| Paper Abstract and Keywords |
| Presentation |
2023-03-10 13:30
Image Size Reduction by Band Limitation of Spatial Frequency According to Coding Difficulty
Yasutaka Matsuo (NES) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
An image size reduction method is proposed as a pre-processing of high compression video coding. The blocking artifact for video coding is likely to generate at a pixel position having a large spatial high-frequency power. It is more likely to generate in aliasing area for video coding of a reduced-size image. To prevent the blocking artifact for this video coding, an amount of band limitation of spatial frequency in the proposal method is controlled adaptively by spectrum power information of an original image and a quantization parameter in video coding of its reduced-size image. In addition, if iteration process is not allowed, a quantization parameter is estimated by only spectrum power information of an original image using an encoding information calculated previously by this video codec. Experiment shows the proposed method is more decreased a coding difficulty than conventional methods to prevent generating of a blocking artifact. Consideration verifies this experimental result and shows improvement method in the future works. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Image Size Reducion / Video Coding / Pre-Processing / Coding Difficulty / Spatial Frequency / / / |
| Reference Info. |
ITE Tech. Rep., vol. 47, no. 11, BCT2023-38, pp. 33-36, March 2023. |
| Paper # |
BCT2023-38 |
| Date of Issue |
2023-03-03 (BCT) |
| ISSN |
Print edition: ISSN 1342-6893 Online edition: ISSN 2424-1970 |
| Download PDF |
|
| Conference Information |
| Committee |
BCT IEEE-BT |
| Conference Date |
2023-03-10 - 2023-03-10 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Okinawa RBC |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Digital Broadcasting Technology |
| Paper Information |
| Registration To |
BCT |
| Conference Code |
2023-03-BCT-BT |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Image Size Reduction by Band Limitation of Spatial Frequency According to Coding Difficulty |
| Sub Title (in English) |
|
| Keyword(1) |
Image Size Reducion |
| Keyword(2) |
Video Coding |
| Keyword(3) |
Pre-Processing |
| Keyword(4) |
Coding Difficulty |
| Keyword(5) |
Spatial Frequency |
| Keyword(6) |
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| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Yasutaka Matsuo |
| 1st Author's Affiliation |
NHK Engineering System (NES) |
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| Speaker |
Author-1 |
| Date Time |
2023-03-10 13:30:00 |
| Presentation Time |
25 minutes |
| Registration for |
BCT |
| Paper # |
BCT2023-38 |
| Volume (vol) |
vol.47 |
| Number (no) |
no.11 |
| Page |
pp.33-36 |
| #Pages |
4 |
| Date of Issue |
2023-03-03 (BCT) |