| CPC H04N 21/23439 (2013.01) [H04N 21/437 (2013.01); H04N 21/6437 (2013.01); H04N 21/6587 (2013.01)] | 19 Claims |
|
1. A communication method between a plurality of endpoints, wherein a first endpoint of the plurality of endpoints comprises an imaging device, the method comprising:
the first endpoint sending a video stream acquired by the imaging device to a second endpoint of the plurality of endpoints for video communication, by using a first communication channel between the first and second endpoints;
any of the plurality of endpoints initiating a request for requesting the first endpoint to send an image to the second endpoint, wherein the image is a still image;
the first endpoint respectively generating a first version of the image and a second version of the image;
wherein the first and second versions of the image depict one or more same objects;
wherein at least one property of the first version of the image is different from said at least one property of the second version of the image, such that a quality of the first version of the image is lower than a quality of the second version of the image;
the first endpoint respectively sending the first and second versions of the image to the second endpoint; and
the second endpoint receiving the first version of the image prior to receiving the second version of the image;
the first endpoint sending information of the second version of the image to the second endpoint, prior to sending the second version of the image to the second endpoint;
in response to the information, the second endpoint sending a reply to the first endpoint indicating accepting or refusing to receive the second version of the image;
if the reply indicating accepting to receive the second version of the image, the first endpoint sending the second version of the image to the second endpoint.
|