# Mathematical Reference Table

| Algorithm | Formula / Mask | Source |
| :--- | :--- | :--- |
| **Power-Law** | $s = c \cdot r^\gamma$ | [4] |
| **Histogram Eq** | $s_k = \sum_{j=0}^{k} n_j / n$ | [17] |
| **Laplacian Mask** | `[0 -1 0; -1 4 -1; 0 -1 0]` | [20, 21] |
| **Sobel (Gx)** | `[-1 -2 -1; 0 0 0; 1 2 1]` | [23, 24] |
| **Gaussian Blur** | $H(u,v) = e^{-D^2(u,v)/2\sigma^2}$ | [28] |
| **RGB to CMY** | `[C M Y] =  - [R G B]` | [29] |
| **Image Averaging**| $\bar{g}(x,y) = \frac{1}{K} \sum_{i=1}^{K} g_i(x,y)$ | [25, 26, 30] |