| Title: | Region of interest in JPEG |
| Authors: | Barina, David Klima, Ondřej |
| Citation: | WSCG 2022: full papers proceedings: 30. International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision, p. 1-5. |
| Issue Date: | 2022 |
| Publisher: | Václav Skala - UNION Agency |
| Document type: | konferenční příspěvek conferenceObject |
| URI: | http://hdl.handle.net/11025/49572 |
| ISBN: | 978-80-86943-33-6 |
| ISSN: | 2464-4617 |
| Keywords: | JPEG;oblast zájmu;komprese obrazu |
| Keywords in different language: | JPEG;region of interest;image compression |
| Abstract in different language: | This paper describes three methods to encode a region of interest (ROI) of arbitrary shape in the JPEG standard. The ROI is part of the image encoded with higher quality than the rest of the image. Two of the described methods are based on thresholding of DCT coefficients. The last method is based on the early termination of the entropy coding phase. All methods are fully compatible with existing JPEG decoders. Using ROI, it is possible to reduce the bitrate to only a fraction of the original value. The results in this paper show that thresholding of original DCT coefficients provides superior performance in terms of the PSNR-B index. |
| Rights: | © Václav Skala - UNION Agency |
| Appears in Collections: | WSCG 2022: Full Papers Proceedings |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| A07-full.pdf | Plný text | 1,69 MB | Adobe PDF | View/Open |
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