The purpose of this study was to investigate the feasibility of replacing true non-contrast (TNC) dual-energy computed tomography (DECT) images with virtual non-contrast (VNC) DECT images by comparing their quality on the basis of both the peak signal-to-noise ratio (P...
(image structural similarity index), PSNR(peak signal-to-noise ratio) and CC(correlation coefficient). But I find they perform different tendency in some cases. Can anyone explain the difference between these indexes. PS: One of the images is original image,...
The mean square difference of a component for two images is the mean square difference of the component value, comparing each pixel with the pixel in the same position of the other image. For the purposes of this computation, components are normalized to the scale [0..1]. ...
When comparing video codecs or encoder implementations, PSNR approximates the human perception of reconstruction quality. Typical PSNR values in lossy image and video compression are between 30 and 50 dB if the bit depth is 8 bits (higher means better quality). For a video sequence, there are ...
This paper is mainly stressed on comparing different image quality metrics to give a comprehensive view. Ex- perimentation with these metrics using benchmark images is performed through denoising for different noise concentrations. All metrics have given consistent results. However, from representation ...