High Dynamic Range Imaging Sequence for Interlace Bounce Elimination
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Solution Overview
Problem
Current high dynamic range imaging methods face challenges in capturing both bright and dark areas effectively, leading to interlace bounce and reduced effective frame rates when using multiple capture intervals, which affects image smoothness and detail preservation.
Innovation Solution
A method and system that define n capture intervals and capture images in a repeating sequence of 2n−2 steps, duplicating n−2 intervals to maintain consistent detector row operation, and dynamically determine scaling relationships between pixel values using analysis methods like linear regression or Robust Estimation to generate composite frames with overlapping groups of successive images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If three or more capture intervals are used in a simple sequence, then the dynamic range is improved, but interlace bounce occurs causing image instability
Solution Approach 1:
The capture sequence is segmented into distinct capture intervals (e.g., first capture interval for bright areas, second capture interval for mid-range areas, third capture interval for dark areas). Each segment targets specific luminance ranges, allowing the system to capture the full dynamic range while maintaining stable image composition through consistent detector row mapping within each segment.
2Manufacturing precision
If multiple capture intervals are used to improve dynamic range, then detail in both bright and dark areas is improved, but the effective frame rate is reduced
Solution Approach 1:
The system maintains continuous useful action by overlapping the time periods during which different capture intervals are acquired. Instead of completing all captures at one interval before moving to the next, the system interleaves captures at different intervals within the same time window, ensuring that composite frames are generated continuously at the desired frame rate while still capturing detail across the full dynamic range.
3Device complexity
If standard capture electronics operating at fixed refresh rate are used, then hardware simplicity is maintained, but the effective frame rate is reduced when combining multiple capture intervals
Solution Approach 1:
The system introduces dynamic control over the capture timing and sequence, allowing the capture electronics to flexibly switch between different capture intervals within each frame period. This dynamic approach enables the system to adapt the capture schedule to maintain the desired effective frame rate while using standard hardware, rather than being constrained by a fixed refresh rate that would reduce productivity.
Data Source
AI summary
A method for high dynamic range imaging using more than two capture intervals, where images are captured in a repeating sequence that avoids interlace bounce, and overlapping groups of combined images form composite frames for output, and an imaging system comprising an imaging array, processing means and a display, wherein the imaging array is operable to capture a succession of images by detecting incident light and the processing means is operable to process said images as required, and pass the processed images to the display for output.