Image Sensor Single and Multiple Exposure Motion Tracking
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Solution Overview
Problem
Existing image generation techniques using serial imaging by multiple exposures fail to accurately recognize the travel direction of objects due to decreased sensitivity, making it difficult to identify the object itself in images captured with reduced sensitivity.
Innovation Solution
An image generating apparatus that includes a receiver circuit for processing single and multiple exposure frames from an image sensor, and a control circuit that specifies the starting point of an object's motion track by correlating positions in both frames, ensuring consistent sensitivity and accurate object recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensitivity is gradually decreased in each timing of multiple exposures to recognize travel direction, then travel direction recognition is improved, but object recognition becomes difficult
Solution Approach 1:
The patent divides the imaging task into two separate modes: single exposure imaging for capturing high-sensitivity object images, and multiple exposure imaging for capturing motion tracks. This segmentation allows each mode to optimize for its specific purpose without compromising the other, resolving the contradiction between object recognition and travel direction recognition.
Solution Approach 2:
The system performs preliminary object detection in the single exposure frame before processing multiple exposure frames for motion track analysis. By identifying the object position in advance using high-sensitivity single exposure imaging, the system can then focus multiple exposure resources on tracking motion without needing to rely on decreased sensitivity imaging for initial object detection.
2Loss of information
If multiple exposures are used to capture motion, then motion track information is improved, but sensitivity decreases making object identification difficult
Solution Approach 1:
The patent separates motion capture and object identification into distinct imaging passes: multiple exposures capture motion tracks while single exposure captures high-sensitivity object images. This segmentation ensures that motion information is preserved through multiple exposures without sacrificing object identification quality.
Solution Approach 2:
The single exposure frame acts as an intermediary that provides high-quality object identification data that complements the motion track data from multiple exposures. By combining information from both imaging modes, the system achieves complete object identification and motion tracking capabilities.
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
Enables accurate recognition of objects and their travel directions, improving object recognition accuracy and reducing distortion, especially for fast-moving objects, while maintaining high sensitivity levels.
Implementation Method 1
a single exposure frame created by a single exposure and a multiple exposure frame created by multiple exposures after the single exposure frame, the single exposure frame and the multiple exposure frame being output from an image sensor
Data Source
AI summary
An objective is recognition of the travel direction of an object captured in an image frame. An image generating apparatus includes: a receiver circuit that receives a single exposure frame created by a single exposure and a multiple exposure frame created by multiple exposures after the single exposure frame, the single exposure frame and the multiple exposure frame being output from an image sensor; and a control circuit that specifies a starting point of a motion track of an object in the multiple exposure frame in accordance with a position of the object in the single exposure frame and a position of the same object in the multiple exposure frame.