What is meant by motion compensation?

What is meant by motion compensation?

Motion compensation is an algorithmic technique used to predict a frame in a video, given the previous and/or future frames by accounting for motion of the camera and/or objects in the video. It is employed in the encoding of video data for video compression, for example in the generation of MPEG-2 files.

What is motion estimation and compensation?

Motion estimation examines the movement of objects in an image sequence to try to obtain vectors representing the estimated motion. Motion compensation uses the knowledge of object motion so obtained to achieve data compression.

What are the main steps of video compression based on motion compensation MC?

The three main steps of these algorithms are:

  • Motion estimation (motion vector search)
  • Motion compensation – based prediction.
  • Derivation of the prediction error – the difference.

What is motion compensation VR?

Motion compensation is a feature that helps smooth frame rates in VR applications for a more seamless visual experience.

What are process techniques used in video coding?

The coding techniques reviewed include quantization, predictive coding, entropy coding, orthogonal transform, motion estimation/compensation, and subband processing.

How do I use OpenVR?


  1. Enable virtual reality support. Open the Player Settings (menu: Edit > Project Settings > Player), select Other Settings and check the Virtual Reality Supported checkbox.
  2. Use the Virtual Reality SDK list displayed below the checkbox to add OpenVR.
  3. Enter Play Mode in the Editor to test the build.

What is meant by motion vector?

motion vector: a two-dimensional vector used for inter prediction that provides an offset from the coordinates in the decoded picture to the coordinates in a reference picture.

What is an index vector?

Index vectors, or IV, represent the widest, weak-strong range of pointing. In that, they are represented by an actual arrow that points in the direction that the individuals being filmed in a shot are actually looking.

What is the difference between AVC and HEVC?

HEVC is the next generation compression standard that offers a number of enhancements over AVC. HEVC compression is 50% more efficient than AVC, which translates into maintaining the same video quality at half the bitrate or double the video quality at the same bitrate.

Is OpenVR the same as SteamVR?

openVR – Hardware independent layer providing APIs for peripheral access. That is it can provide access to either Oculus or Vive hardware via a defined interface. SteamVR – Provides access to hardware to games developed either in unity or unreal. Unity3D – A game engine to develop games.

What is OpenVR mode?

OpenVR is an API and runtime that allows access to VR hardware from multiple vendors without requiring that applications have specific knowledge of the hardware they are targeting.