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DLP6500FLQ: 0x00 value in BMP file

Hiroyasu Tazawa1
Guru 12350 points
Part Number: DLP6500FLQ

Hi,
Let me talk about DLP6500.

My cusotmer make BMP file.
and set up Black area'are 0x00 and white area are 0xff.
In this case, When projected with LED, 0x00 area looks gray.
but if this value change 0x02, it looks black.

Is 0x00 special code ?
Could you give me some advice ??

I have this BMP file, but I can not post this in public E2E.

Best Regards
Hiroyasu

  • 0
    TI__Guru 54705 points
    Hello Hiroyasu-san,

    Is the BMP file a 24 bit color file or an 8 bit grayscale file? It may depend on the encoding in the BMP file. Getting the file to us would be helpful. You can send me a private message.

    Fizix
  • 0 in reply to Fizix
    TI__Guru 54705 points
    Hiroyasu-san,

    Thank you for the images. The issue is that BMP can be inconsistent with whether a program interprets an 8-bit BMP as an 8-bit color file or an 8-bit true grayscale file. If you assume that it is a true 8-bit grayscale but gets interpreted as an 8-bit color file you will get inconsistent results.

    We suggest using 8-bit grayscale PNG which seems to be more consistent in interpreting an 8-bet grayscale vs 8-bit color image.

    You will likely have to rebuild the images directly into the PNG files.

    Fizix
  • 0 in reply to Fizix
    Guru 12350 points

    Fizix-san

    Thank you for your reply !
    I got it.

    Best Regards
    Hiroyasu