CODEWITHSUNDEEP
image-processingjulia
Mathomo
Mathomo

Reputation: 13

How to change an individual pixel of an RGBA image?

In the below code I was trying to make the red component of the first pixel to be zero.

julia> image1 = load("background1.png");

julia> x = image1[1].r
0.776N0f8

julia> image1[1].r = 0
ERROR: type RGBA is immutable

Turns out the RGBA type in Julia is immutable. Is there a way I could change the individual pixels (R, G & B components) of an image?

Upvotes: 1

Views: 424

Answers (1)

Chris Rackauckas
Chris Rackauckas

Reputation: 19162

Just make a new RGB. It's cheap to do:

image1 = load("background1.png")
x = image1[1]
image1[1] = RGB(0,x.g,x.b)

Upvotes: 5

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