DMD Mask Construction to Suppress Blocky Structural Artifacts for Medium Wave Infrared Focal Plane Array-Based
1Key Laboratory of Optoelectronic Imaging Technology and System, Ministry of Education, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China.
Sensors (Basel, Switzerland)
|February 13, 2020
Summary
This study introduces a new digital micro-mirror device (DMD) mask design for medium wave infrared (MWIR) focal plane array-based compressive imaging (CI). The novel strategy effectively suppresses blocky structural artifacts (BSA) in reconstructed images, improving image quality and efficiency.
Area of Science:
- Optical Engineering
- Image Processing
- Infrared Technology
Background:
- Medium wave infrared (MWIR) focal plane array-based compressive imaging (CI) enables high-resolution imaging with low-resolution sensors.
- Aperture interference from digital micro-mirror devices (DMD) in MWIR FPA CI systems causes blocky structural artifacts (BSA), degrading image quality.
Purpose of the Study:
- To propose a novel DMD mask design strategy for MWIR FPA CI.
- To effectively suppress BSA and enhance reconstruction efficiency in MWIR FPA CI.
Main Methods:
- Developed a novel DMD mask design strategy tailored for MWIR FPA CI systems.
- Implemented and tested the proposed DMD masks on an actual MWIR FPA CI system.
- Introduced a new evaluation index, blocky root mean square error (BRMSE), for BSA quantification.
Main Results:
- The proposed DMD masks significantly suppress BSA in reconstructed MWIR FPA CI images.
- Reconstruction efficiency is maximized with the novel mask design.
- The new BRMSE index effectively indicates BSA levels in FPA CI.
Conclusions:
- The developed DMD mask design is effective in mitigating BSA in MWIR FPA CI.
- This approach offers reduced storage space and computation costs compared to random binary codes.
- The proposed method enhances overall image quality and provides a reliable metric for artifact evaluation.
