Image Sensor Partial Region Readout for Motion Blur Suppression
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Solution Overview
Problem
Existing image sensor technologies face challenges in minimizing motion blur, saturated regions, and reduced signal-to-noise ratio (S/N) ratio, particularly in high-resolution image capture, due to limitations in exposure time adjustment and complex algorithms required for motion blur removal.
Innovation Solution
A reception and transmission apparatus system that allows for selective image data processing by receiving and transmitting image data in either whole or partial region modes, with adjustable exposure times and region-specific data transmission, using the MIPI CSI-2 standard for efficient data handling and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If exposure time is extended to improve sensitivity, then signal-to-noise ratio improves, but motion blur increases
Solution Approach 1:
The image sensor divides the captured region into multiple partial regions, and the transmission apparatus transmits image data from these partial regions separately. This segmentation allows the system to process and combine multiple short-exposure images to achieve the sensitivity of a long exposure without the motion blur penalty.
Solution Approach 2:
The system captures multiple images with short exposure times in rapid succession, then combines them through image processing. This periodic capture approach maintains high frame rates while achieving the cumulative signal effect of longer exposure through temporal stacking of multiple frames.
2Object-affected harmful factors
If multiple frames are used for motion compensation, then motion blur is reduced, but internal buffer memory is required
Solution Approach 1:
The transmission apparatus extracts and transmits only the necessary image data from partial regions directly to the external device, eliminating the need for large internal buffer memory. The external device then performs the image processing and combination operations that would otherwise require significant onboard storage capacity.
3Loss of information
If whole captured region is transmitted, then complete image data is received, but data transmission time increases
Solution Approach 1:
The captured region is divided into multiple partial regions, and image data from these regions is transmitted separately and concurrently. This segmentation reduces the amount of data that needs to be transmitted at once, thereby reducing overall transmission time while still providing complete image information through combination at the receiving end.
Solution Approach 2:
The system transmits data from partial regions rather than the entire captured region in each transmission cycle. This partial action approach reduces transmission time and data volume, while the receiving device combines multiple partial region datasets to reconstruct the complete image.
Data Source
AI summary
Provided is a reception apparatus that includes an information processing section configured to generate an image at least either in a first mode for reading out a whole captured region or in a second mode for reading out a partial region in the captured region. At the time of readout in the second mode, the image processing section varies a readout rate depending on the region.