[src] Function arrayfire::canny

pub fn canny<T>(
  input: &Array<T>, 
  threshold_type: CannyThresholdType, 
  low: f32, 
  high: f32, 
  sobel_window: u32, 
  is_fast: bool 
) -> Array<bool> where
  T: HasAfEnum + EdgeComputable, 

Canny edge detection operator

The Canny edge detector is an edge detection operator that uses a multi-stage algorithm to detect a wide range of edges in images. A more in depth discussion on it can be found here.

Parameters

• input is the input image
• threshold_type helps determine if user set high threshold is to be used or not. It can take values defined by the enum CannyThresholdType
• low is the lower threshold % of the maximum or auto-derived high
• high is the higher threshold % of maximum value in gradient image used in hysteresis procedure. This value is ignored if CannyThresholdType::OTSU is chosen.
• sobel_window is the window size of sobel kernel for computing gradient direction and magnitude.
• is_fast indicates if L₁ norm(faster but less accurate) is used to compute image gradient magnitude instead of L₂ norm.

Return Values

An Array of binary type DType::B8 indicating edges(All pixels with non-zero values are edges).