Title:
Video coding equipment, a video decoding device, a video system, a video encoding method, a video decoding method, and a program
Document Type and Number:
Japanese Patent JP6087739
Kind Code:
B2
Abstract:
Coding performance is improved by enhancing image quality through filtering. A video coding device and a video decoding device are provided with a preliminary analysis unit 5, and the preliminary analysis unit 5 is provided with a pixel value gradient feature amount calculation unit 51, a dynamic threshold determination unit 52, and a threshold processing and sorting unit 53. The pixel value gradient feature amount calculation unit 51 calculates the pixel value gradient for every pixel or small area constituting a pre-filtering local decoded image. The dynamic threshold determination unit 52 dynamically determines a threshold, based on the pixel value gradient for every pixel or small area. The threshold processing and sorting unit 53 sorts the pixels or the small areas using the dynamically determined threshold.
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Inventors:
Yoshino Toshinobu
Naito Sei
Naito Sei
Application Number:
JP2013120890A
Publication Date:
March 01, 2017
Filing Date:
June 07, 2013
Export Citation:
Assignee:
KDDI CORPORATION
International Classes:
H04N19/117; H04N19/136; H04N19/176; H04N19/182; H04N19/82
Domestic Patent References:
| JP2012161063A | ||||
| JP8016793A |
Foreign References:
| WO2011125867A1 | ||||
| WO2011102074A1 | ||||
| WO2010146771A1 | ||||
| WO2009110559A1 | ||||
| US20080152247 |
Attorney, Agent or Firm:
Kiyoshi Kato
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