Abstract
The tone rendering distortion index (TRDI), which assesses image quality
degradation via the distortion within a display of the tone rendering curve (TRC), is
introduced and investigated. The effect of the tone rendering distortion upon image
quality is different from the effect of data-loss during image compression. The tone
rendering distortion changes the lightness, hue and chroma, which results in degradation
of an image into irregular patterns depending upon the shape of the distorted TRC. While
peak-signal-to-noise ratio (PNSR) and color differences do not represent the image
quality very well, the TRDI shows a strong agreement with the human-perceived image
quality, despite its simplicity. The method is useful for developing new display
technology as well as for refining the image processing within display
systems.
© 2011 IEEE
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