Gridless Halftoning: A Reincarnation of the Old Method

Pnueli, Y. B.; Bruckstein, Alfred M.

doi:10.1006/gmip.1996.0003

Cited by 17 publications

(8 citation statements)

References 18 publications

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“…Our work instead focuses on monochrome styles such as halftoning, stippling or hatching. Pnueli and Bruckstein [PB96] were among the first to discuss gridless halftoning techniques. Ahmed et al described two line-based halftoning techniques via recursive division [Ahm14] and line amplitude modulation [AD16].…”

Section: Related Workmentioning

confidence: 99%

LinesLab: A Flexible Low‐Cost Approach for the Generation of Physical Monochrome Art

Stoppel

Brückner

2019

Computer Graphics Forum

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The desire for the physical generation of computer art has seen a significant body of research that has resulted in sophisticated robots and painting machines, together with specialized algorithms mimicking particular artistic techniques. The resulting setups are often expensive and complex, making them unavailable for recreational and hobbyist use. In recent years, however, a new class of affordable low‐cost plotters and cutting machines has reached the market. In this paper, we present a novel system for the physical generation of line and cut‐out art based on digital images, targeted at such off‐the‐shelf devices. Our approach uses a meta‐optimization process to generate results that represent the tonal content of a digital image while conforming to the physical and mechanical constraints of home‐use devices. By flexibly combining basic sets of positional and shape encodings, we are able to recreate a wide range of artistic styles. Furthermore, our system optimizes the output in terms of visual perception based on the desired viewing distance, while remaining scalable with respect to the medium size.

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Section: Related Workmentioning

confidence: 99%

LinesLab: A Flexible Low‐Cost Approach for the Generation of Physical Monochrome Art

Stoppel

Brückner

2019

Computer Graphics Forum

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“…Another approach starts directly from lines and employs a curve evolution process controlled by image grayness. This sub-category includes the recent work of Pedersen and Singh [Pedersen and Singh 2006], who use a single non-crossing line which evolves over time, as well as the earlier work of Pnueli and Bruckstein [Pnueli and Bruckstein 1996], who make curves evolve over space into contours.…”

Section: Introductionmentioning

confidence: 98%

“…Over time, however, the halftoning function was occasionally overloaded with the additional goal of stylized rendering: blending an artistic touch with the rendered image, incorporated in the halftoning part. Pnueli and Bruckstein described the halftoning paradigm common to all functional halftoning algorithms as "The local density of black elements should be proportional to the local grayness of the original image" [Pnueli and Bruckstein 1996]. In addition to this, we think that the common paradigm to all stylized halftoning methods is "a close-up look at the rendered image reveals unexpected detailed"; where expected details are pixels in screens and meaningless dots in printers, and unexpected details can be many things including letters (ASCII art), detailed shapes [Ostromoukhov and Hersch 1995], Truchet tiles [Bosch 2011], solid circles [Secord 2002b], and many other forms.…”

Section: Introductionmentioning

confidence: 99%

Modular line-based halftoning via recursive division

Ahmed¹

2014

Proceedings of the Workshop on Non-Photorealistic Animation and Rendering

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We present a new approach for stippling by recursively dividing a grayscale image into rectangles with equal amount of ink, then we use the resulting structure to generate novel line-based halftoning techniques. We present four different rendering styles which share the same underlying structure, two of which bear some similarity to Bosch-Kaplan's TSP Art and Inoue-Urahama's MST Halftoning. The technique we present is fast enough for real time interaction, and at least one of the four rendering styles is well-suited for maze construction.

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“…An 8-bit grayscale image contains 256 different levels of gray from white to black. In contrast, a simple digital image could be a binary picture, [h(x, y)], with each point being either completely black or completely white (Pnueli & Bruckstein, 1996).…”

Section: Introductionmentioning

confidence: 99%

Colorimetric analysis of scanned continuous-tone color images in a Color Managed Digital Photo Printing Workflow (CMDPPW)

Dharavath¹

2019

J. Graph. Eng. Des.

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The purpose of this study is to determine the influence of Color Managed Workflow (CMW) on digital color photo printing. In a CMW, a device profile represents the color characteristics of a device (monitor, scanner, and printer) to be used in the printing workflow. The experiment analyzed the effect of device profiles on scanned and printed continuous-tone color images. The guiding objectives of this study allowed testing of an accepted color management practice to gain a better understanding of the presumptions associated with the application of device profiles. The experiment examined two groups of images [scanned (K1) and printed K2 (K = 2)]. The conclusions of this study are based upon an analysis of colorimetric data, visual assessment, and associated findings. The data from the experiment revealed that very minor color differences were found between the two groups of photos. The colorimetric data suggests that integration of device profiles is important in a CMW as it allows the process to obtain accurate output colors for a desired purpose.

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Gridless Halftoning: A Reincarnation of the Old Method

Cited by 17 publications

References 18 publications

LinesLab: A Flexible Low‐Cost Approach for the Generation of Physical Monochrome Art

LinesLab: A Flexible Low‐Cost Approach for the Generation of Physical Monochrome Art

Modular line-based halftoning via recursive division

Colorimetric analysis of scanned continuous-tone color images in a Color Managed Digital Photo Printing Workflow (CMDPPW)

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