Bionic Birdlike Imaging Using a Multi-Hyperuniform LED Array
Digital cameras obtain color information of the scene using a chromatic filter, usually a Bayer filter, overlaid on a pixelated detector. However, the periodic arrangement of both the filter array and the detector array introduces frequency aliasing in sampling and color misregistration during demos...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-06-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/21/12/4084 |
| _version_ | 1827689808763289600 |
|---|---|
| author | Xin-Yu Zhao Li-Jing Li Lei Cao Ming-Jie Sun |
| author_facet | Xin-Yu Zhao Li-Jing Li Lei Cao Ming-Jie Sun |
| author_sort | Xin-Yu Zhao |
| collection | DOAJ |
| description | Digital cameras obtain color information of the scene using a chromatic filter, usually a Bayer filter, overlaid on a pixelated detector. However, the periodic arrangement of both the filter array and the detector array introduces frequency aliasing in sampling and color misregistration during demosaicking process which causes degradation of image quality. Inspired by the biological structure of the avian retinas, we developed a chromatic LED array which has a geometric arrangement of multi-hyperuniformity, which exhibits an irregularity on small-length scales but a quasi-uniformity on large scales, to suppress frequency aliasing and color misregistration in full color image retrieval. Experiments were performed with a single-pixel imaging system using the multi-hyperuniform chromatic LED array to provide structured illumination, and 208 fps frame rate was achieved at 32 × 32 pixel resolution. By comparing the experimental results with the images captured with a conventional digital camera, it has been demonstrated that the proposed imaging system forms images with less chromatic moiré patterns and color misregistration artifacts. The concept proposed verified here could provide insights for the design and the manufacturing of future bionic imaging sensors. |
| first_indexed | 2024-03-10T10:26:43Z |
| format | Article |
| id | doaj.art-cffcacd50275440092130bf1da7212f4 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T10:26:43Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-cffcacd50275440092130bf1da7212f42023-11-22T00:00:15ZengMDPI AGSensors1424-82202021-06-012112408410.3390/s21124084Bionic Birdlike Imaging Using a Multi-Hyperuniform LED ArrayXin-Yu Zhao0Li-Jing Li1Lei Cao2Ming-Jie Sun3School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, ChinaSchool of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, ChinaSchool of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, ChinaSchool of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, ChinaDigital cameras obtain color information of the scene using a chromatic filter, usually a Bayer filter, overlaid on a pixelated detector. However, the periodic arrangement of both the filter array and the detector array introduces frequency aliasing in sampling and color misregistration during demosaicking process which causes degradation of image quality. Inspired by the biological structure of the avian retinas, we developed a chromatic LED array which has a geometric arrangement of multi-hyperuniformity, which exhibits an irregularity on small-length scales but a quasi-uniformity on large scales, to suppress frequency aliasing and color misregistration in full color image retrieval. Experiments were performed with a single-pixel imaging system using the multi-hyperuniform chromatic LED array to provide structured illumination, and 208 fps frame rate was achieved at 32 × 32 pixel resolution. By comparing the experimental results with the images captured with a conventional digital camera, it has been demonstrated that the proposed imaging system forms images with less chromatic moiré patterns and color misregistration artifacts. The concept proposed verified here could provide insights for the design and the manufacturing of future bionic imaging sensors.https://www.mdpi.com/1424-8220/21/12/4084multi-hyperuniformsingle-pixel imagingfrequency aliasingcolor misregistration |
| spellingShingle | Xin-Yu Zhao Li-Jing Li Lei Cao Ming-Jie Sun Bionic Birdlike Imaging Using a Multi-Hyperuniform LED Array Sensors multi-hyperuniform single-pixel imaging frequency aliasing color misregistration |
| title | Bionic Birdlike Imaging Using a Multi-Hyperuniform LED Array |
| title_full | Bionic Birdlike Imaging Using a Multi-Hyperuniform LED Array |
| title_fullStr | Bionic Birdlike Imaging Using a Multi-Hyperuniform LED Array |
| title_full_unstemmed | Bionic Birdlike Imaging Using a Multi-Hyperuniform LED Array |
| title_short | Bionic Birdlike Imaging Using a Multi-Hyperuniform LED Array |
| title_sort | bionic birdlike imaging using a multi hyperuniform led array |
| topic | multi-hyperuniform single-pixel imaging frequency aliasing color misregistration |
| url | https://www.mdpi.com/1424-8220/21/12/4084 |
| work_keys_str_mv | AT xinyuzhao bionicbirdlikeimagingusingamultihyperuniformledarray AT lijingli bionicbirdlikeimagingusingamultihyperuniformledarray AT leicao bionicbirdlikeimagingusingamultihyperuniformledarray AT mingjiesun bionicbirdlikeimagingusingamultihyperuniformledarray |