| Presentation | 2009-05-15 Real-time processing of local contrast enhancement on FPGA Kentaro KOKUFUTA, Tsutomu MARUYAMA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Adaptive histogram equalization (AHE) is a method for the local contrast enhancement. AHE computes several histograms of intensity values, each corresponding to a distinct region of the image, and uses them to redistribute the intensity values. AHE is very computationally intensive and not acceptable for most applications. In this paper, we propose a method for real-time computation of AHE using an FPGA. In our system, a histogram is generated for each pixel in a image, and the intensity of the pixel is remapped using the histogram. The computational complexity of this approach is very high, but it can generate smooth enhanced images without using interpolation techniques. By reusing partial histograms by temporarily storing them in on-chip memory banks, and by adding/subtracting all bins in the histograms in parallel, we can achieve real-time processing of HD images using an FPGA. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | FPGA / image processing / contrast enhancement |
| Paper # | RECONF2009-14 |
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| Conference Information | |
| Committee | RECONF |
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| Conference Date | 2009/5/7(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Reconfigurable Systems (RECONF) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Real-time processing of local contrast enhancement on FPGA |
| Sub Title (in English) | |
| Keyword(1) | FPGA |
| Keyword(2) | image processing |
| Keyword(3) | contrast enhancement |
| 1st Author's Name | Kentaro KOKUFUTA |
| 1st Author's Affiliation | Systems and Information Engineering, University of Tsukuba() |
| 2nd Author's Name | Tsutomu MARUYAMA |
| 2nd Author's Affiliation | Systems and Information Engineering, University of Tsukuba |
| Date | 2009-05-15 |
| Paper # | RECONF2009-14 |
| Volume (vol) | vol.109 |
| Number (no) | 26 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |