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Hello,

 

i need to georeference 800 maps.

Every map is from a grid that is 1km x 1km.

From the Scanning and the old paper it can be that the Map has a angle just like showing in the example picture below.

 

Is it possible to get the coordinates of the 4 Red points and set them to the coordinates that the Picture should have from the grid?

 

I know how to do it with the bounding box but i dont know how to deal with the transparency.

 

or is there a better way to make the georeferencing of 800 picutres more easy?

 

Example

Hi @fluusha​,

The RasterExtentsCoercer transformer may be helpful here, if you use the Data Extents option. This will give you the bounding polygon around the non-transparent area of the raster.

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