IMAGE QUALITY ESTIMATION DEVICE, METHOD, AND PROGRAM

摘要

A packet loss frequency calculation unit (102) which counts, from an extracted packet loss pattern, packet losses generated in a predetermined interval representing the interval of a plurality of continuous IP packets as a packet loss of one time, thereby calculating the value as a packet loss frequency. The packet loss frequency calculation unit (102) also calculates a burst packet loss length representing the number of continuously lost packets from the packet loss pattern. An average burst packet loss length within a quality estimation interval is calculated from the burst packet loss length. A packet loss variation index calculation unit (106) derives a packet loss variation index from the average burst packet loss length. On the other hand, an encoding quality calculation unit (103) calculates an encoded video quality value based on the extracted encoding bit rate and frame rate. A video quality estimation unit (104) calculates a video quality value based on the encoded video quality value, packet loss frequency, and packet loss variation index. This allows to properly estimate the quality of a video in which a burst packet loss has occurred.