Abstract
A circuit that carries out an Hadamard transform of an input image using the pulse width modulation technique is proposed. The proposed circuit architecture realizes the function of an Hadamard transform with a full-size pixel image. A test chip that we designed and fabricated integrates 64 × 64 pixels in a 4.9mm × 4.9mm area, with 0.35 μm CMOS technology. The functional operation and linearity of this chip are measured. An image processing application utilizing this chip is demonstrated.
| Original language | English |
|---|---|
| Pages (from-to) | 1596-1603 |
| Number of pages | 8 |
| Journal | IEICE Transactions on Electronics |
| Volume | E85-C |
| Issue number | 8 |
| Publication status | Published - 2002 Aug |
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Keywords
- Charge sharing
- Hadamard transform
- Image sensor
- Pulse width modulation technique
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
Cite this
Kousuke, K., Atsushi, I., Takashi, M., & Makoto, N. (2002). An Hadamard transform chip using the PWM circuit technique and its application to image processing. IEICE Transactions on Electronics, E85-C(8), 1596-1603.