Rendering virtual objects in 3D environments

One or more non-transitory computer-readable media having instructions stored thereon that, when executed, cause performance of operations comprising:

• capturing, with a first computing device of a first user, a live stream video of an environment of the first user;
• displaying, with the first computing device, the live stream video of the environment of the first user;
• identifying, by the first computing device, a target object in the environment of the first user;
• sending, from the first computing device and for receipt by a second computing device of a second user, a representation of a portion of the environment of the first user, including sending a model of the target object for receipt by the second computing device,
• wherein the second computing device is configured to render the representation of the portion of the environment of the first user on a display of the second computing device,
• wherein the second computing device is configured to receive a user input defining an annotation in the portion of the environment of the first user,
• wherein the annotation has a defined spatial position with respect to one or more anchors in the portion of the environment of the first user;
• receiving, by the first computing device and as having been sent from the second computing device, data representing the annotation defined by the user input at the second computing device;
• and
• augmenting the live stream video of the environment of the first user at the first computing device with the annotation defined by the user input at the second computing device, wherein the annotation is shown in the live stream video at the defined spatial position with respect to one or more anchors in the portion of the environment of the first user.

A first computing device, comprising:

• one or more processors;
• and
• one or more computer-readable media having instructions stored thereon that, when executed by the one or more processors, cause performance of operations comprising:
• capturing, with the first computing device of a first user, a live stream video of an environment of the first user;
• displaying, with the first computing device, the live stream video of the environment of the first user;
• identifying, by the first computing device, a target object in the environment of the first user;
• sending, from the first computing device and for receipt by a second computing device of a second user, a representation of a portion of the environment of the first user, including sending a model of the target object for receipt by the second computing device,
• wherein the second computing device is configured to render the representation of the portion of the environment of the first user on a display of the second computing device,
• wherein the second computing device is configured to receive a user input defining an annotation in the portion of the environment of the first user,
• wherein the annotation has a defined spatial position with respect to one or more anchors in the portion of the environment of the first user;
• receiving, by the first computing device and as having been sent from the second computing device, data representing the annotation defined by the user input at the second computing device;
• and
• augmenting the live stream video of the environment of the first user at the first computing device with the annotation defined by the user input at the second computing device, wherein the annotation is shown in the live stream video at the defined spatial position with respect to one or more anchors in the portion of the environment of the first user.