Method for estimating a distance from a first communication device to a second communication device, and corresponding communication devices, server and system
First Claim
Patent Images
1. A method for estimating a distance from a first communication device to a second communication device,wherein the method comprises:
- Taking a picture of the second communication device by the first communication device;
Receiving from the second communication device a description comprising at least one piece of information related to dimensions of at least part of the second communication device and at least one reference picture of at least part of the second communication device;
Identifying at least part of the second communication device in said picture, by using said description;
Estimating a distance from the first communication device to the second communication device by using;
said at least one piece of information related to dimensions of at least part of the second communication device, anddimensions of said at least part of the second communication device identified in and determined from said picture.
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Abstract
The invention concerns a method for estimating a distance from a first communication device to a second communication device. According to an aspect of the invention, the method comprises:
- Taking a picture of the second communication device by the first communication device;
- Obtaining a description of the second communication device;
- Identifying the second communication device in the picture, by using said description;
- Estimating a distance from the first communication device to the second communication device by using the description of the second communication device and dimensions of the second communication device identified in the picture.
16 Citations
13 Claims
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1. A method for estimating a distance from a first communication device to a second communication device,
wherein the method comprises: -
Taking a picture of the second communication device by the first communication device; Receiving from the second communication device a description comprising at least one piece of information related to dimensions of at least part of the second communication device and at least one reference picture of at least part of the second communication device; Identifying at least part of the second communication device in said picture, by using said description; Estimating a distance from the first communication device to the second communication device by using; said at least one piece of information related to dimensions of at least part of the second communication device, and dimensions of said at least part of the second communication device identified in and determined from said picture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A communication device comprising:
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a camera; a memory for at least temporarily memorizing a picture of a second communication device taken by the camera; at least one processor configured to; identify at least part of the second communication device in said picture, by using a description of the second communication device, said description comprising at least one piece of information related to dimensions of at least part of the second communication device and at least one reference picture of at least part of the second communication device; estimate a distance from the first communication device to the second communication device by using; said at least one piece of information related to dimensions of at least part of the second communication device, and dimensions of said at least part of the second communication device identified in and determined from said picture, a receiver for receiving said description from the second communication device.
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12. A server for estimating a distance from a first communication device to a second communication device,
wherein the server comprises: -
a receiver for receiving from a first communication device a picture taken by the first communication device, a distance measurement request and at least one description of at least one second communication device, said description comprising at least one piece of information related to dimensions of at least part of the second communication device, and at least one reference picture of at least part of the second communication device; at least one processor configured to; identify in said picture at least part of at least one second communication device by using said description of the second communication device, estimate a distance from the first communication device to every second communication device at least partly identified in said picture, said estimation module using; said at least one piece of information related to dimensions of at least part of the second communication device, and dimensions of said at least part of the second communication device identified and determined from in said picture; a transmitter for transmitting to the first communication device a list of every second communication device at least partly identified in said picture associated with a corresponding estimated distance.
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13. A system for estimating a distance from a first communication device to a second communication device,
wherein the system comprises: -
said first communication device comprising; a camera for taking a picture of the second communication device; a receiver for receiving a description of the second communication device, said description comprising at least one piece of information related to dimensions of at least part of the second communication device, and at least one reference picture of at least part of the second communication device; at least one processor configured to; identify at least part of the second communication device in said picture, by using said description; estimate a distance from the first communication device to the second communication device by using;
said at least one piece of information related to dimensions of at least part of the second communication device,
dimensions of said at least part of the second communication device identified in and determined from said picture, anda second communication device comprising a receiver for receiving a description request from said first communication device, and a transmitter for transmitting to said first communication device said description or an identifier of said second communication device.
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Specification