AM/FM halftoning: improved cost function and training framework

Han, Seong Wook; Jain, Mehul; Kumontoy, Roy; Bouman, Charles A.; Majewicz, Peter; Allebach, Jan P.

doi:10.1117/12.716939

Cited by 1 publication

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, this normalization term endows the cost at a lower frequency with a higher weighting to dominate the entire estimated cost. In Han et al's work [23], the normalization term was modified as…”

Section: Cost Functionsmentioning

confidence: 99%

“…(11) is first applied in stage 1 for each tone for a high similarity to the expected spectrum property. In addition, the PSD generated from the DMDBS [13] is adopted as the ground truth as opposed to the methods [23] which previously utilized DBS. The downhill search algorithm is employed with the optimized ′ for a lower perceived error for each tone to avoid the issue raised at the end of Section 4.1.…”

Section: Endmentioning

confidence: 99%

“…To this end, the perceived error was individually utilized with a HVS-like model for a homogenous halftone texture and better similarity to the tones of interest [12], [20]- [21]. In addition, the power spectrum density (PSD) is employed to measure whether the blue noise property is met [6]- [7], [21]- [23]. For this, Zhou and Fang [6] evaluated the correlations of the three various directions on PSD for a circle-shape spectrum, and the power concentricity was estimated through the power ratio between the entire spectrum and those under the cutoff frequency.…”

Section: Cost Functionsmentioning

confidence: 99%

See 2 more Smart Citations

Dot-Diffused Halftoning With Improved Homogeneity

Liu

Guo

2015

IEEE Trans. on Image Process.

View full text Add to dashboard Cite

Compared to the error diffusion, dot diffusion provides an additional pixel-level parallelism for digital halftoning. However, even though its periodic and blocking artifacts had been eased by previous works, it was still far from satisfactory in terms of the blue noise spectrum perspective. In this work, we strengthen the relationship among the pixel locations of the same processing order by an iterative halftoning method, and the results demonstrate a significant improvement. Moreover, a new approach of deriving the averaged power spectrum density (APSD) is proposed to avoid the regular sampling of the wellknown Bartlett's procedure which inaccurately presents the halftone periodicity of certain halftoning techniques with parallelism. As a result, the proposed dot diffusion is substantially superior to the stateof-the-art parallel halftoning methods in terms of visual quality and artifact-free property, and competitive runtime to the theoretical fastest ordered dithering is offered simultaneously.

show abstract

Section: Cost Functionsmentioning

confidence: 99%

Section: Endmentioning

confidence: 99%