Overall noise characteristics of reduced images on liquid crystal display and advantages of independent subpixel driving technology

Abstract

ISD affected the noise-characteristic advantages of reduced images displayed on LCDs, particularly at low frequencies.

A method for evaluating image quality of monochrome and color displays based on luminance by use of a commercially available color digital camera

“…16), as they are dominated by the image noise of the displayed x-ray images rather than inherent spatial noise, especially at the low-frequency range. 15 Commercially available color cameras need the capacity to record captured images in raw (uncompressed and unprocessed) format to enable the evaluation of the LCDs. 16 In addition, owing to the fact that all of the three color cameras provide sufficient resolution and noise properties for the MTF and WS measurements of the LCDs (Fig.…”

“…In addition, the overall noise properties were evaluated by measuring the overall WS of the LCDs on which x-ray exposed images were displayed, adopting the same calculation method as that for the inherent WS of the LCDs. 15 X-ray images of a 9-cm-thick Lucite phantom that simulated the x-ray attenuation in a peripheral lung 27 were taken using a flat-panel detector (FPD) (exposure condition: 120 kV, 2.5 mAs; PLAUDR C30, Konica Minolta). The FPD system provided 12-bit-depth images per 0.139 mm pixel.…”

“…1 With the rapid development of the display devices, the evaluation of the display performance is necessary to appropriately select a LCD in clinical situations, e.g., monochrome or color, resolution, maximum brightness, cold-cathode fluorescent lamp or LED backlight, handheld display, and display system for stereoscopic device. [10][11][12][13][14][15] In this paper, we focus on developing an evaluation method for LCDs by using a widely available single-lens reflex digital color camera (hereafter referred to as color camera) instead of a photometric camera.…”