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| 06:36 | Bertl | morning folks!
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| 08:07 | parimal | In task T872, "Output the intensity values of the first 5x5 pixels (square tile) R, G, G, B channels", what format should the output be? Hexadecimal or decimal?
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| 08:08 | Bertl | I'd prefer hexadecimal
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| 08:09 | parimal | Ok
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| 09:38 | parimal_ | May I compare the intensity values with someone to see if I am going in the right direction?
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| 09:56 | se6astian | parimal_: you can create a kind of preview image then it should be easy to tell
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| 10:55 | parimal | okay
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| 13:00 | parimal | In ppm file format, should the image data be in decimal or hexadecimal? On wikipedia it is given in decimal
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| 13:09 | BAndiT1983 | parimal, file specification explains what has to be used, please check one to see how the format is structured, not only wiki
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| 13:09 | BAndiT1983 | http://netpbm.sourceforge.net/doc/ppm.html
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| 13:09 | BAndiT1983 | there it is explained clearly
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| 13:10 | BAndiT1983 | also here it tells which format to use -> davis.lbl.gov/Manuals/NETPBM/doc/ppm.html
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| 13:11 | parimal_ | thanks a lot :)
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| 13:11 | BAndiT1983 | thank not me, thank google
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| 13:13 | parimal_ | Yeah sorry should have researhed properly before pinging here
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| 13:14 | BAndiT1983 | don't rely too much on wiki, official (sometimes reverse-engineered) file specifications are more important
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| 13:15 | parimal_ | alright will keep that in mind
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| 16:18 | parimal_ | Ok, I converted the 4 channels to a "plain" ppm image, using decimal values for every pixel, and I am getting the correct image
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| 16:18 | parimal_ | but using the "raw" ppm format, i.e using binary instead of decimal, i am getting a greyish image
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| 16:22 | parimal_ | Can someone explain why this is happening? Or am I missing something?
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| 16:23 | Bertl_oO | you are probably missing something :)
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| 16:33 | parimal_ | If the first red pixel value is 8, in the raw ppm file, this would translate to 1000 0 0 in the red ppm image data, right? Since blue and green are 0 each and 8 is 1000 in binary
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| 16:38 | parimal_ | Here is the plain ppm file I am getting for red channel - https://pasteboard.co/I2dxNg3.png
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| 16:38 | parimal_ | And this is the raw ppm image, using decimal values as stated - https://pasteboard.co/I2dy5q1.png
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| 16:39 | parimal_ | binary* not decimal ^
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| 20:13 | Bertl_oO | off to bed now ... have a good one everyone!
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