METHOD AND SYSTEM FOR IMAGE-BASED INFORMATION RETRIEVAL
5 Assignments
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Accused Products
Abstract
For retrieving information based on images, a first image is taken (S1) using a digital camera associated with a communication terminal (1). Query data related to the first image is transmitted (S3) via a communication network (2) to a remote recognition server (3). In the remote recognition server (3) a reference image is identified (S4) based on the query data. Subsequently, in the remote recognition server (3), a Homography is computed (S5) based on the reference image and the query data, the Homography mapping the reference image to the first image. Moreover, in the remote recognition server (3), a second image is selected (S6) and a projection image is computed (S7) of the second image using the Homography. By replacing a part of the first image with at least a part of the projection image, an augmented image is generated (S8, S10) and displayed (S11) at the communication terminal (1). Efficient augmentation of the first image taken with the camera is made possible by remaining in the planar space and dealing with two-dimensional images and objects only.
100 Citations
48 Claims
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1-23. -23. (canceled)
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24. A method of information retrieval based on images, the method comprising:
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receiving query data related to a first image; identifying a reference image based on the query data; computing in a recognition server a perspective transformation matrix based on the reference image and the query data, the perspective transformation matrix mapping the reference image to the first image; selecting a second image in the recognition server; computing in the recognition server a projection image of the second image using the perspective transformation matrix; generating an augmented image by replacing at least a part of the first image with at least a part of the projection image; and transmitting the augmented image for display. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 47, 48)
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35. A system for information retrieval based on images, the system comprising:
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a recognition server configured to receive query data related to a first image from a communication terminal, and to identify a reference image based on the query data; wherein the recognition server is further configured to compute a perspective transformation matrix based on the reference image and the query data, the perspective transformation matrix mapping the reference image to the first image, to select a second image, and to compute a projection image of the second image using the perspective transformation matrix; and the system is further configured to generate the augmented image by replacing at least a part of the first image with at least a part of the projection image, - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification