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    Determination of Gloss in Decorative Coated Wood-based Composite Boards by Image Processing Method
    (North Carolina State Univ Dept Wood & Paper Sci, 2025) Katircioglu, Ferzan; Budakci, Mehmet; Kacamer, Serdar
    Ultraviolet (UV)-cured coating and water transfer printing (WTP) are popular organic coating techniques offering aesthetic and functional benefits for wood-based panels. This study considered the gloss change of medium density fiberboard (MDF) panels, which were coated with WTP and UV printing processes. Image processing was used before and after being exposed to some domestic cleaning agents. A carbon fiber-patterned organic finish was applied to the surfaces of the prepared sample panels followed by scrub-testing with various domestic cleaning agents in compliance with Turkish Standards (TS) EN ISO 11998. The image processing based scrubbing tester (IPBST) developed in this study was used for the scrubbing process. Digital images of the samples were captured before and after the scrubbing process, and the Red-Green-Blue (RGB) color model was converted to the Hue-Saturation-Intensity (HSI) model for analysis. The /-channel in the HSI system was used to calculate the average gloss values, which were compared to results from the BYK-Gardner Spectro-Guide 45/0 device. Pearson correlation analysis indicated a robust and statistically significant correlation of 0.71. As a result, the image analysis-based gloss evaluation method has been shown to enable a more comprehensive evaluation of surface quality by providing fast, non-contact, and detailed analysis.
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    Determining Abrasion Resistance of Decorative Coated Wood-Based Panels Using Retinex Model
    (North Carolina State Univ Dept Wood & Paper Sci, 2024) Kacamer, Serdar; Katircioglu, Ferzan; Budakci, Mehmet
    An Image Processing Based Scrub Tester (IPBST) was used to imitate the effect of household chemicals on furniture and decoration elements. For this purpose, 8 mm -thick, bright white, acrylic coated medium density fiberboard (MDF), polyvinyl chloride coated MDF, MDF lam ready -to -use sheets, and cellulosic, polyurethane, acrylic, and water -based paint applied MDF sheets were used. Carbon fiber patterned decorative coating was applied to the prepared sample surfaces using the water transfer printing and ultraviolet printing methods. The surfaces of the samples were scrubbed with various household chemicals in accordance with the Turkish Standard TS EN ISO 11998. In the image processing phase, the images before and after scrubbing were first converted to hue, saturation, and value color space. The relationship between the abrasion measurement method of the proposed IPBST and the abrasion data obtained from the stereo microscope device was examined using the Pearson Correlation analysis. The relationship between both abrasion test methods was positive, very strong, and significant (0.81). Thus, the IPBST can be used as an alternative to industrial test devices as it obtains similar data.
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    Image Processing Based Scrub Tester Design and Production
    (Zagreb Univ, Fac Forestry, 2025) Kacamer, Serdar; Budakci, Mehmet; Katircioglu, Ferzan
    center dot Determining how resistant paint, varnish or coating type materials, applied to wood-based panel surfaces, are to the effects of exposure to household chemicals is important in terms of developing products and providing durable surface coating to users. Every paint or coating type product coming off the production line needs to be tested quickly, and a new direction should be given to the work based on the positive or negative results obtained. Products without quality monitoring are returned by customers due to insufficient performance, resulting in loss of time, labor and materials. In this study, an Image Processing Based Scrub Tester (IPBST) was designed and produced in order to imitate the effect of paint, varnish and coating materials on the surfaces of furniture and decoration elements used in daily life against household chemicals. Unlike its counterparts, with IPBST, the image of each sample is digitally recorded before and after the scrubbing process, thanks to the compact photo booth integrated into the device. Wear, color and brightness change analyses of sample images can be performed with the Surface Flaw Analysis (SFA) method developed using the Matlab Graphical User Interface (GUI) image processing program on a computer integrated into the device. In this way, a 4-in-1 device that can do the job of 4 devices has been provided to the relevant scientific community and industry without the need for different types of industrial test devices.