Artistic laser processing using a segmented pixel drawing method with random dot arrangement

Hirokazu Fujiwara; Noriyo Sakurada; Yoshio Ishii; Kazuhiro Watanabe

doi:10.1117/12.515830

10 November 2003 Artistic laser processing using a segmented pixel drawing method with random dot arrangement

Hirokazu Fujiwara, Noriyo Sakurada, Yoshio Ishii, Kazuhiro Watanabe

Proceedings Volume 5120, XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; (2003) https://doi.org/10.1117/12.515830
Event: XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2002, Wroclow, Poland

Abstract

A segmented pixel drawing (SPD) method has been proposed in our laboratory in order to create not only an accurate tone expression but also an artistic tasteful expression which has been expressed by peculiar visual effects and tones from a digital image. The visual effects and tones can be expressed by various surface structures in each segmented pixel. The segmented pixel consists of a dot-matrix arrangement with a controllable dot size. In this SPD method, a slab, RF excited CO₂ laser developed in our laboratory has been used. A transparent acrylic board was used for the processed material because of its high absorptivity to a CO₂ laser. In this study, random dot arrangement has been introduced to the SPD method in order to create a natural and smooth artistic work. By introducing the random dot arrangement, inconspicuous boundary of each pixel and fluent tone change have been realized. Fluent tone was expressed by number of dots in a pixel which is calculated from a logarithm function. Changing the exposed energy for each dot, a size of dot can be flexibly controlled to create various visual effects. From digital image, a tasteful artistic work which has a smooth boundary and fluent changing tone has been successfully obtained by using random dot arrangement.

Citation Download Citation

Hirokazu Fujiwara, Noriyo Sakurada, Yoshio Ishii, and Kazuhiro Watanabe "Artistic laser processing using a segmented pixel drawing method with random dot arrangement", Proc. SPIE 5120, XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (10 November 2003); https://doi.org/10.1117/12.515830

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KEYWORDS

Visualization

Image segmentation

Laser processing

Image processing

Carbon dioxide lasers

Control systems

Digital imaging

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