• Journal of KIISE:Computer Systems and Theory
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• v.35 no.7
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• pp.340-353
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• 2008

A computational color palette extraction model is introduced to describe paint brush objectively and efficiently. In this model, a color palette is defined as a minimum set of colors in which a painting can be displayed within error allowance and extracted by the two step processing of color grouping and major color extraction. The color grouping controls the resolution of colors adaptively and produces a basic color set of given painting images. The final palette is obtained from the basic color set by applying weighted k-means clustering algorithm. The extracted palettes from several famous painters are displayed in a 3-D color space to show the distinctive palette styles using RGB and CIE LAB color models individually. And the two experiments of painter classification and color transform of photographic image has been done to check the performance of the proposed method. The results shows the possibility that the proposed palette model can be a computational color analysis metric to describe the paint brush, and can be a color transform tool for computer graphics.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.1
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• pp.487-493
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• 2020

Recently, the ministry of environment banned the use of the existing airless method using the spray in painting industrial facilities. Therefore, it is necessary to develop a pressure-roller attached to existing airless painting systems. The hole design of the SUS piping and drum-bases of pressure-rollers currently developed and sold have not been studied in detail, so their efficiency is questionable. In particular, if sufficient paint is not supplied to both ends of the roller, it is necessary to rework with a brush after painting. Therefore, the holes of the drum base need to be distributed so that the paint can flow to both ends of the roller. In this study, numerical analysis was performed to determine the effects of the hole design in the SUS piping and drum-base on the flow patterns of the paint and to suggest more efficient design measures. The analysis results showed that the uniform placement of the holes in the SUS piping is good for the balanced inflow of the paint. For the drum-base, the paint can flow better into both ends of the roller when the holes are concentrated and machined on both ends of the drum-base.

• Journal of Conservation Science
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• v.37 no.6
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• pp.701-711
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• 2021

This study identifies the structure and material characteristics of the mural paintings in Daeungjeon at Ssanggyesa temple in Jindo by conducting scientific research and analysis including microscope examination, SEM-EDS, XRD, particle size analysis, and others. According to the analyses, the murals were considered to be of a typical soil mural style for Korean Buddhist murals, given that the walls were made of sand and soil and the murals had layers consisting of wall layers and a finishing layer. However, some finishing layer used calcite, while some ground layer used zinc white beneath the thick paint. In addition, there were similar features to those found on the surfaces of oil paintings such as cracks along with the paint layer, high gloss on surfaces, and thick brush strokes in many areas. It was found that the walls on which the murals were painted were made of soil but that the paint layer was created based on the oil painting technique using drying oil. It determined that the murals were painted in a unique painting style that is rarely found in other typical Buddhist murals in Korea.