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Read MRSID without Alpha Band (Color Infrared)

  • November 25, 2020
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hlouie
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In the past I've received 2 file MRSID files, 1 RGB and 1 Color Infrared, this time got a 1 MRSID file with all 4 Bands. I can RasterSelector then RasterBandRemover and get the RGB, this takes a little longer as I need to pass it thru transformer.

 

Question

Can I read a MRSID and only select the RGB Bands and not read the Color Infrared (Apha) as if I don't need it why read it (would this speed up the Workspace processing)?

 

MRSID_01MRSID_02

Best answer by jdh

I would suggest instead that you use the RasterSelector for bands 0;1;2 and a RasterBandKeeper. That way the workspace won't fail if you send it a 3 band image, or a mix of 3 and 4 band images.

 

As long as feature caching is not enabled, this should have minimal impact on your workspace performance.

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jdh
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  • November 26, 2020

I would suggest instead that you use the RasterSelector for bands 0;1;2 and a RasterBandKeeper. That way the workspace won't fail if you send it a 3 band image, or a mix of 3 and 4 band images.

 

As long as feature caching is not enabled, this should have minimal impact on your workspace performance.


hlouie
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  • November 26, 2020
jdh wrote:

I would suggest instead that you use the RasterSelector for bands 0;1;2 and a RasterBandKeeper. That way the workspace won't fail if you send it a 3 band image, or a mix of 3 and 4 band images.

 

As long as feature caching is not enabled, this should have minimal impact on your workspace performance.

Thank-you, instantly runs faster


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