Gaze-Based Target Selection Using Intermediary Filtering

The patent introduces an intermediary selection mechanism between line-of-sight detection and target selection. Instead of directly selecting the target under the gaze point, the system presents multiple candidate targets and uses additional input (such as head direction, voice command, or confirmation action) to resolve the final selection. This intermediary step filters out false selections caused by line-of-sight instability while maintaining hands-free operation capability.

The patent applies partial action by not relying solely on line-of-sight detection for complete target selection. Instead, it uses line of sight to narrow down candidate targets (partial selection) and then requires additional input modalities (head direction, voice, or confirmation) to finalize the selection. This partial use of line-of-sight information maintains user input flexibility while compensating for its reliability shortcomings through multi-modal verification.