasonably sufficient to permit us to contact you (email address is preferred).

4. Provide information, if possible, sufficient to permit us to notify the owner/administrator of the allegedly infringing webpage or other content (email address is preferred).

5. Include the following statement: "I have a good faith belief that use of the copyrighted materials described above as allegedly infringing is not authorized by the copyright owner, its agent, or the law."

6. Include the following statement: "I swear, under penalty of perjury, that the information in the notification is accurate and that I am the copyright owner or am authorized to act on behalf of the owner of an exclusive right that is allegedly infringed."

7. Send the written communication to the following email address: contact@openar-project.org

8. Disclaimer of Warranties

ALL MATERIALS AND SERVICES ON THIS SITE ARE PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, OR THE WARRANTY OF NON-INFRINGEMENT. WITHOUT LIMITING THE FOREGOING, WE MAKE NO WARRANTY THAT (A) THE SERVICES AND MATERIALS WILL MEET YOUR REQUIREMENTS, (B) THE SERVICES AND MATERIALS WILL BE UNINTERRUPTED, TIMELY, SECURE, OR ERROR-FREE, (C) THE RESULTS THAT MAY BE OBTAINED FROM THE USE OF THE SERVICES OR MATERIALS WILL BE EFFECTIVE, ACCURATE OR RELIABLE, OR (D) THE QUALITY OF ANY PRODUCTS, SERVICES, OR INFORMATION PURCHASED OR OBTAINED BY YOU FROM THE SITE FROM US OR OUR AFFILIATES WILL MEET YOUR EXPECTATIONS OR BE FREE FROM MISTAKES, ERRORS OR DEFECTS.

THIS SITE COULD INCLUDE TECHNICAL OR OTHER MISTAKES, INACCURACIES OR TYPOGRAPHICAL ERRORS. WE MAY MAKE CHANGES TO THE MATERIALS AND SERVICES AT THIS SITE, INCLUDING THE PRICES AND DESCRIPTIONS OF ANY PRODUCTS LISTED HEREIN, AT ANY TIME WITHOUT NOTICE. THE MATERIALS OR SERVICES AT THIS SITE MAY BE OUT OF DATE, AND WE MAKE NO COMMITMENT TO UPDATE SUCH MATERIALS OR SERVICES.

You understand and agree that the services available on this site are provided "AS IS" and that we assume no responsibility for the timeliness, deletion, mis-delivery or failure to store any user communications or personalization settings.

9. Limitation of Liability

IN NO EVENT SHALL WE OR OUR AFFILIATES BE LIABLE TO YOU OR ANY THIRD PARTY FOR ANY SPECIAL, PUNITIVE, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING, WITHOUT LIMITATION, THOSE RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, AND ON ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OF THIS SITE OR OF ANY WEB SITE REFERENCED OR LINKED TO FROM THIS SITE.

SOME JURISDICTIONS PROHIBIT THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU.

10. Indemnification

Upon a request by us, you agree to defend, indemnify, and hold us and our Affiliates harmless from all liabilities, claims, and expenses, including attorney's fees, that arise from your use or misuse of this site and the OpenAR mobile application. We reserve the right, at our own expense, to assume the exclusive defense and control of any matter otherwise subject to indemnification by you, in which event you will cooperate with us in asserting any available defenses.

11. Security and Password

You are solely responsible for maintaining the confidentiality of your token and account and for any and all statements made and acts or omissions that occur through the use of your token and account. Therefore, you must take steps to ensure that others do not gain access to your token and account. You may not transfer or share your account with anyone, and we reserve the right to immediately terminate your account if you do transfer or share your account.

14. International Use

Although this site may be accessible worldwide, we make no representation that materials on this site are appropriate or available for use in locations outside France, and accessing them from territories where their contents are illegal is prohibited. Those who choose to access this site from other locations do so on their own initiative and are responsible for compliance with local laws.

15. Termination of Use

You agree that we may, in our sole discretion, terminate or suspend your access to all or part of the site with or without notice and for any reason, including, without limitation, breach of these Terms of Use. Any suspected fraudulent, abusive or illegal activity may be grounds for terminating your relationship and may be referred to appropriate law enforcement authorities.

Upon termination or suspension, regardless of the reasons therefore, your right to use the services available on this site immediately ceases, and you acknowledge and agree that we may immediately deactivate or delete your account and all related information and files in your account and/or bar any further access to such files or this site. We shall not be liable to you or any third party for any claims or damages arising out of any termination or suspension or any other actions taken by us in connection with such termination or suspension.

16. Governing Law

This site (excluding any linked sites) and the OpenAR mobile application is controlled by us from France. It can be accessed from other countries around the world. As each of these places has laws that may differ from those of france, by accessing this site both of us agree that the statutes and laws of France, without regard to the conflicts of laws principles thereof and the United Nations Convention on the International Sales of Goods, will apply to all matters relating to the use of this site and the purchase of products and services available through this site. Each of us agrees and hereby submits to the exclusive personal jurisdiction and venue any court of competent jurisdiction within the State of france with respect to such matters.

19. Miscellaneous

In any action to enforce these Terms of Use, the prevailing party will be entitled to costs and attorneys' fees. Any cause of action brought by you against us must be instituted with one year after the cause of action arises or be deemed forever waived and barred.

You agree not to sell, resell, reproduce, duplicate, copy or use for any commercial purposes any portion of this site, or use of or access to this site.

20. Contact Information

If you notice that any user is violating these Terms of Use, please email us at contact@openar-project.org.

 

This project is hosted by SourceForge