A Reduced-Reference Video Quality Assessment Method Based on the Activity-Difference of DCT Coefficients

Abstract

SUMMARYA simple and efficient reduced-reference video quality assessment method based on the activity-difference of DCT coefficients is proposed. The method provides better accuracy, monotonicity, and consistent predictions than the PSNR full-reference metric and comparable results with the full-reference SSIM. It also shows an improved performance to a similar VQ technique based on the calculation of the pixel luminance differences performed in the spatial-domain. key words: DCT, reduced-reference metric, video quality assessment

Novas Técnicas e Ferramentas Aplicadas ao Sistema Brasileiro de TV Digital

“…Esta abordagem pode ser encontrada em (Silva et al, 2013) com a proposta do método RRVQA (Reduced-Reference Video Quality Assessment) para avaliação de qualidade de vídeo baseado na diferença de atividade dos coeficientes DCT (Discrete Cosine Transform) (Rao & Yip, 1990). As componentes de alta frequência, i.e., os coeficientes AC (Alternating Coefficient), são responsáveis pelos detalhes em um quadro e são menos perceptíveis pelo SVH.…”