Projection Method and Projection System for Augmented Reality Applications

Smart overview of the Invention

A novel projection method and system designed for augmented reality applications are introduced. The method involves creating a projection map of an environmental space using displacement vectors and deflection angles from a projector. A distance sensor is employed to identify feature position points in the space, allowing for updates to the projection map and generating a projection feature map. Calibration of the projection surface compensates for any distortions, enhancing the accuracy and quality of projected images.

Background

With advancements in technology, augmented reality (AR) has become increasingly popular across various applications, including video games and interactive displays. Traditional projectors are limited by their fixed position, often requiring multiple projectors for wide-area displays. Miniaturization has led to portable projectors that can be integrated into wearable or handheld devices, allowing for greater interaction with users. These devices can project virtual AR objects based on environmental and user perspective data, presenting new challenges in detecting environmental features.

System Components

The projection system comprises a projector and a projection surface. The projector includes a distance sensor for detecting focal lengths, a memory unit for data storage, and a processor connected to both components. The processor constructs a projection map using displacement vectors and deflection angles obtained by the distance sensor. It updates this map to form a projection feature map based on detected feature position points. This system can also include an accelerometer to sense three-dimensional deflection angles, enhancing its capability to adapt to various environments.

Functionality

The system's processor establishes the initial coordinates of the projector in the environmental space. As the projector moves, it records changes in position and recalibrates the projection map accordingly. Whether moving horizontally or arbitrarily within the space, the projector maintains consistent focal lengths to ensure image clarity. The accelerometer aids in capturing three-dimensional movement data, allowing the system to adjust projections dynamically based on real-time environmental changes.

Application and Benefits

The proposed method allows for seamless integration of AR objects into real-world environments by accurately adjusting projections based on movement and spatial features. This flexibility makes it suitable for applications requiring dynamic image placement, such as interactive museum exhibits or immersive gaming experiences. By compensating for distortions and adapting to user movements, the system enhances user interaction with augmented reality content, providing a more immersive experience.