CODEWITHSUNDEEP
imagecolorsdicomgrayscale
Garry Pettet
Garry Pettet

Reputation: 8288

How can I calculate the RGB value of a grey colour?

I am writing some code to create an image from pixel data stored in a medical image file (DICOM). Essentially, I have a two dimensional array (rows x columns) where each element of the array contains the colour of the pixel at that region in the image. The element values vary between 0 (black) and 1 (white). Values between 0-1 are differing shades of grey.

The language I am using (Xojo) allows me to set the colour of an individual pixel on a canvas but only using the RGB or HSV colour space.

How would I, for instance, get the HSV value for my pixel value of 0.9 (which would be a reasonably "light" shade of grey)?

Upvotes: 1

Views: 278

Answers (1)

EldoRado
EldoRado

Reputation: 21

Use the HSV color value of

  • H = 0
  • S = 0
  • V = your pixel value of 0.9

g.FillColor=HSV(0.0, 0.0, 0.9) From Xojo Documentation

See the Image [email protected] in the top right corner.

Upvotes: 2

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