Results 41 to 50 of about 152,070 (321)
Assessing Pragmatics through MDCTs: A Case of Iranian EFL Learners [PDF]
Iranian Journal of Applied Language Studies, 2014 Testing pragmatic competence has always posed daunting challenges to researchers and practitioners. As a step to address the gap in pragmatic testing, this paper delineates the procedural stages of developing and validating a context-sensitive Multiple ...
Majid Nemati +2 more
doaj +1 more source
Fast algorithm for the 3-D DCT-II [PDF]
, 2004 Recently, many applications for three-dimensional (3-D) image and video compression have been proposed using 3-D discrete cosine transforms (3-D DCTs). Among different types of DCTs, the type-II DCT (DCT-II) is the most used.
Alshibami, H.O., Boussakta, S.
core +1 more source
A Robust Image Watermarking Technique With an Optimal DCT-Psychovisual Threshold
IEEE Access, 2018 This paper presents a reliable digital watermarking technique that provides high imperceptibility and robustness for copyright protection using an optimal discrete cosine transform (DCT) psychovisual threshold.
F. Ernawan, M. Kabir
semanticscholar +1 more source
Recent H-alpha results on pulsar B2224+65's bow-shock nebula, the "Guitar" [PDF]
, 2016 We used the 4 m Discovery Channel Telescope (DCT) at Lowell observatory in 2014 to observe the Guitar Nebula, an Hα bow-shock nebula around the high-velocity radio pulsar B2224+65.
Cashmen, Lauren R. +5 more
core +2 more sources
Digital Image Watermarking Techniques: A Review
Information, 2020 Digital image authentication is an extremely significant concern for the digital revolution, as it is easy to tamper with any image. In the last few decades, it has been an urgent concern for researchers to ensure the authenticity of digital images ...
Mahbuba Begum, Mohammad Shorif Uddin
doaj +1 more source
A New Method For Digital Watermarking Based on Combination of DCT and PCA
, 2015 In the digital watermarking with DCT method,the watermark is located within a range of DCT coefficients of the cover image. In this paper to use the low-frequency band, a new method is proposed by using a combination of the DCT and PCA transform.
Hosseini, S. Abolfazl, Saboori, Arash
core +1 more source
High capacity steganographic method based upon JPEG [PDF]
, 2008 The two most important aspects of any image-based steganographic system are the quality of the stegoimage and the capacity of the cover image. This paper proposes a novel and high capacity steganographic approach based on Discrete Cosine Transformation (
Al-Mohammad, A, Ghinea, G, Hierons, RM
core +1 more source
Steerable Discrete Cosine Transform [PDF]
, 2017 In image compression, classical block-based separable transforms tend to be inefficient when image blocks contain arbitrarily shaped discontinuities. For this reason, transforms incorporating directional information are an appealing alternative.
Fosson, Sophie Marie +2 more
core +2 more sources
New Stenographic method to hiding information in digital image [PDF]
مجلة جامعة الانبار للعلوم الصرفة, 2017 Steganography is the art of hiding information in different cover media, then sending & displaying the hidden information especially in public places, Therefore, different methods have been proposed so far for hiding information. In this paper new method
Falath M.Mohammed
doaj +1 more source
Multiple description video coding based on zero padding [PDF]
, 2004 This paper proposes a simple multiple description video coding approach based on zero padding theory. It is completely based on pre- and post-processing, which require no modifications to the source codec.
Bull, DR +3 more
core +2 more sources