📐 Simulator EP03_07: Laplacian Operator (w4)
g = f ∓ ∇²f
Select the enhancement variant and hover over the inner pixels of the result to inspect the 4-point neighborhood and the Laplacian equation.
Variant:
① Original Image f
Step with light noise
② Laplacian ∇²f
Detected edges (±128 shift)
③ Result g = f − ∇²f
Hover to inspect
Kernel w4 (4-Neighbor)
∇²f = T + B + L + R − 4·f
0
+1
0
+1
−4
+1
0
+1
0
Legend:
Kernel 4-Neighbors
Central Pixel
Border (Copied)
Hover over an inner pixel of the result to detail the equation.
Description: Figure 3.32: Simulator EP03_07: Laplacian Operator (w4) for Edge Enhancement