How would I detect gray/white pixels in a picture?

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I am trying to write a function to detect white-like and gray-like pixels in a given colored picture. I am stuck on how to go about it. Any help is appreciated.

Risposta accettata

Walter Roberson
Walter Roberson il 9 Ago 2022
Convert for HSV, check for "high" V (near 1) and "small" (near 0) S. You will need to decide on the exact boundaries, depending how "white like" or "gray like" you want to allow.

Più risposte (1)

KSSV
KSSV il 8 Ago 2022
REad about find. Gve the pixle value as zero and use find. This will give you the indices.
[y,x] = find(I==0) ; % I is gray image
  1 Commento
Ali Almakhmari
Ali Almakhmari il 8 Ago 2022
But that would require me to manually identifiy the gray pixels and assign them to zero. Which is the thing I am trying to automate with this function.

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R2020b

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