[RUST/IMAGE] DynamicImage 열거형 : get_pixel/put_pixel 메소드를 사용해 색상 반전 이미지 파일 생성하기

■ DynamicImage 열거형의 get_pixel/put_pixel 메소드를 사용해 색상 반전 이미지 파일을 생성하는 방법을 보여준다.

▶ Cargo.toml


[package]
name = "test_project"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
image = "0.23.14"

[package]

name = "test_project"

version = "0.1.0"

edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]

image = "0.23.14"

▶ src/main.rs


use image::GenericImage;
use image::GenericImageView;
use image::Rgba;

fn main()
{
    let argument_vector : Vec<String> = std::env::args().collect();

    if argument_vector.len() < 2
    {
        println!("[USAGE] test_project imagefile");

        return;
    }

    let source_file_path : String = argument_vector[1].clone();

    let file_path_element_vector : Vec<&str> = source_file_path.split(".").collect();

    let target_file_path : String = format!("{}_inversed.jpg", file_path_element_vector[0]);

    println!("Source File Path : {}", source_file_path);
    println!("Target File Path : {}", target_file_path);

    let mut source_dynamic_image : image::DynamicImage = image::open(source_file_path).expect("파일 로드시 에러가 발생합니다.");

    let (image_width, image_height) = source_dynamic_image.dimensions();

    for y in 0..image_height
    {
        for x in 0..image_width
        {
            let source_rgba : Rgba<u8> = source_dynamic_image.get_pixel(x, y);

            let target_rgba : Rgba<u8> = Rgba([255 - source_rgba[0], 255 - source_rgba[1], 255 - source_rgba[2], source_rgba[3]]);

            source_dynamic_image.put_pixel(x, y, target_rgba);
        }
    }

    source_dynamic_image.save(target_file_path).unwrap();
}

use image::GenericImage;

use image::GenericImageView;

use image::Rgba;

fn main()

{

let argument_vector : Vec<String> = std::env::args().collect();

if argument_vector.len() < 2

{

println!("[USAGE] test_project imagefile");

return;

}

let source_file_path : String = argument_vector[1].clone();

let file_path_element_vector : Vec<&str> = source_file_path.split(".").collect();

let target_file_path : String = format!("{}_inversed.jpg", file_path_element_vector[0]);

println!("Source File Path : {}", source_file_path);

println!("Target File Path : {}", target_file_path);

let mut source_dynamic_image : image::DynamicImage = image::open(source_file_path).expect("파일 로드시 에러가 발생합니다.");

let (image_width, image_height) = source_dynamic_image.dimensions();

for y in 0..image_height

{

for x in 0..image_width

{

let source_rgba : Rgba<u8> = source_dynamic_image.get_pixel(x, y);

let target_rgba : Rgba<u8> = Rgba([255 - source_rgba[0], 255 - source_rgba[1], 255 - source_rgba[2], source_rgba[3]]);

source_dynamic_image.put_pixel(x, y, target_rgba);

}

source_dynamic_image.save(target_file_path).unwrap();

}

test_project.zip