## 4. Enhance Filters

### 4.1. Introduction

Enhance filters compensate for image imperfections. Such imperfections include dust particles, noise, interlaced frames (coming usually from a TV frame-grabber) and insufficient sharpness.

This category describes the following filters:

- Section 4.2, “Antialias”

- Section 4.3, “Deinterlace”

- Section 4.4, “High Pass”

- Section 4.5, “Noise Reduction”

- Section 4.6, “Red Eye Removal”

- Section 4.7, “Symmetric Nearest Neighbor”

- Section 4.8, “Sharpen (Unsharp Mask)”

- Section 4.9, “Despeckle”

- Section 4.10, “NL Filter”

- Section 4.11, “Wavelet Decompose”

3.13. Tileable Blur |  | 4.2. Antialias

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