• Resources Recycling
• /
• v.19 no.6
• /
• pp.86-92
• /
• 2010

In the many kind of construct-material, the concrete which has the high-strength and a durability is sufficient to use with structure-material. but the color of concrete is very monotony, so generally concrete isn't used the out surface. although color concrete is a method of expressing surface, the combination of pigment and cement cause many physical problem such as efflorescence phenomenon, strength degradation and so on. In this study, It attempt to develop the black mortar using the industrial granulated blast furnace slag and to evaluate basic physical properties compare with general color concrete to solve the color concrete problem. The result of experiment showed that the flow dropped mixing of pigment. but flow increased in proportion to the mixing rate in occasion of mortar that mix granulated blast furnace sla and black mortar which was made granulated blast furnace slag has more visible black color than any mortar.

• Journal of the Korean Crystal Growth and Crystal Technology
• /
• v.30 no.4
• /
• pp.156-161
• /
• 2020

Recently, as there has been growing demand for aesthetic quality in structural materials, the development of excellent color cement concrete having good coloration properties has become a requirement. This study is designed to analyze the basic physical properties of mortar and the properties of keeping the coloration under an ultraviolet ray accelerated weathering test environment according to changes in the mixing ratio between carbon black and iron oxide used as colorants. The test results show that the use of carbon black and iron oxide reduces the initial flow by 6.3~17.2 % and the air content by 3.5~31.5 % but increases the unit volume weight by 3.4~5.5 %, compared to ordinary Portland cement (OPC). In addition, the study shows that the addition of iron oxide increases the self drying shrinkage. So, caution needs to be taken on the workability of the concrete. The brightness value L^⁎ represented by black showed the most excellent black colour when carbon black 3 % and iron oxide 5 % are added. According to UV accelerated weatherproof test, the brightness value L^⁎ was found to increase in all experiment specimens by 4.28~11.97 %, and the color change by UV was found to be higher for the case where carbon black colorant was not used. Therefore, in terms of color revelation characteristics, the case using carbon black 3 % and iron oxide 5 % was found to show the best black color.

• Proceedings of the KAIS Fall Conference
• /
• 2012.05a
• /
• pp.340-343
• /
• 2012

본 연구는 적외선 반사율 특성을 갖는 세라믹 블랙안료의 개발이며, 기능성안료를 건축내외장재에 적용하여 도심열섬현상 방지 및 에너지 효율을 높이는데 목적을 두고 있다. 세라믹안료의 색상은 Black을 합성하였으며, 각각 적외선 반사율과 내산성, 내열성 시험을 하여 색상변화를 측정하였다. 태양에너지의 측정파장영역 190~2000nm에서 TSR은 35.27%로 나타났으며, 내산성 시험 및 내열성 시험의 결과 거의 변색되지 않은 것을 알 수 있었다.

• Proceedings of the Korean Society of Dyers and Finishers Conference
• /
• 2009.11a
• /
• pp.41-42
• /
• 2009

천연가죽 제조 공정에서 유해성 금속성 성분인 크롬이 전혀 함유되지 않은 비크롬 가죽을 제조한 후에 염색 공정에서 다색성 염료인 오배자와 소목을 각각 원료피 무게대비 5%를 사용하고, 매염제를 2~3% 사용하여 염료의 흡착성 증대, 음이온성 가지제 10~12%를 사용하여 가죽에 유연성 및 매염제의 표면 흡착성 증대를 통해서 천연염료에는 존재하지 않는 블랙색상의 가죽을 제조하였다.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2015.05a
• /
• pp.94-95
• /
• 2015

In this research is an examined the fundamental characteristics of color quantization of color mortar in according to the liquid carbon black. If the mortar mixed with liquid carbon black, and is excellent in color developing property as compared to existing powdered black pigment, compressive strength was excellent value in the range of less than 1%.

• Journal of the Korea Institute of Building Construction
• /
• v.13 no.6
• /
• pp.627-633
• /
• 2013

This paper presents the result of a mock-up test and field application of concrete that is black in color thanks to the application of superplasticizer containing carbon amino silica black (CASB-SP). Mock-up specimen with a size of $3000{\times}1500{\times}40$ mm was fabricated with black concrete applying 0.5% of CSAB-SP with 27 MPa. After dividing the zone in wall mock-up specimen, three different water repelling agents were applied to verify its effect of efflorescence prevention. It was found that the use of CASB-SP with 0.5% made the black concrete develop a highly clear black color, and the epoxy type water repelling agent had better performance in efflorescence prevention. Based on mock-up test, field application was conducted with bridge member. It was also found that the application of CASB-SP showed favorable results in black color development.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2019.10a
• /
• pp.1016-1018
• /
• 2019

흑백 1채널 이미지를 3 채널 이미지로 색상화하고 Super-Resolution하여 의미 있는 정보 얻도록 한다. CCTV, 군사용 카메라, 차량용 블랙박스 등 많은 분야에서 주간에 촬영된 영상은 컬러 이미지로 많은 정보를 얻을 수 있다. 하지만 야간에 촬영된 영상은 빛이 없어서 영상에서 정보를 얻기가 원활하지 않다. 따라서 DCGAN을 통해 단일 채널의 흑백 이미지를 3채널의 색상화 이미지로 만들고, Super-Resolution 기술을 적용해서 해상도를 높여 가시광선이 없는 야간이나 어두운 공간에서도 의미있는 영상을 얻을 수 있도록 한다.

• The Journal of the Convergence on Culture Technology
• /
• v.10 no.3
• /
• pp.199-207
• /
• 2024

Today, AI image creation technology is being expanded and utilized across industries. Accordingly, various AI image creation programs optimized for the fashion industry are being developed and commercialized. In this study, we compared and analyzed the visual characteristics of fashion images created by AI image creation programs such as Playground, Midjourney, and The New Black to identify the characteristics of each program and point out areas where each program can be used and problems. The results are as follows: First, while Playground and Midjourney intuitively applied the contents of the command to create images that were different from actual fashion trends, Dannew Black created images that were relatively similar to fashion trends. Second, while Playground separates or combines images corresponding to the command content, Midjourny tends to create new images by adding and fusing various details. Third, in Playground, colors not included in the command appear randomly, and in The New Black, colors not included in the command appear coordinated, and Midjourney generates the color specified in the command relatively accurately. In conclusion, Midjourney can be used when seeking inspiration for developing unique and creative fashion designs, and The New Black can be helpful in referencing fashion trends or fashion styling. On the other hand, playgrounds can be somewhat confusing when it comes to color creation, so this is something to be careful about. It is expected that AI image creation tools can be used more efficiently in fashion design development.

• Journal of the Korea Society of Computer and Information
• /
• v.15 no.3
• /
• pp.27-35
• /
• 2010

Accurately extracting skin color regions is very important in various areas such as face recognition and tracking, facial expression recognition, adult image identification, health-care, and so forth. In this paper, we evaluate the performances of several skin color detection algorithms in indoor environments by changing the distance between the camera and the object as well as the background colors of the object. The distance is from 60cm to 120cm and the background colors are white, black, orange, pink, and yellow, respectively. The algorithms that we use for the performance evaluation are Peer algorithm, NNYUV, NNHSV, LutYUV, and Kimset algorithm. The experimental results show that NNHSV, NNYUV and LutYUV algorithm are stable, but the other algorithms are somewhat sensitive to the changes of backgrounds. As a result, we expect that the comparative experimental results of this paper will be used very effectively when developing a new skin color extraction algorithm which are very robust to dynamic real environments.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.39 no.1
• /
• pp.1-11
• /
• 2021

This paper presents a procedure to extract lane line models using a set of proposed methods. Firstly, an image warping method based on homography is proposed to transform a target image into an image which is efficient to find lane pixels within a certain region in the image. Secondly, a method to use the combination of the results of edge detection and HSL (Hue, Saturation, and Lightness) transform is proposed to detect lane candidate pixels with reliability. Thirdly, erroneous candidate lane pixels are eliminated using a selection area method. Fourthly, a method to fit lane pixels to quadratic polynomials is proposed. In order to test the validity of the proposed procedure, a set of black-box images captured under varying illumination and noise conditions were used. The experimental results show that the proposed procedure could overcome the problems of color-only and edge-only based methods and extract lane pixels and model the lane line geometry effectively within less than 0.6 seconds per frame under a low-cost computing environment.