Design of minimum visual modulation halftone patterns

Sullivan, Jerome L.; Ray, Lawrence A.; Miller, Rodney L.

doi:10.1109/21.101134

Cited by 131 publications

(91 citation statements)

References 10 publications

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“…Most model-based halftoning methods use variants of this distortion measure. For the spatial response of the eye, however, a number of other models have also been proposed, including some that take into account known anisotropy in the visual-system [292].…”

Section: B Halftoningmentioning

confidence: 99%

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Digital color imaging

Sharma

Trussell

1997

IEEE Trans. on Image Process.

367

200

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Abstract-This paper surveys current technology and research in the area of digital color imaging. In order to establish the background and lay down terminology, fundamental concepts of color perception and measurement are first presented using vector-space notation and terminology. Present-day color recording and reproduction systems are reviewed along with the common mathematical models used for representing these devices. Algorithms for processing color images for display and communication are surveyed, and a forecast of research trends is attempted. An extensive bibliography is provided.

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Section: B Halftoningmentioning

confidence: 99%

“…For display of gray-scale images on binary output devices, a number of researchers have suggested iterative schemes that provide good solutions with varying computational requirements [292]- [296]. For color displays with reasonable sized palettes, the problem remains computationally infeasible at present.…”

Section: B Halftoningmentioning

confidence: 99%

Digital color imaging

Sharma

Trussell

1997

IEEE Trans. on Image Process.

367

200

View full text Add to dashboard Cite

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“…Different spatial HVS models have been tested for use in image halftoning algorithms [23]- [29]. The performance of different HVS models [30]- [33] was evaluated for direct binary search (DBS) based halftoning in [34], and it was found that Nasanen's model, which gives a low-pass approximation, produced halftones with the best subjective quality.…”

Section: Human Visual System Modelmentioning

confidence: 99%

“…Similar to the algorithm of Section III-A, T 0 still controls the amount of (spatial) perceptual error introduced in frame DE i during the process of DWE reduction. If the trial change is accepted, then E i,de,c,total is updated as: (23) Note that the update suggested in (23) needs to be done everytime a pixel value is changed in the i th enhanced frame, DE i . This update ensures that, at any moment,Ē i,de,c,total reflects the actual perceptual error of the enhanced frame DE i due to all pixel changes that have taken place thus far.…”

Section: B Algorithm Ii: Computationally Efficient Reduction Of Dirtmentioning

confidence: 99%

Alleviating Dirty-Window Effect in Medium Frame-Rate Binary Video Halftones

Rehman

Evans

2012

IEEE Trans. on Image Process.

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Abstract-A video display device having a lower number of bits per pixel than that required by the video to be displayed quantizes the video prior to its display. Halftoning can perform this quantization while attempting to reduce the visibility of certain quantization artifacts. Quantization artifacts are, nevertheless, not eliminated. A temporal artifact known as dirtywindow-effect can be commonly observed in medium framerate binary video halftones. In this paper, we propose video halftone enhancement algorithms to reduce dirty-window-effect. We assess the performance of the proposed algorithms by presenting objective measures for dirty-window-effect in the original and the improved halftone videos. The expected contributions of this paper include three medium frame-rate binary video halftone enhancement algorithms that (1) reduce dirty-windoweffect under a spatial quality constraint, (2) reduce dirty-windoweffect under a spatial quality constraint with reduced complexity, and (3) reduce dirty-window-effect under spatial and temporal quality constraints.Index Terms-video halftoning, temporal artifacts, dirtywindow-effect.

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“…In 1974, Mannos and Sakrison established the HVS model for the first time [28]. Numerous researchers have been conducting studies on the HVS [29], [30].…”

Section: Uman Visual System (Hvs) In Watermarkingmentioning

confidence: 99%

An Effective Wavelet-Based Watermarking Scheme Using Human Visual System for Protecting Copyrights of Digital Images

Reddy¹,

Varadarajan²

2010

IJCEE

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Abstract-The modern era of information technology facilitates easy duplication, manipulation and distribution of digital data. This has demanded the certainty for effectively safe guarding the rightful ownership of digital images. Copyright protection and content authentication of digital images have emerged as an imperative concern to content owners and distributors. Digital watermarking provided a potential solution to this issue. The watermarking scheme must possess the characteristics of robustness and imperceptibility to ensure efficient copyright protection. An effective copyright protection is achieved by the incorporation of Human Visual System (HVS) models into watermarking scheme. Recently, interest in watermarking researches are chiefly fascinated by wavelet domain based watermarking schemes. In our earlier work, we have presented an imperceptible and efficient wavelet-based watermarking scheme for protecting the copyrights of images. Here, we have offered a proficient watermarking scheme by effecting some changes to our earlier work. The presented scheme for watermarking incorporates the HVS models into watermark embedding. The biorthogonal wavelet transform with lifting scheme is utilized in the watermarking. The image components for embedding are selected based on the entropy masking. A random matrix is generated on the basis of a key image and is engaged in both embedding and extraction processes. The correlation coefficient computation is made use of in the extraction of watermark. The experimental results illustrate the robustness and imperceptibility of the proposed approach.

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Design of minimum visual modulation halftone patterns

Cited by 131 publications

References 10 publications

Digital color imaging

Digital color imaging

Alleviating Dirty-Window Effect in Medium Frame-Rate Binary Video Halftones

An Effective Wavelet-Based Watermarking Scheme Using Human Visual System for Protecting Copyrights of Digital Images

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