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Reduction of Image Degradation due to Viewing Angle in Adaptive Dimming Technique
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An adaptive dimming technique controls both LCD panel transmittance and its backlight luminance adequately and locally according to the input TV signal. The technique reduces the power consumption and also improves the picture quality. However, a steep change in backlight luminance distribution due to the application of the technique causes image degradation around the boundary of the segments when the LCD is viewed from an angle. The main factor of image degradation is the illumination of a pixel by neighboring pixel's corresponding backlight when the LCD is viewed from an angle rather than normal direction. From the subjective evaluation of image quality and computer simulation, it is found that the gradient of the backlight luminance variation to luminance at the border of the segment should be less than 0.022 per pixel in order to suppress the image degradation.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E93-C No.11 pp.1572-1576
- Publication Date
- 2010/11/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.E93.C.1572
- Type of Manuscript
- Special Section INVITED PAPER (Special Section on Electronic Displays)
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Seiji OGAKI, Kazuma SAKAKIBARA, Tomokazu SHIGA, "Reduction of Image Degradation due to Viewing Angle in Adaptive Dimming Technique" in IEICE TRANSACTIONS on Electronics,
vol. E93-C, no. 11, pp. 1572-1576, November 2010, doi: 10.1587/transele.E93.C.1572.
Abstract: An adaptive dimming technique controls both LCD panel transmittance and its backlight luminance adequately and locally according to the input TV signal. The technique reduces the power consumption and also improves the picture quality. However, a steep change in backlight luminance distribution due to the application of the technique causes image degradation around the boundary of the segments when the LCD is viewed from an angle. The main factor of image degradation is the illumination of a pixel by neighboring pixel's corresponding backlight when the LCD is viewed from an angle rather than normal direction. From the subjective evaluation of image quality and computer simulation, it is found that the gradient of the backlight luminance variation to luminance at the border of the segment should be less than 0.022 per pixel in order to suppress the image degradation.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E93.C.1572/_p
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@ARTICLE{e93-c_11_1572,
author={Seiji OGAKI, Kazuma SAKAKIBARA, Tomokazu SHIGA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Reduction of Image Degradation due to Viewing Angle in Adaptive Dimming Technique},
year={2010},
volume={E93-C},
number={11},
pages={1572-1576},
abstract={An adaptive dimming technique controls both LCD panel transmittance and its backlight luminance adequately and locally according to the input TV signal. The technique reduces the power consumption and also improves the picture quality. However, a steep change in backlight luminance distribution due to the application of the technique causes image degradation around the boundary of the segments when the LCD is viewed from an angle. The main factor of image degradation is the illumination of a pixel by neighboring pixel's corresponding backlight when the LCD is viewed from an angle rather than normal direction. From the subjective evaluation of image quality and computer simulation, it is found that the gradient of the backlight luminance variation to luminance at the border of the segment should be less than 0.022 per pixel in order to suppress the image degradation.},
keywords={},
doi={10.1587/transele.E93.C.1572},
ISSN={1745-1353},
month={November},}
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TY - JOUR
TI - Reduction of Image Degradation due to Viewing Angle in Adaptive Dimming Technique
T2 - IEICE TRANSACTIONS on Electronics
SP - 1572
EP - 1576
AU - Seiji OGAKI
AU - Kazuma SAKAKIBARA
AU - Tomokazu SHIGA
PY - 2010
DO - 10.1587/transele.E93.C.1572
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E93-C
IS - 11
JA - IEICE TRANSACTIONS on Electronics
Y1 - November 2010
AB - An adaptive dimming technique controls both LCD panel transmittance and its backlight luminance adequately and locally according to the input TV signal. The technique reduces the power consumption and also improves the picture quality. However, a steep change in backlight luminance distribution due to the application of the technique causes image degradation around the boundary of the segments when the LCD is viewed from an angle. The main factor of image degradation is the illumination of a pixel by neighboring pixel's corresponding backlight when the LCD is viewed from an angle rather than normal direction. From the subjective evaluation of image quality and computer simulation, it is found that the gradient of the backlight luminance variation to luminance at the border of the segment should be less than 0.022 per pixel in order to suppress the image degradation.
ER -
English
