A process for rendering objects includes detecting a first surface of an object oriented in a first position. A first image is captured with a camera and at least partially captures a first marker on the first surface. A prompt requests manipulation of the object into a second position to expose a second surface to the camera in response to detecting a missing image of a marker. A second image of the second surface is captured with the camera and at least partially captures a second marker on the second surface. The object is rendered as a virtual representation in a virtual environment in response to detecting the first marker in the first image and the second marker in the second image. The size of the virtual representation is estimated based on the detected size of at least one of the first marker and the second marker.