![]() I realize it might take some inital time to familarize yourself with these tools, but they may be helpful down the road. RGB mode images are made of three color channels. Grayscale mode images with a bit depth of 8 have 256 possible gray values. An image with a bit depth of 8 has 2 8, or 256, possible values. All you have to do is fire up nearly any version of Photoshop and download a few files to make the process quick and easy. ![]() The output may be specified to a particular folder as \\servername\outputRas\%Name% An image with a bit depth of 1 has pixels with two possible values: black and white. While making any image into an 8-Bit style graphic can be a lot of fun, it's surprisingly easy to go the extra mile and use authentic palettes of popular retro gaming systems like the Gameboy, NES, or Sega Master system. Use the Raster Layer as input into the Copy Raster tool. Then I set the band combination in the Make Raster layer tool (Type in the band numbers in the "Bands" parameter and select the + button to add). Iterate Raster is inserted into the model to loop through a workspace and perform a function on each raster within the workspace. This required the use of three tools Iterate Raster, Make Raster layer, and Copy Raster. This raster was saved as an 8 bit unsigned integer. I just tested this real quick on some local data I have that is an 8 band raster and was able to specify an output raster as 3 band with combo of 1,3,4. Below is a print screen of a set of tools linked in model builder that will iterate, create a raster layer with your specified band combo and then copy the layer as a 3 band raster. There is a quick way to do a similar procedure batch style with model builder. I'm sure there is a way to do this using ArcObjects. The script sample is available in the Copy Raster help document for 9.3 at (Data%. With version 10, the Copy Raster tool may also be batched in python using arcpy.ListRasters. This option is not available in a geoprocessing tool, but the option to change the raster�?s pixel depth is available through the Data Management > Copy Raster tool.Ĭopy Raster ArcGIS Resource center help doc:Ĭopy Raster can be batched by right clicking on the tool and selecting �?Batch�?� or in model builder by inserting the Iterate Rasters tool. So, it is useful if you would like to set a particular stretch and have the exported raster display as this stretch by default. You will have to manually change one of the colors. Sometimes the Auto Generate won’t give the colors you want. ![]() Above is the image converted and dithered in gray. You can also convert to grayscale first (press the grayscale button). The "use render" option will save the current raster renderer settings to an exported raster dataset. And below is Bayer 8×8 positioned dithering.
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