[−][src]Macro imageproc::rgb_image
Helper for defining RGB images.
Pixels are delineated by square brackets, columns are
separated by commas and rows are separated by semi-colons.
By default a subpixel type of u8
is used but this can be
overridden, as shown in the examples.
Examples
use image::{ImageBuffer, Rgb, RgbImage}; // An empty image with pixel type Rgb<u8> let empty = rgb_image!(); assert_pixels_eq!( empty, RgbImage::from_raw(0, 0, vec![]).unwrap() ); // A single pixel image with pixel type Rgb<u8> let single_pixel = rgb_image!([1, 2, 3]); assert_pixels_eq!( single_pixel, RgbImage::from_raw(1, 1, vec![1, 2, 3]).unwrap() ); // A single row image with pixel type Rgb<u8> let single_row = rgb_image!([1, 2, 3], [4, 5, 6]); assert_pixels_eq!( single_row, RgbImage::from_raw(2, 1, vec![1, 2, 3, 4, 5, 6]).unwrap() ); // An image with 2 rows and 2 columns let image = rgb_image!( [1, 2, 3], [ 4, 5, 6]; [7, 8, 9], [10, 11, 12]); let equivalent = RgbImage::from_raw(2, 2, vec![ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 ]).unwrap(); assert_pixels_eq!(image, equivalent); // An empty image with pixel type Rgb<i16>. let empty_i16 = rgb_image!(type: i16); // An image with 2 rows, 3 columns and pixel type Rgb<i16> let image_i16 = rgb_image!(type: i16, [1, 2, 3], [4, 5, 6]; [7, 8, 9], [10, 11, 12]); let expected_i16 = ImageBuffer::<Rgb<i16>, Vec<i16>>::from_raw(2, 2, vec![ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], ).unwrap();