Image Recognition Device Mark Distance and Mirror-Image Discrimination

The patent applies asymmetry by introducing directional vector relationships between marks. Instead of using symmetric distance measurements alone, the system calculates vectors from each mark to its corresponding mark in the specific mark pattern, then determines whether these vectors are parallel and point in the same direction. This asymmetric directional comparison eliminates mirror-image false positives while maintaining computational efficiency.

The patent transitions from one-dimensional distance comparison to two-dimensional vector comparison. By adding the directional component (angle and orientation) to the distance measurement, the system gains an additional dimension of discrimination that effectively distinguishes between correct matches and mirror-image relationships without significantly increasing computational complexity.

The patent performs preliminary action by pre-calculating and storing the positional relationships and vector directions of marks in the specific mark pattern during an initialization phase. During actual recognition, the system only needs to compare pre-computed vector characteristics rather than performing complex real-time calculations, significantly reducing processing time while maintaining high accuracy.

The patent substitutes complex geometric calculations involving center points and mirror-image checks with simpler vector parallelism and directionality comparisons. By replacing mechanical geometric reasoning with algebraic vector operations, the system achieves both improved accuracy and reduced computational complexity.