| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2023-03-30 |
| タイトル |
|
|
タイトル |
JPEG-Based Image Enhancement Method with Steganographic Data Embedding and Its Performance Evaluation |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
steganography |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
image enhancement |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
JPEG compression |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
DCT |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
entropy coding |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| 著者 |
古川, 功
鈴木, 純司
Furukawa, Isao
Suzuki, Junji
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
We propose a concrete configuration that enables a sender who has high resolution images to embed high frequency components of the images in the JPEG codes for lower resolution images using steganographic data embedding method. In this configuration, public receivers of the JPEG files can decode low resolution images, while specific receivers who know the fact that the high frequency components are embedded in the JPEG files can obtain high resolution images by extracting the embedded enhancement codes. For this purpose, three key methods are developed: a construction method for 16×16 higher frequency quantized DCT coefficients in the encoder, an embedding method to 8×8 lower resolution quantized DCT coefficients in the encoder, and an extraction method for the enhancement codes in the decoder. Moreover, it is clarified that the embedding operation for the enhancement codes can be omitted under specific conditions. As a result of simulation experiment that employ the proposed key methods are executed using natural images, the performance of the system is evaluated in terms of a total amount of enhancement codes, a relationship between quantization quality factors for lower and higher frequencies, a payload for embedding enhancement codes, and SNR characteristics. |
| 書誌情報 |
広島工業大学紀要. 研究編
巻 49,
p. 97-108,
発行日 2015-02
|
| 出版者 |
|
|
出版者 |
広島工業大学 |
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
13469975 |
| 書誌レコードID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11599110 |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
application/pdf |
| 著者版フラグ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
research49_097-108.pdf (1.9 MB)
