将 RgbImage 转换为 Vec<[u8; 3]>

Question

I have an RgbImage but for the gaussian blur algorithm I need to convert it to Vec<[u8; 3]> Vec<[u8; 3]> . I managed to do this before using:

let img: Vec<u8> = img.into_raw();
let mut new: Vec<[u8; 3]> = vec![];
for (r, g, b) in img.into_iter().tuples() {
    new.push([r, g, b]);
}

But in my new project for some reason I get the error no method named tuples found for struct std::vec::IntoIter in the current scope . I'm not sure why this is happening but I think there is a much better way to do it anyway.

Answer 1

You need to add the crate itertools for tuples() .

Or you can use std's chunks_exact() :

for color in img.chunks_exact(3) {
    new.push(color.try_into().unwrap());
}