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Design Tool suggestion - INF file source auto-number

Bungo

Bungo

Messages
115
Country
australia
G'Day all,

I have a PR with 193 sources (for just one season), and as I add more it will get much bigger. This leaves me with the tedious task of renumbering the [SourceXXX] sections as I do more work. Can we get a tool to generate or renumber an existing file these numbers automatically and maybe even keep track of the mask channels and the like as it does so...

Cheers

Braedon
 
Hi,

What kind of input files do you use? Are these GeoTIFF? I'm planning to add support for photo scenery generation to scenProc.
 
I export about 220 10000x10000 pixel Geotiffs out of Global Mapper and then get rid of all the ones around the edges with nothing on them (ie are all NULL values). I get them right before adding the blend masks (usually) around the outside, discarding all the ones in the middle that are all no blend. Thus having a tool that can keep track of which Mask/water/season tiles are associated with each other would be good.
The starting point for anything georeferenced is an 80GB LZW compressed GeoTIFF (per season) in the local UTM projection (in this case GDA94/MGA55) that I then batch convert into WGS84/Lat Long uncompressed GeoTIFF tiles of about 10000x10000 (depending on how efficient I can be with the NULL around parts of the edges and not create too many tiles to work with). My current project produces just about 220 tiles from this for the one season.

EDIT: It would save some time to be able to make a merged BigTIFF (not georeferenced) out of a photoshop PSD or preferably PSB, as Photoshop CC 2014 won't do that and it forces me to chop up the image, georeference the sections, and piece it back together again. So as not to lose some resolution with resampling pixels about 4 times, I usually double the resolution at one point so as I can downsample at the conversion to WGS84 export. My working document is a 150000x110000 PSB file that brings PS CC 2014 to its knees even with 32GB RAM.

cheers

Braedon

Greater-Hobart-Area-PS.jpg
 
Last edited:
You can use GDAL Merge to combine your tiles instead of PS. Be aware that Resample doesn't understand the BigTiff format and that it will not except any individual input file larger than 2GB.
 
G'Day Ed,

I don't use PS to combine the tiles, I use Global Mapper to do the grunt work there as the Georeferencing is done and that's what can put them back together. If I could keep it as a whole single file exported out of photoshop PSB into TIFF format I could put 10 reference points on 1 image and georeference it instead of 10 reference points each on 9 images to get it back together again. The PS stage is just for colouring and getting all the non-georeference tiles I have as source (over 3000 so far) stitched together. LISTMap Tasmania has lots of imagery available as Creative Commons Licence, but want AU$49 per frame to get it electronically. Thus I've been making screenshots of their web portal and hand stitching them together. Then colouring/masking/etc... then export to be georeferenced and then resampled to scenery. There in comes the issue of renumbering the sources if you make any changes or add seasons, etc as you go. It takes about 4 days for me to get a test export together (with family and work commitments thrown in).

I just use the bigtiff format to remove a resampling/georeferencing step and get global mapper to break the image into resample compatable TIFF file sizes at the pixel resolution I specify, and convert it to WGS84 at the same time. If you don't start with a single image to split up when tiling and reprojecting then you wind up with gaps at the edge of each tile. as the WGS84 tiles are trapesoidal when exported from a square UTM tile, esp at the more southerly latitudes.

cheers

Braedon
 
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