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Viewing Channels

This page covers the core single-dataset workflow: open an image, navigate it, and inspect channels quickly.

  • Pan: left-drag
  • Zoom: mouse wheel or trackpad pinch
  • Fit view: F
  • Fit the current view target: double click

Working With Layers

The left panel contains the layer list and layer tools.

You can:

  • change which layer is active
  • toggle layer visibility
  • reorder layers
  • adjust per-channel colors
  • choose tools such as pan, move-layer, transform, and mask drawing

Contrast And Color

For image channels, the active layer exposes contrast and color controls in the right panel.

Current behavior:

  • channels are composited additively
  • channel colors and visibility can be changed independently
  • on the GPU path, contrast updates are fast because they do not require reloading image tiles

Channel Transforms

If a channel layer supports transforms, select the Transform tool and interact with the overlay box:

  • drag inside the box to translate
  • drag corners to scale
  • drag the rotation handle to rotate

This is useful when channels need manual alignment adjustments.

Tips For Large Datasets

  • the viewer draws coarse levels first and refines as data loads
  • visible tiles are loaded on demand rather than decoding the whole pyramid
  • if zooming feels incomplete, pause briefly to let higher-resolution tiles arrive