Document Image Ruby Alignment via Character-Specific Y-Coordinate Adjustment

The patent applies local quality by differentiating the treatment of Y coordinates based on the specific characters present in each wording. Instead of using a uniform Y coordinate for all words in a line, the system calculates separate Y coordinates for each wording based on the vertical positions of its constituent characters. This allows each local region (wording) to have its own optimized alignment characteristics, resolving the contradiction between simple processing and precise alignment.

The patent changes the parameter of Y coordinate from a fixed uniform value to a dynamic calculated value based on character shapes. By introducing a database of vertical positions for each character type and calculating the mean Y coordinate for each wording, the system transforms the static parameter into a dynamic one that adapts to the specific composition of each wording, thereby achieving proper alignment without overly complex processing.

The patent applies preliminary action by pre-storing the vertical position information for each character type in a database before the actual ruby addition process. This preprocessing step creates a reference framework that simplifies the subsequent calculation of Y coordinates for each wording. By preparing the character position data in advance, the system reduces the complexity of real-time processing while maintaining high alignment precision.

The system achieves self-service by automatically calculating the Y coordinates for each wording based on its own constituent characters' vertical positions. Rather than requiring manual specification or complex external control, the system uses the character composition information itself to determine the appropriate alignment position, making the process self-determining and reducing overall system complexity.