Multiple Exposure Sensor Pixel Grouping for Motion Sequence Detection
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Solution Overview
Problem
Existing photographing apparatuses using global shutter methods struggle to accurately determine the temporal sequence of segmented motions of moving objects due to uniform exposure control across all pixels, leading to difficulties in capturing sharp images of objects in motion.
Innovation Solution
A photographing apparatus that controls exposure times of pixel groups based on color or brightness, allowing for differential exposure control to distinguish and sequence segmented motions by adjusting the on/off states and duty ratios of pixel groups, enabling the capture of multiple exposure images with precise temporal analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If uniform exposure control is applied to all pixels during global shutter operation, then the image sensor can maintain appropriate exposure across the entire image, but the temporal sequence of segmented motions of moving objects cannot be accurately determined
Solution Approach 1:
The patent divides the image sensor pixels into multiple pixel groups that can be controlled independently. Each pixel group can have different exposure times and on/off states, allowing the system to segment the exposure process and track temporal sequences of motions across different regions of the image.
Solution Approach 2:
The patent implements dynamic exposure control where the exposure time and on/off states of pixel groups can be adjusted in real-time based on motion detection. This allows the system to adaptively control exposure for different temporal segments of motions, improving temporal sequence detection precision.
2Measurement precision
If exposure is controlled for segmented motions in different color or brightness, then temporal sequence can be distinguished, but the complexity of controlling exposure for multiple pixel groups increases
Solution Approach 1:
The patent segments pixels into color-based or brightness-based groups, allowing independent exposure control for each segment. This enables the system to apply different exposure times to different color or brightness regions, making motion segmentation more precise while organizing the complexity through systematic grouping.
Solution Approach 2:
The patent changes exposure parameters (exposure time, on/off state) based on color or brightness characteristics of pixel groups. By adjusting these parameters dynamically according to the visual properties of different regions, the system achieves precise motion segmentation while managing control complexity through parameter-based organization.
3Manufacturing precision
If multiple pixel groups are controlled with different exposure times, then sharp images of moving objects can be captured, but the device complexity for coordinating multiple exposure controls increases
Solution Approach 1:
The patent segments the pixel array into multiple independently controllable groups, each capable of having different exposure times. This segmentation allows the system to optimize exposure for different regions to achieve sharp images of moving objects while organizing the coordination complexity through structured pixel group division.
Solution Approach 2:
The patent implements feedback mechanisms where motion detection results are used to adjust exposure control parameters for different pixel groups. This feedback loop enables the system to automatically coordinate multiple exposure controls based on detected motion patterns, achieving sharp images while reducing manual coordination complexity.
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 the accurate determination of the temporal sequence of segmented motions by applying color or brightness variations to motions, improving image clarity and capturing sharp images of moving objects with varied colors and brightness levels.
Implementation Method 1
An image sensor which generates an image by electrically converting light entering through a lens in a photographing apparatus
Data Source
AI summary
A photographing apparatus using a multiple exposure image sensor, and a photographing method thereof are provided. The photographing apparatus includes: an image sensor formed of a plurality of pixels comprising a plurality of colors; input circuitry configured to receive an input of a photographing command; and a processor configured to, in response to a photographing command being input while a photographing mode of the photographing apparatus is a multiple exposure mode, acquire a multiple exposure image by controlling exposure times of a plurality of pixel groups in which the plurality of pixels are grouped by color.