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Matching an approximately located query image against a reference image set

a technology of image set and query image, applied in the field of digital imagery, can solve the problems of computational intensive and time-consuming mobile visual search

Inactive Publication Date: 2012-05-10
GOOGLE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach enables efficient and accurate image matching by improving the accuracy of geolocation verification and providing reliable match confidence indicators, enhancing the precision of image recognition and classification on mobile devices.

Problems solved by technology

However, mobile visual searching can be computationally intensive as well as time consuming, and depending on the device that captures the image, may rely on incomplete or inaccurate location information associated with the image.

Method used

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  • Matching an approximately located query image against a reference image set
  • Matching an approximately located query image against a reference image set
  • Matching an approximately located query image against a reference image set

Examples

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Embodiment Construction

[0023]Aspects, features and advantages of the invention will be appreciated when considered with reference to the following description of preferred embodiments and accompanying figures. The same reference numbers in different drawings may identify the same or similar elements. Furthermore, the following description is not limiting; the scope of the invention is defined by the appended claims and equivalents.

[0024]As noted above, users of mobile devices may take pictures of people, places or things of interest. FIG. 1 is an exemplary image 100 which may be captured by a mobile user device. An example of a street level image is an image of geographic objects, people and / or objects that was captured by a camera at an angle generally perpendicular to the ground, or where the camera is positioned at or near ground level. Both the geographic objects in the image and the camera have a geographic location relative to one another. Thus, as shown in FIG. 1, the street level image 100 may rep...

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Abstract

Aspects of the invention pertain to matching a selected image / photograph against a database of reference images having location information. The image of interest may include some location information itself, such as latitude / longitude coordinates and orientation. However, the location information provided by a user's device may be inaccurate or incomplete. The image of interest is provided to a front end server, which selects one or more cells to match the image against. Each cell may have multiple images and an index. One or more cell match servers compare the image against specific cells based on information provided by the front end server. An index storage server maintains index data for the cells and provides them to the cell match servers. If a match is found, the front end server identifies the correct location and orientation of the received image, and may correct errors in an estimated location of the user device.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application is a continuation of U.S. patent application Ser. No. 12 / 632,338, filed Dec. 7, 2009, the entire disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]Aspects of the invention relate generally to digital imagery. More particularly, aspects are directed to matching a received image with geolocation information against selected reference images.[0004]2. Description of Related Art[0005]Mobile user devices such as cellular telephones and personal digital assistants (“PDAs”) often include digital cameras among other features. Such devices marry the benefits of wireless access with electronic photography. A user may take pictures of friends and family, points of interest, etc., and share those pictures instantly.[0006]Image recognition can be used on the pictures. For instance, applications such as mobile visual search programs may analyze these pictures i...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06K9/68
CPCG06K9/00671G06K9/00704G06F16/29G06F16/583G06F16/587G06V20/39G06V20/70G06V20/20
Inventor FLYNN, JOHNBUDDEMEIER, ULRICHSTEWENIUS, HENRIKNEVEN, HARTMUTBRUCHER, FERNANDOADAM, HARTWIG
Owner GOOGLE LLC