Title :
Improvement of low gray-level linearity using perceived luminance of human visual system in PDP-TV
Author :
Kang, Sung-Jin ; Do, Hyun-Chul ; Cho, Byung-Gwon ; Chien, Sung-Il ; Tae, Heung-Sik
Author_Institution :
Sch. of Electron. & Electr. Eng., Kyungpook Nat. Univ., Daegu, South Korea
Abstract :
One of the factors deteriorating the image quality of PDP-TV is the low gray-level contour occurring mainly due to inverse gamma correction. From the viewpoint of human visual perception, the low gray-level contour becomes more serious because of the nonlinear output luminance of PDP at low gray-levels. In this paper, a modified inverse gamma correction method and a gray-level linearization technique considering human visual perception are proposed for enhancing image quality at low gray-levels.
Keywords :
brightness; linearisation techniques; plasma displays; television broadcasting; PDP-TV; gray-level linearization technique; human visual system; image enhancement; inverse gamma correction; low gray-level linearity; perceived luminance; plasma display panel; Cathode ray tubes; Humans; Image converters; Image quality; Linearity; Linearization techniques; Nonlinear distortion; Plasma displays; Visual perception; Visual system;
Journal_Title :
Consumer Electronics, IEEE Transactions on
DOI :
10.1109/TCE.2005.1405721
