Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Run Length Encoding

A New Proposed Coding Method for Steganography Purpose

Suhad M. Kadhem

Engineering and Technology Journal, 2021, Volume 39, Issue 1B, Pages 243-251
DOI: 10.30684/etj.v39i1B.1510

Transferring data in a safe way is one of the things that have been of interest since ancient times. Data hiding or steganography is a method used to protect the data during its transmission. Coding is a method to represent the data in another shape, so a high level of security is achieved by using coding and hiding data together. The proposed method is a hybrid between coding and hiding, but this paper focuses on proposed a data coding part only, such that the cover text (that used for information hiding) will be used to extract private information between the sender and the receiver for coding process, and the output of the proposed coding method can be used for information hiding process.
Apply the proposed coding method will provide a high level of security and complexity and produce ASCII of non-printed characters which can be employed for steganography purposes to obtain complete similarity between secret text and cover text.

Image Compression Using Lifting Scheme

Yasir A. Ahmed Al-Obaidi; Hadeel N. Abdullah

Engineering and Technology Journal, 2010, Volume 28, Issue 17, Pages 5455-5467

This paper introduces, firstly, a proposed method of computing one and
two-dimensional wavelet transform .The proposed method reduces heavily
processing time for decomposition of image keeping or overcoming the quality of
reconstructed images. Also, the inverse procedures of all the transformations for
multi- dimensional cases verified.
Secondly, computes quantization and run length encoder. Different types
of quantization are presented in this paper with effects of these differences on
Compression Ratio (CR).
Thirdly, compute PSNR, RMSE, CR, and size. The effect noted this
difference in levels of FLWT on same picture, where PSNR, MSRE, SIZE, and
CR different from one level to another.