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.
input is the input imagethreshold_type helps determine if user set high threshold is to be used or not. It can take values defined by the enum CannyThresholdTypelow is the lower threshold % of the maximum or auto-derived highhigh 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.An Array of binary type DType::B8 indicating edges(All pixels with non-zero values are edges).
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