Monocular Gaze Detection for Secure Ad Engagement Tracking
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Solution Overview
Problem
Existing advertisement engagement metrics systems, such as stereoscopic cameras, are bulky, expensive, consume significant power, require complex computational resources, and pose data security risks due to remote data processing.
Innovation Solution
A system utilizing a monocular image sensor with integrated modules for face detection, gender identification, angle estimation, and gaze recognition, including a detection module, depth estimator, height estimator, and computing module, to detect gaze at an object efficiently and securely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If stereoscopic cameras are used to detect advertisement engagement, then gaze detection capability is achieved, but device complexity and cost increase significantly
Solution Approach 1:
The patent extracts and eliminates the unnecessary stereoscopic (3D) depth perception capability from the camera system, retaining only the essential 2D image capture function needed for gaze detection. This simplification removes the complexity of multiple viewpoints and depth processing while maintaining the core functionality of detecting whether a person is looking at the advertisement.
Solution Approach 2:
The patent uses a standard 2D monocular camera that replicates the essential function of stereoscopic cameras for gaze detection purposes. Instead of requiring true 3D depth information, the system creates a simplified computational model that processes 2D images to infer gaze direction and engagement, achieving the same practical outcome with reduced complexity.
2Measurement precision
If stereoscopic cameras are used for gaze detection, then accurate depth information is obtained, but power consumption increases
Solution Approach 1:
The patent removes the power-intensive depth sensing hardware and processing requirements of stereoscopic cameras. By using standard 2D image processing algorithms instead of complex 3D reconstruction, the system achieves sufficient depth and gaze information with significantly lower computational load and power consumption.
3Adaptability or versatility
If multiple viewpoints are used in stereoscopic cameras, then three-dimensional perception is achieved, but placement and orientation become difficult
Solution Approach 1:
The patent eliminates the requirement for multiple camera viewpoints and complex spatial alignment. A single monocular camera can be placed and oriented freely without the stringent calibration requirements of stereoscopic systems, greatly simplifying installation and operation while still enabling effective gaze detection through 2D image analysis.
4Power
If data is processed in remote servers, then computational power is sufficient, but data security risks increase
Solution Approach 1:
The patent enables the device itself to perform the necessary computational processing locally using modern mobile device capabilities. Instead of transmitting raw video data to remote servers, the system processes images on-device to detect gaze and generate engagement metrics, eliminating data transmission security risks while requiring minimal computational resources.
Data Source
AI summary
A system to detect a gaze at an object by utilizing an image sensor is disclosed. The system includes a processing subsystem including a detection module to detect at least one face of a person. The detection module is to identify a gender of the person. The processing subsystem includes a depth estimator module to estimate a distance of the person from the image sensor. The processing subsystem includes a height estimator module to estimate a height of the person. The processing subsystem also includes a horizontal position estimator module to estimate a relative position of the person with respect to the image sensor. The processing subsystem includes a computing module to compute a range of pitch angle and a range of yaw angle. The processing subsystem includes a recognizing module to recognize the gaze of the person.