Improved invisible watermarking technique using IWT-DCT

Agrwal, Shubh Lakshmi; Yadav, Anita; Kumar, Umesh; Gupta, Sandeep

doi:10.1109/icrito.2016.7784966

Cited by 18 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Dalam watermarking ada dua jenis watermarking yaitu visible watermark invisible watermark, visible watermarking berarti suatu watermark yang dapat dilihat secara jelas oleh mata manusia, sehingga watermark yang diberikan mudah untuk dihapus dengan berbagai cara dengan software telah tersedia. Sedangkan invisible watermarking adalah watermark yang bersifat rahasia dengan begitu tidak dapat dilihat secara langsung oleh mata manusia dengan tujuan untuk merahasiakan pesan atau watermark yang diberikan pada citra host [9].…”

Section: Watermakingunclassified

Non-Blind Watermarking Menggunakan Discrete dan Wavelet Transform

Sinaga

Jatmoko

2022

JMASIF

View full text Add to dashboard Cite

Pada zaman sekarang orang mudah untuk mengakses internet sehingga semua orang dapat memperoleh suatu karya seni digital seperti gambar dengan mudah, kemudian seseorang dapat memodifikasi dan menyebarkan kembali karya tersebut tanpa izin atau tanpa memberikan sumber originalnya. Pada masalah ini dibutuhkan upaya untuk memberikan watermark yang tidak terlihat sehingga tidak mudah untuk menghilangkan watermark gambar tersebut, menggunakan kombinasi DCT dan DWT 1 level untuk memberikan watermark secara tak terlihat pada suatu karya seni. Dari metode kombinasi DCT-DWT diperoleh dengan gambar watermark 64x64 nilai PSNR 39.1529 dB dari hasil tersebut dapat disimpulkan bahwa metode kombinasi DCT-DWT mendapatkan nilai imperceptibility yang baik. Ketahanan gambar diuji dari berbagai proses maipulasi gambar seperti noise, filter, kompresi JPG, dan lain-lain. Hasil dari manipulasi gambar mendapatkan rata-rata NCC bernilai lebih dari 0.6 sehingga dapat disimpulkan metode DCT-DWT tahan (robust) terhadap beberapa serangan citra.

show abstract

Section: Watermakingunclassified

Non-Blind Watermarking Menggunakan Discrete dan Wavelet Transform

Sinaga

Jatmoko

2022

JMASIF

View full text Add to dashboard Cite

show abstract

“…9, No.1, 2021 frequency domain watermarking is useful. Singular Value Decomposition (SVD)The algorithm splits the matrix into two U, V and S arrays [9,13]. The values for the unique A matrix are related to this matrix.…”

Section: Dct (Discrete Cosine Transform)mentioning

confidence: 99%

“…The effectiveness of this treatment is also measured on the basis of the BCR for various types of attack. S. L. Agrwal et al [9]In comparison to DWT+DCT based watermarking technology, this proposed algorithm implements Hybrid Integer transforming and differentiated costume transformation based watermarking approach to achieve increased imperceptibility and robustness. The proposed combined watermarking technique based on IWT+DCT eliminates fractional losses relative to watermarking based on DWT.…”

Section: Introductionmentioning

confidence: 99%

Robust Digital Watermarking Techniques for Protecting Copyright

Ji¹

2021

ITII

View full text Add to dashboard Cite

Digital watermarking is the effective method of copyright defence. Typically robot-proof watermarks used to secure copyright, and are immune to some deletion or adjustment of protected documents. Fragile watermarks are typically used for content identification and are vulnerable to small alterations. In this paper, we suggest a hybrid watermarking approach that combines a solid and fragile watermark with copyright and material authentication. This mechanism is often resistant to manipulation and to clone attacks at the same time. The relationship between a delicate watermark and a stable watermark is characterised by our involvement. DCT coefficients are used to integrate the values of the watermark.

show abstract

“…It is known, for researches of the discrete cosine transformation (DCT) field, that the DCT has good properties related to energy concentration. Therefore, it has been employed in many applications, such as image compression, watermarking, and object recognition (Agrwal et al, 2016;Zhou et al, 2018). This DCT technique is used to convert images or signals from space time into the spectral domain.…”

Section: Apdcbt and Dctmentioning

confidence: 99%

Image Watermarking Using All Phase Discrete Cosine Biorthogonal Transform in Selected Pixel Blocks

Khalifa

Saeed

2020

Polytechnic j.

View full text Add to dashboard Cite

In the past decade, a transform called all phase discrete cosine biorthogonal transform (APDCBT) appeared in the field of digital image processing. It is mainly used to solve the negativity found in discrete cosine transform (DCT), especially in a low bit rate. In this paper, the APDCBT is employed for watermark insertion based on selected regions of an image. The insertion is depending on the homogeneity of each part of the image. To determine the extent of homogeneity, there are two criteria: Mean and standard deviation are applied for the intensity of the image. Medium frequency bands of APDCBT in image pixel blocks are used to hold the embedded watermark. Then, the transform is inversed to obtain the resultant watermarked image. The robustness of APDCBT against watermark removal attacks is tested and the experimental results showed the superiority of the APDCBT over traditional DCT in the watermark embedding system. More specifically, when the LSB reset attack applied. For instance, when the contrast adjustment attack applied, the average of normalized cross-correlation (NCC) values of extracted watermark images with the original watermark, it was 0.992 for the proposed method. This is a promised result, if it is compared with the NCC of the DCT method, which was 0.423. The proposed method can be used for copyright protection purpose.

show abstract

Improved invisible watermarking technique using IWT-DCT

Cited by 18 publications

References 8 publications

Non-Blind Watermarking Menggunakan Discrete dan Wavelet Transform

Non-Blind Watermarking Menggunakan Discrete dan Wavelet Transform

Robust Digital Watermarking Techniques for Protecting Copyright

Image Watermarking Using All Phase Discrete Cosine Biorthogonal Transform in Selected Pixel Blocks

Contact Info

Product

Resources

About