A Novel Still Image Error Concealment Using Fragile Watermarking in Wireless Image , Transmission and Packet-Switched Networks
سال انتشار: 1388
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 163
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شناسه ملی سند علمی:
JR_ITRC-1-3_005
تاریخ نمایه سازی: 23 فروردین 1401
چکیده مقاله:
In this paper, we propose a new error concealment method for covering up the high packet losses of an original image after its transmission through an error-prone channel. Our proposed technique utilizes, Discrete Wavelet Transform (DWT) to produce a lower resolution copy of the original image. Then we embed some o'f discrete cosine transform (DCT) coefficients of this downsized replica of the original image into the original image in the spatial (pixel) domain inside macroblocks (MBs) as a watermark. This technique can be implemented for error-prone channels to combat degradations due to packets loss in a backward-compatible scheme.
کلیدواژه ها:
نویسندگان
Davood Bashiri
Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran
Ali Aghagolzadeh
Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran
Javad Musevi niya
Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran
Mahdi Nooshyar
Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran