title: Perceptual video quality assessment in H.264 video coding standard using objective modeling.
abstract: Since usage of digital video is wide spread nowadays, quality considerations have become essential, and industry demand for video quality measurement is rising. This proposal provides a method of perceptual quality assessment in H.264 standard encoder using objective modeling. For this purpose, quality impairments are calculated and a model is developed to compute the perceptual video quality metric based on no reference method. Because of the shuttle difference between the original video and the encoded video the quality of the encoded picture gets degraded, this quality difference is introduced by the encoding process like Intra and Inter prediction. The proposed model takes into account of the artifacts introduced by these spatial and temporal activities in the hybrid block based coding methods and an objective modeling of these artifacts into subjective quality estimation is proposed. The proposed model calculates the objective quality metric using subjective impairments; blockiness, blur and jerkiness compared to the existing bitrate only calculation defined in the ITU G 1070 model. The accuracy of the proposed perceptual video quality metrics is compared against popular full reference objective methods as defined by VQEG.
authors.affiliation: Teclever Solutions Pvt Ltd, Bangalore, India.
authors.forename: Ramasamy
authors.initials: R
authors.lastname: Karthikeyan
authors.affiliation: HCL Technologies Ltd, Chennai, India.
authors.forename: Gopalakrishnan
authors.initials: G
authors.lastname: Sainarayanan
authors.affiliation: Department of EEE, Anna University, Regional Centre, Coimbatore, India.
authors.forename: Subramaniam Nachimuthu
authors.initials: SN
authors.lastname: Deepa
keywords: AVC; Blockiness; Blur; H.264; Jerkiness; Mean opinion score [MOS]; Perceptual video quality