Doug Johnson Productions

Scope guide · History & 3D

3D Picture

Keep the current picture and a rolling stack of sampled images in a rotatable 15-second history.

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Learn & Reference / Scope library / 3D Picture

What did the picture look like a few seconds ago?

Add this view from Add scope > 3D Picture, then choose the input you want to inspect. Use the pane's i button for its in-app reading guide.

Read this example.

Application-rendered color-bar history fixture. Repeated still frames make the geometry easy to read.
Application-rendered color-bar history fixture. Repeated still frames make the geometry easy to read. Click the image for a larger view.
  1. The newest, opaque image is at the edge labeled 0s.
  2. Older sampled images recede and fade. Repeated bars show the same picture at successive ages.
  3. Depth is elapsed time; horizontal and vertical coordinates retain picture geometry.

Try it yourself.

  1. Open 3D Picture from Add scope or the Picture cube icon.
  2. Choose a moving source for changes or a still to learn the geometry.
  3. Drag to rotate, wheel to zoom, double-click to reset, and Freeze to inspect.

Useful controls.

  • RGB, Y′ and linear luminance select representation.
  • The live plane updates with rendering; two 192×128 snapshots per second build history.
  • Clear history starts fresh; workspaces retain display settings.

History supplies sampled visual context. Use media playback or Recorder when retaining media for later review.