Data
We select a reference measurement and explain what it describes: height, length or span.
About the project
Nature’s diversity.
One shared scale.
Sometimes two animals side by side say more than numbers alone.
Hapi Animals lets you compare animal sizes and explore their diversity. We bring silhouettes, clearly defined measurements and sources together in one accessible space.
Open the comparison toolMethod
From data
to a shared board.
Measurement points
We calibrate the framing and selected points on the silhouette. Side and front views have separate parameters.
Shared scale
We convert the silhouettes to a shared unit and fit the whole board to the screen.
Calibration details
The distance Δp between image points is linked to the reference measurement D. The factor k = D / Δp gives the scale in cm/px. The renderer converts coordinates to a shared unit of length.
Cropping, repositioning and mirroring preserve the assigned measurement. Silhouettes are not resized to fill identical frames.
A shared scale does not remove uncertainty in the data. Size depends on the individual, sex and age; profiles identify estimates and reconstructions.
Materials
Sources and transparency.
We use photographs and illustrations, including reconstructions prepared with AI assistance. Relevant profiles and photographs identify material origins, authors and sources.
We continue to expand and correct the collection. If you notice an error, send us a link to the comparison or profile. A reliable source will help us investigate.
Contact
Let’s talk.
Have feedback on a comparison, a question or an idea for working together? Get in touch.