convert picture to grayscale

[labuda]

Hi,

I have made this program... and i can't seem to make the image grayscale. I thought the using the 8-bit output would do it, but it doesn't.

anyone know how to make my picture grayscale?

Thanks

aleks.

[altenbach]

You can take the 24bit image and average the RBG components for each pixel. If you want 8bit, you need to create a greyscale color table (R=G=B).

[labuda]

I tried doing that, but the 8bit output on the unflatten pixmap VI is already just a 2D array of numbers, and that's the signal that i'm using.

(I deleted the 4-bit and 24-bit pixmap outputs in my original program and everything works)

Attached is a sample image that im working with.

Anythought?

[altenbach]

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@labuda wrote:
I tried doing that, but the 8bit output on the unflatten pixmap VI is already just a 2D array of numbers, and that's the signal that i'm using.

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For an 8bit paletted image, each array element is just an index into a color table, which you have wired seperately. You simply need to convert the color table to gryscale by averaging the RGB components of the 256 colors before further processing.