Editor’s Note: This article originally appeared on Sound & Video Contractor.
While we are all used to a display’s brightness being measured in nits, Samsung Display has argued that they have a superior method. The Korean manufacturer points to advances in display technology as the reason, with displays exponentially jumping in both brightness and true color accuracy over the last several generations. Samsung, who also manufactures QD-OLED panels for Sony, says that their eXperienced Color Range (XCR) is a better method to quantify a display’s brightness and color accuracy.
To help support their claim, Samsung has just announced that SEMI (Semiconductor Equipment and Materials Institute), a company that is responsible for overseeing international standards for displays, has adopted the XCR method as their new standard.
“Samsung Display announced today that its eXperienced Color Range (XCR) measurement method has been officially implemented as an international standard by the Semiconductor Equipment and Materials Institute (SEMI), an institute representing more than 2,500 semiconductor and display companies worldwide and responsible for reviewing and establishing relevant international standards,” reads Samsung Display’s announcement.
“Even when two screens have the same luminance value, the human eye will still be able to see a clear difference in perceived brightness. This is because human perception of brightness is affected not only by luminance but also by the type of color and its saturation. XCR reflects how a display with better color reproduction appears much brighter when the luminance value is the same whereas traditional luminance measurement methods do not account of this phenomenon,” explains Samsung Display.
“XCR is a way of quantifying the perceived brightness of displays based on a color appearance model to convert the measured spectrum of light into perceptual attributes, such as achromatic brightness, colorfulness and hue.”
Samsung offers an example with the following:
“One example can be found in Figures 3 to 6. For this image of billiard balls, the QD-OLED and conventional displays were predicted by CIECAM16 to produce similar values of achromatic brightness (Figure 4). However, the image on the QD-OLED is much more colorful (Figure 5), leading to greater values of PCL Vividness (Figure 6). This agrees with our subjective testing, which rated the QD-OLED as brighter for this image.”
See also:
