Synchronized Light Source Detection for Image Sensors
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Solution Overview
Problem
Existing image sensing methods face challenges in accurately detecting the location of a light source due to interference from unwanted image components from environment lights or display images, which increases complexity and reduces accuracy.
Innovation Solution
An image detecting method that synchronizes the light source and image sensor operations by using a synchronizing controller to transmit activating signals, controlling light sources to generate predetermined radiating patterns, and having them respond to initiate image detection, allowing the image sensor to start detecting only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the image sensor continuously detects images to capture light source location, then the light source location can be detected, but image components from other light sources (environment light, display images) increase complexity and reduce detection accuracy
Solution Approach 1:
The synchronizing controller sends an activating signal to the light source controller before the image sensor performs detection. The light source controller pre-controls the light source to generate a predetermined radiating pattern, ensuring the light source is ready and isolated when detection occurs, thereby reducing interference from other light sources
Solution Approach 2:
The system uses periodic activating signals to control the light source to emit light in specific time intervals according to a predetermined radiating pattern. The image sensor detects images only during these periodic intervals, creating synchronized periodic detection that isolates the light source signal from continuous environmental interference
2Measurement precision
If the image sensor continuously operates to detect light source location, then detection can be performed, but power consumption increases
Solution Approach 1:
The image sensor operates periodically based on receiving responding signals from the light source controller, rather than continuously. This periodic operation synchronized with the light source activation intervals reduces power consumption while maintaining detection capability
Solution Approach 2:
The light source controller transmits responding signals back to the synchronizing controller to confirm light generation status. The synchronizing controller uses this feedback to control the image sensor's operation timing, ensuring the sensor activates only when the light source is ready to emit, optimizing power usage
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the accuracy of light source detection, discards incorrect images, and optimizes power consumption by activating components only when needed.
Implementation Method 1
controlling the light source controller to control at least one light source to generate a predetermined radiating pattern
Implementation Method 2
the image sensor catches a image and computes a location of the light source's object image in the image
Data Source
AI summary
An image detecting method, comprising: controlling a synchronizing controller to transmit a first activating signal to a light source controller; controlling the light source controller to control at least one light source to generate a predetermined radiating pattern, and controlling the light source controller to transmit back a first responding signal to the synchronizing controller when the light source controller receives the first activating signal; and controlling an image sensor to start an image detecting when the synchronizing controller receives the first responding signal.