Hydro Poster

Poster verification

Georeferencer

Restore geographic coordinates to a Hydro Poster image, then inspect the alignment before using it.

  1. 1
    UploadChoose a poster image
  2. 2
    ContextConfirm source geography
  3. 3
    ReviewCheck the evidence
Step 1

Upload your poster

Drop a poster image hereor choose a PNG, JPEG, or TIFF

Up to 25 MB and 40 megapixels. Embedded provenance is detected automatically.

Step 2

Confirm source context

Metadata and control points Advanced inputs · optional

Most Studio exports need none of these. A manifest comes from a georeferencing result; control points are independently measured reference pairs supplied by the user.

At least 12 well-distributed pairs, with source_x/source_y in EPSG:3857 and pixel_x/pixel_y in the uploaded image. The system withholds points for validation.

Only provenance and quality metadata are saved. Image processing is temporary; download the results to keep them.

Step 3 · Review

Your alignment workspace

After analysis, you’ll see the source overlay, network displacement, withheld-point validation, geographic inspection, and downloads for the GeoTIFF and evidence reports.

Scope notePerspective distortion and heavily edited river geometry are outside this version’s scope.