1. A method for implementing a video conference, comprising: obtaining in real time a first image of a first scene from a main camera located in a first conference site; obtaining in real time a second image of a second scene from an auxiliary camera located in the first conference site, wherein the second scene is part of the first scene, and wherein the second scene comprises a target object; generating a target image in real time by superimposing the second image over the first image, wherein the target image is based on a location of the target object in the first conference site, wherein the target image contains an enlarged detail of the target object from the second image, and wherein a location of the second image in the target image corresponds to the location of the target object in the first conference site; and sending the target image in real time to a display device located in a second conference site for display of the target image.