By Topic

IET Image Processing

Issue 5 • 5 2017

Filter Results

Displaying Results 1 - 8 of 8
  • RKEM: Redundant Keypoint Elimination Method in Image Registration

    Publication Year: 2017, Page(s):273 - 284
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (9970 KB)

    Image features can be identified using keypoints, and there are various algorithms to detect these important points of an image. Scale-invariant feature transform (SIFT) is one of the most applicable algorithms in keypoint extraction. One of the deficiencies of SIFT and its modifications is that they extract redundant keypoints along with the important ones. A keypoint is called redundant if it is... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Image colourisation using linear neighbourhood propagation and weighted smoothing

    Publication Year: 2017, Page(s):285 - 291
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (5528 KB)

    Image colourisation is the process used to add colour to a grey-level image using computers and is based on the local artificial colours of the image. This study proposes a colourisation method based on linear neighbourhood propagation and weighted smoothing. The method avoids the colour-crossing problem associated with existing methods and enables the achievement of natural and smooth colours. Th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Quality index evaluation of videos based on fuzzy interface system

    Publication Year: 2017, Page(s):292 - 300
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (4481 KB)

    Objective image quality assessment (IQA) is a challenge facing digital image and video processing systems because image quality is distorted during various applications, including restoration, compression, storage and transmission. Therefore, this study proposes a new methodology based on a fuzzy interface system called quality evaluation system (QES) to measure the total quality index (TQI) of in... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Blur-invariant copy-move forgery detection technique with improved detection accuracy utilising SWT-SVD

    Publication Year: 2017, Page(s):301 - 309
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (6861 KB)

    Majority of the existing copy-move forgery detection algorithms operate based on the principle of image block matching. However, such detection becomes complicated when an intelligent adversary blurs the edges of forged region(s). To solve this problem, the authors present a novel approach for detection of copy-move forgery using stationary wavelet transform (SWT)... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Regularised differentiation for image derivatives

    Publication Year: 2017, Page(s):310 - 316
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (3531 KB)

    This study investigates a regularised differentiation method to estimate image derivatives. The scheme minimises an integral functional containing an anti-differentiation data discrepancy term and a smoothness regularisation term. When discretised, the Euler–Lagrange necessary conditions for a minimum of the functional yield a large scale sparse system of linear equations, ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Pruned non-local means

    Publication Year: 2017, Page(s):317 - 323
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (4761 KB)

    In non-local means (NLM), each pixel is denoised by performing a weighted averaging of its neighbouring pixels, where the weights are computed using image patches. The authors demonstrate that the denoising performance of NLM can be improved by pruning the neighbouring pixels, namely, by rejecting neighbouring pixels whose weights are below a certain threshold View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Chaos-based fast colour image encryption scheme with true random number keys from environmental noise

    Publication Year: 2017, Page(s):324 - 332
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (7140 KB)

    The paper proposes a chaos-based colour image encryption scheme, the highlight is that the randomly sampled noise signal is applied to serve as the initial values of a chaotic system. The 256-bit hash value of noise is transformed into the one-time initial values of the Liu system. The sequences generated by Liu system are subjected to three batteries of TestU01. Exclusive OR, the only operation, ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Frame duplication/mirroring detection method with binary features

    Publication Year: 2017, Page(s):333 - 342
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (5432 KB)

    Multimedia devices have become increasingly popular due to high quality and low cost products using advanced technology. These devices can capture multimedia files, which can be modified easily by video editing tools. One of the most frequently encountered forgery types in video forensics is the frame duplication (FD) forgery. Many methods have been proposed in the literature to deal with this typ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

The range of topics covered by IET Image Processing includes areas related to the generation, processing and communication of visual information.

Full Aims & Scope

Meet Our Editors

Publisher
IET Research Journals
iet_ipr@theiet.org