Title:
A method and a device for detecting the quality defect in an image bit stream
Document Type and Number:
Japanese Patent JP6009578
Kind Code:
B2
Abstract:
There is provided an apparatus for detecting a quality defect in a video sequence, the apparatus comprising: a receiver arranged to receive a video bitstream representing a video sequence; a defect module arranged to determine a measure of quantization parameter for each picture of the video sequence, and a picture type determining module arranged to determine whether each picture of the video sequence is an intra-coded picture, the defect module further arranged to identify a quality defect as an intra-picture flicker when an abrupt change in the measure of quantization parameter occurs for an intra-coded picture.
Inventors:
Petition, martin
Argyropulo, Savasu
Argyropulo, Savasu
Application Number:
JP2014545112A
Publication Date:
October 19, 2016
Filing Date:
December 09, 2011
Export Citation:
Assignee:
Telefon Acty Bora Get Erm Ericson (Pubble)
Deutsche Telecom AG
Deutsche Telecom AG
International Classes:
H04N19/124; H04N17/00; H04N19/146; H04N19/89; H04N19/172
Domestic Patent References:
| JP201011112A | ||||
| JP2009260940A | ||||
| JP2002325254A | ||||
| JP2011199380A | ||||
| JP2006509435A |
Foreign References:
| US20020126258 | ||||
| US20110228859 | ||||
| US20110013694 |
Attorney, Agent or Firm:
Sonoda Yoshitaka
Kobayashi Yoshinori
Kobayashi Yoshinori