Affine Transform | 555Tools — Online Tools for FPGA & Algorithm Engineers

Image AlgorithmsTool Introduction

Affine Transform uses a 2x3 matrix to describe the linear combination of rotation, scaling, shearing and translation; parallel lines stay parallel after the transform. Each output pixel is computed by inverse-mapping to the source coordinate with bilinear interpolation. Supports presets (rotate 30 / shear / scale) and automatic 3-point matrix solving.

Key Formula / Principle

Forward: [x';y'] = A·[x;y] + t (2x3 matrix)
Inverse mapping: (sx,sy) = A⁻¹·(x,y)
Bilinear interpolation over source neighbourhood

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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