[−][src]Function imageproc::morphology::open
pub fn open(image: &GrayImage, norm: Norm, k: u8) -> GrayImage
Erosion followed by dilation.
See the erode
and dilate
documentation for definitions of dilation and erosion.
Examples
use imageproc::morphology::open; use imageproc::distance_transform::Norm; // Isolated regions of foreground pixels are removed. let cross = gray_image!( 0, 0, 0, 0, 0; 0, 0, 255, 0, 0; 0, 255, 255, 255, 0; 0, 0, 255, 0, 0; 0, 0, 0, 0, 0 ); let opened_cross = gray_image!( 0, 0, 0, 0, 0; 0, 0, 0, 0, 0; 0, 0, 0, 0, 0; 0, 0, 0, 0, 0; 0, 0, 0, 0, 0 ); assert_pixels_eq!( open(&cross, Norm::LInf, 1), opened_cross ); // Large blocks survive unchanged. let blob = gray_image!( 0, 0, 0, 0, 0; 0, 255, 255, 255, 0; 0, 255, 255, 255, 0; 0, 255, 255, 255, 0; 0, 0, 0, 0, 0 ); assert_pixels_eq!( open(&blob, Norm::LInf, 1), blob );