VR Region-of-Interest Interaction for Precise Small-Object Selection

The patent combines multiple input modes (head movement, eye movement, and hand gesture) into a unified interaction system. The head control module detects head movement to determine region of interest, the eye tracking module detects eye movement to identify target objects within that region, and the hand gesture module provides confirmation or refinement. This merging of multiple sensing modalities resolves the contradiction by maintaining system functionality while significantly improving object selection accuracy through multi-modal verification.

The interaction process is segmented into distinct stages, each handled by a specialized module: head movement detection for coarse positioning of region of interest, eye tracking for fine targeting within that region, and hand gesture for final confirmation. This segmentation allows each module to operate independently with optimized controls, maintaining ease of operation while achieving high precision through the cumulative effect of multiple specialized sensing stages.

The patent introduces head movement and eye tracking as intermediary control mechanisms that reduce the burden on hand muscles during prolonged interactions. Instead of continuously moving hands or maintaining fixed hand positions, users can adjust the region of interest through head movement and select objects through eye tracking, with hand gestures used only for confirmation. This intermediary approach distributes the interaction workload across different muscle groups, reducing fatigue in the hands and arms during extended use.