In-pixel foreground and contrast enhancement circuits with customizable mapping
Abstract This paper presents an in-pixel contrast enhancement circuit that performs image processing directly within the pixel circuit. The circuit leverages HyperFET, a hybrid device combining a MOSFET and a phase transition material (PTM), to enhance performance. It can be tuned for different mode...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-87965-x |
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| author | Md Rahatul Islam Udoy Md Mazharul Islam Elijah Johnson Ahmedullah Aziz |
| author_facet | Md Rahatul Islam Udoy Md Mazharul Islam Elijah Johnson Ahmedullah Aziz |
| author_sort | Md Rahatul Islam Udoy |
| collection | DOAJ |
| description | Abstract This paper presents an in-pixel contrast enhancement circuit that performs image processing directly within the pixel circuit. The circuit leverages HyperFET, a hybrid device combining a MOSFET and a phase transition material (PTM), to enhance performance. It can be tuned for different modes of operation. In foreground enhancement mode, it suppresses low-intensity background pixels to nearly zero, isolating the foreground for better object visibility. In contrast enhancement mode, it improves overall image contrast. The contrast enhancement function is customizable both during the design phase and in real-time, allowing the circuit to adapt to specific applications and varying lighting conditions. A model of the designed pixel circuit is developed and applied to a full pixel array, demonstrating significant improvements in image quality. Simulations performed in HSPICE show a nearly 6x increase in Michelson Contrast Ratio (CR) in the foreground enhancement mode. Furthermore, process variation and Signal-to-Noise Ratio (SNR) analysis has been conducted to evaluate the robustness of the design under manufacturing variations. The simulation results indicate its potential for real-time, adaptive contrast enhancement across various imaging environments. |
| format | Article |
| id | doaj-art-139c6c8070c749a79f4e3bdbc0f9874b |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-139c6c8070c749a79f4e3bdbc0f9874b2025-02-02T12:23:18ZengNature PortfolioScientific Reports2045-23222025-01-0115111010.1038/s41598-025-87965-xIn-pixel foreground and contrast enhancement circuits with customizable mappingMd Rahatul Islam Udoy0Md Mazharul Islam1Elijah Johnson2Ahmedullah Aziz3Department of Electrical Engineering and Computer Science, University of TennesseeDepartment of Electrical Engineering and Computer Science, University of TennesseeDepartment of Electrical Engineering, Columbia UniversityDepartment of Electrical Engineering and Computer Science, University of TennesseeAbstract This paper presents an in-pixel contrast enhancement circuit that performs image processing directly within the pixel circuit. The circuit leverages HyperFET, a hybrid device combining a MOSFET and a phase transition material (PTM), to enhance performance. It can be tuned for different modes of operation. In foreground enhancement mode, it suppresses low-intensity background pixels to nearly zero, isolating the foreground for better object visibility. In contrast enhancement mode, it improves overall image contrast. The contrast enhancement function is customizable both during the design phase and in real-time, allowing the circuit to adapt to specific applications and varying lighting conditions. A model of the designed pixel circuit is developed and applied to a full pixel array, demonstrating significant improvements in image quality. Simulations performed in HSPICE show a nearly 6x increase in Michelson Contrast Ratio (CR) in the foreground enhancement mode. Furthermore, process variation and Signal-to-Noise Ratio (SNR) analysis has been conducted to evaluate the robustness of the design under manufacturing variations. The simulation results indicate its potential for real-time, adaptive contrast enhancement across various imaging environments.https://doi.org/10.1038/s41598-025-87965-xIn-pixel processingImage sensorPixel-level processingContrast enhancementHyperFETPTM |
| spellingShingle | Md Rahatul Islam Udoy Md Mazharul Islam Elijah Johnson Ahmedullah Aziz In-pixel foreground and contrast enhancement circuits with customizable mapping Scientific Reports In-pixel processing Image sensor Pixel-level processing Contrast enhancement HyperFET PTM |
| title | In-pixel foreground and contrast enhancement circuits with customizable mapping |
| title_full | In-pixel foreground and contrast enhancement circuits with customizable mapping |
| title_fullStr | In-pixel foreground and contrast enhancement circuits with customizable mapping |
| title_full_unstemmed | In-pixel foreground and contrast enhancement circuits with customizable mapping |
| title_short | In-pixel foreground and contrast enhancement circuits with customizable mapping |
| title_sort | in pixel foreground and contrast enhancement circuits with customizable mapping |
| topic | In-pixel processing Image sensor Pixel-level processing Contrast enhancement HyperFET PTM |
| url | https://doi.org/10.1038/s41598-025-87965-x |
| work_keys_str_mv | AT mdrahatulislamudoy inpixelforegroundandcontrastenhancementcircuitswithcustomizablemapping AT mdmazharulislam inpixelforegroundandcontrastenhancementcircuitswithcustomizablemapping AT elijahjohnson inpixelforegroundandcontrastenhancementcircuitswithcustomizablemapping AT ahmedullahaziz inpixelforegroundandcontrastenhancementcircuitswithcustomizablemapping |