Enumeration FilterType

@interface EnumFilterType {
   // High-pass filter: Enhances edges and fine details by attenuating low-frequency components.
   int FT_HIGH_PASS = 0;
   // Sharpen filter: Increases contrast along edges to make the image appear more defined.
   int FT_SHARPEN = 1;
   // Smooth (blur) filter: Reduces noise and detail by averaging pixel values, creating a softening effect.
   int FT_SMOOTH = 2;
}