Opening | 555Tools — Online Tools for FPGA & Algorithm Engineers

Image AlgorithmsTool Introduction

Opening = erosion then dilation. Isolated white pixels are removed by erosion and not restored by dilation, while large shapes are preserved. FPGA implementation cascades erosion module output into dilation module input with px_valid passthrough.

Key Formula / Principle

Opening(I) = Dilation(Erosion(I))
Cascade delay = 2x(2*IMG_W + 1) cycles
Removes isolated noise, preserves shape

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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