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How do i Down-Size Satellite image 16044x13836 to Proper Size - 73.15 km2 (28.24 sq mi)

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Trying to complete first real world terrain

How does everyone Downsize/Resample a large image without losing quality into a 2048x2048 workspace or any for that matter, is there a size tutorial

The island is 11.3 kilometres (7.0 mi) in length and 12.4 kilometres (7.7 mi) in width; it has an area of 73.15 km2 (28.24 sq mi).
From this website on Terrain Size should I be using this below since its the closest -Link..

http://tactical.nekromantix.com/wiki/doku.php?id=arma:terrain:grid_cell_size

grid: 2048                cell : 6                    km x km :  12.2           Square km: 150.994944

Heightmap Image:

 

The original heightmap download size is 1081x1081 

e9a9a48a6c4b88c16fac9129cf044f89.png

 

 

Satellite image: 

488018b56abcc13fc75cc534547bf420.png

 

85b2bd121903c86725aff2292b9003ad.png

 

 

 

 

 

If you still dont get what i mean , this is 2048 resolution 

 

247626c6ce52c46e6c1b3763715401b2.png

 

This is Original 

 

 

8eab2dc79c8a6043922edb5855e370e3.jpg

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2048x2048 is way too small for a sat image, If your grid size is 2048 with a cell size of 6, you want your sat/surface masks to have a resolution of 1. Which makes the image 12288 x 12288 

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2048x2048 is way too small for a sat image, If your grid size is 2048 with a cell size of 6, you want your sat/surface masks to have a resolution of 1. Which makes the image 12288 x 12288

How did you get that number?

 

I am trying this size and generating right now, But i changed it inside TerrainBuilder to 20480 and it matches the heightmap from a 12288x12288 sat image ^_^ hopefuly its right

 

So i did that and i got no water inside buldozer.

 

>Edit < forgot cellsize of 6. oops.

 

what should texture layer be  ? >

 

47c1cb0e57ee3b8bf187305670c72a6c.png

388949c01153c9cdd770987775596c31.png

 

92b3abf738fa1f429456d9fdd5cb2a90.gif

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How did you get that number?

 

 

You said in the first post

 

grid: 2048                cell : 6                    km x km :  12.2           Square km: 150.994944

 

 

I just worked the number out from that.

 

 

As for the water, maybe your height map isn't lower enough :wacko: Open it in L3DT, that can change it easy. I think terrain builder can also do it, but I always just used L3DT

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You said in the first post

 

grid: 2048                cell : 6                    km x km :  12.2           Square km: 150.994944

 

 

I just worked the number out from that.

 

 

As for the water, maybe your height map isn't lower enough :wacko: Open it in L3DT, that can change it easy. I think terrain builder can also do it, but I always just used L3DT

 

I actually said should i be using this size, the area of the island is 73.15 km '2 , and 2048 cell 6 , is 150 square km right? making it almost double in size i think.. but 2048 with cell 6 = 12.2 x 12.2 km which is roughly the same size as the island.... which is confusing to me, can you elaborate 

 

e3192755a9c30797b1b94b48c480acbd.png

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