Improvement in the picture quality of moving pictures for matrix displays

Abstract

— When a picture moves linearly at a specific velocity, its spectrum is distributed in the gaps between the high-order harmonics in the 3-D spatial-frequency region, and therefore the pass band of the picture spectrum is apparently extended. The extension of the pass band does not contribute to picture quality in the RGB-trio arrangement, but in some mosaic arrangements it may improve picture quality by eliminating discoloring of details due to human-vision characteristics. The relation between picture motion and quality, which can be represented by the 3D Nyquist limits, can be verified by experiment or by the simple TFZP method. Subjective evaluation of the RGGB-mosaic shows that, when the picture moves linearly, discoloring is almost completely eliminated at a velocity that can be estimated from the structure of the 3D Nyquist limits incorporating human-vision characteristics. Good picture quality can be obtained at a velocity of 1 dot/field. The TFZP method makes it possible to verify the region where discoloring is eliminated by directly observing a cross-section of the 3D Nyquist limits that incorporates human-vision characteristics.