A system comprising: a head-mounted display ; a first camera ; a second camera ; one or more processors ; and one or more non-transitory computer-readable media storing computer-executable instructions that, when executed by the one or more processors , cause the one or more processors to perform acts comprising: receiving, from the first camera , first image data representing a first portion of an environment ; receiving, from the second camera , second image data representing a second portion of the environment ; generating, based at least in part on the first image data and the second image data, a first depth map of a portion of the environment ; receiving, from a tracking system , data corresponding to a point-of-view of a user within the environment ; characterised by further performing acts comprising: generating a second depth map based at least in part on the first depth map and the data; generating third image data based at least in part on projecting the first image data and the second image data onto the second depth map; and transmitting the third image data to the head-mounted display . a head-mounted display ; a first camera ; a second camera ; one or more processors ; and one or more non-transitory computer-readable media storing computer-executable instructions that, when executed by the one or more processors , cause the one or more processors to perform acts comprising: receiving, from the first camera , first image data representing a first portion of an environment ; receiving, from the second camera , second image data representing a second portion of the environment ; generating, based at least in part on the first image data and the second image data, a first depth map of a portion of the environment ; receiving, from a tracking system , data corresponding to a point-of-view of a user within the environment ; characterised by further performing acts comprising: generating a second depth map based at least in part on the first depth map and the data; generating third image data based at least in part on projecting the first image data and the second image data onto the second depth map; and transmitting the third image data to the head-mounted display . receiving, from the first camera , first image data representing a first portion of an environment ; receiving, from the second camera , second image data representing a second portion of the environment ; generating, based at least in part on the first image data and the second image data, a first depth map of a portion of the environment ; receiving, from a tracking system , data corresponding to a point-of-view of a user within the environment ; characterised by further performing acts comprising: generating a second depth map based at least in part on the first depth map and the data; generating third image data based at least in part on projecting the first image data and the second image data onto the second depth map; and transmitting the third image data to the head-mounted display . generating a second depth map based at least in part on the first depth map and the data; generating third image data based at least in part on projecting the first image data and the second image data onto the second depth map; and transmitting the third image data to the head-mounted display . <EOS>