Mean Blur | 555Tools — Online Tools for FPGA & Algorithm Engineers

Image AlgorithmsTool Introduction

Mean blur replaces each pixel with the average of its K×K neighborhood — the most basic linear smoothing filter. Exploits separability into two 1D passes (row then column). FPGA implementation approximates division by N² with shift-right to avoid hardware dividers.

Key Formula / Principle

I_out(x,y) = (1/K²) × Σ I(x+dx, y+dy)
3×3: sum >> 3 (÷8 ≈ ÷9)
5×5: sum >> 4 (÷16 ≈ ÷25)

Data Processed Locally|All computations run in your browser. Images, formulas, state machine definitions, and any other input data are never sent to any server.

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