Effect
What this is
Topographic flow reads the brightness of the picture as height, smooths it into terrain and draws contour lines, the lines a map uses to join points of equal height. The lines flow over time, and the terrain can morph from the first image into the second.
How to use it
- Tap the image to play the flow.
- Pick a preset, or set levels, line width and hill shading with the sliders.
- Swap in your own two images, then save a PNG or record a video.
Read the guide
Words: contour line · luminance · interpolation
Common questions
Where do my pictures go?
Nowhere. They are opened in your browser and drawn on your graphics card. Nothing is uploaded. The pictures you add stay on this device, in this browser, so the other lab tools can open them too; × on a picture removes it.