Abstract
An effective algorithm to reduce gray-level disturbance (GLD) in pulse number modulation is proposed. GLD occurs when moving image sequences are presented by plasma display panels (PDPs) or digital micromirror devices (DMDs), which use pulse number modulation to express gray levels. We first develop a systematic model or GLD, and then show that GLD can be eliminated if the light emission pattern of every gray level has the same shape. Based on the ideal condition, we design subfield and driving vectors. The lexicographically largest vector is employed as the subfield vector, since it can flexibly control the shapes of light emission patterns. Then, three methods are proposed to determine driving vectors: the zero-order, first-order, and tree methods. The zero-order method has the lowest implementation complexity, whereas the tree method reduces GLD most effectively. The first-order method offers a good tradeoff between implementation complexity and disturbance reduction capability. Simulation results demonstrate that these methods suppress GLD effectively and provide good moving image quality.
| Original language | English |
|---|---|
| Article number | 043002 |
| Journal | Journal of Electronic Imaging |
| Volume | 15 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2006 Oct 1 |
Fingerprint
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Atomic and Molecular Physics, and Optics
- Computer Vision and Pattern Recognition
Cite this
Gray-level disturbance in pulse number modulation and its reduction algorithm. / Kim, Chang-Su; Kim, Rin Chul.
In: Journal of Electronic Imaging, Vol. 15, No. 4, 043002, 01.10.2006.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Gray-level disturbance in pulse number modulation and its reduction algorithm
AU - Kim, Chang-Su
AU - Kim, Rin Chul
PY - 2006/10/1
Y1 - 2006/10/1
N2 - An effective algorithm to reduce gray-level disturbance (GLD) in pulse number modulation is proposed. GLD occurs when moving image sequences are presented by plasma display panels (PDPs) or digital micromirror devices (DMDs), which use pulse number modulation to express gray levels. We first develop a systematic model or GLD, and then show that GLD can be eliminated if the light emission pattern of every gray level has the same shape. Based on the ideal condition, we design subfield and driving vectors. The lexicographically largest vector is employed as the subfield vector, since it can flexibly control the shapes of light emission patterns. Then, three methods are proposed to determine driving vectors: the zero-order, first-order, and tree methods. The zero-order method has the lowest implementation complexity, whereas the tree method reduces GLD most effectively. The first-order method offers a good tradeoff between implementation complexity and disturbance reduction capability. Simulation results demonstrate that these methods suppress GLD effectively and provide good moving image quality.
AB - An effective algorithm to reduce gray-level disturbance (GLD) in pulse number modulation is proposed. GLD occurs when moving image sequences are presented by plasma display panels (PDPs) or digital micromirror devices (DMDs), which use pulse number modulation to express gray levels. We first develop a systematic model or GLD, and then show that GLD can be eliminated if the light emission pattern of every gray level has the same shape. Based on the ideal condition, we design subfield and driving vectors. The lexicographically largest vector is employed as the subfield vector, since it can flexibly control the shapes of light emission patterns. Then, three methods are proposed to determine driving vectors: the zero-order, first-order, and tree methods. The zero-order method has the lowest implementation complexity, whereas the tree method reduces GLD most effectively. The first-order method offers a good tradeoff between implementation complexity and disturbance reduction capability. Simulation results demonstrate that these methods suppress GLD effectively and provide good moving image quality.
UR - http://www.scopus.com/inward/record.url?scp=33847611510&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847611510&partnerID=8YFLogxK
U2 - 10.1117/1.2360691
DO - 10.1117/1.2360691
M3 - Article
AN - SCOPUS:33847611510
VL - 15
JO - Journal of Electronic Imaging
JF - Journal of Electronic Imaging
SN - 1017-9909
IS - 4
M1 - 043002
ER -