Color Restoration for Objects of Interest using Robust Image Features

Abstract-Illumination distortion due to uncontrolled lighting can severely degrade the color appearance of a photo. Frequently, the desired colors for objects in a newly taken query image are found in a previously stored database image. Then, the goal is to change the colors in the query image to match the colors in the database image. This paper presents a color restoration system that automatically retrieves a database image which matches the query image, even if the two images are taken from different viewpoints and under different illuminations. Robust features enable both accurate retrieval from the database and efficient sampling of the color differences between the query and database images. A spatially varying color mismatch model is generated, and the colors of the query image are effectively restored

Color in Ancient and Medieval East Asia

With essays by Monica Bethe, Mary M Dusenbury, Shih-shan Susan Huang, Ikumi Kaminishi, Guolong Lai, Richard Laursen, Liu Jian and Zhao Feng, Chika Mouri, Park Ah-rim, Hillary Pedersen, Lisa Shekede and Su Bomin, Sim Yeon-ok and Lee Seonyong, Tanaka Yoko, and Zhao Feng and Long BoColor was a critical element in East Asian life and thought, but its importance has been largely overlooked in Western scholarship. This interdisciplinary volume explores the fascinating roles that color played in the society, politics, thought, art, and ritual practices of ancient and medieval East Asia (ca. 1600 B.C.E.–ca. 1400 C.E.). While the Western world has always linked color with the spectrum of light, in East Asian civilizations colors were associated with the specific plant or mineral substances from which they were derived. Many of these substances served as potent medicines and elixirs, and their transformative powers were extended to the dyes and pigments they produced. Generously illustrated, this groundbreaking publication constitutes the first inclusive study of color in East Asia. It is the outcome of years of collaboration between chemists, conservators, archaeologists, historians of art and literature, and scholars of Buddhism and Daoism from the United States, East Asia, and Europe

Testing and Evaluation of Soil Based Grouts for the Adhesion of Consolidated and Un-Consolidated Painted Lime Plaster at the Mission San José de Tumacácori

The interior decorative painting at Mission San Jose de Tumacácori is a rare survival of late 18th century-early 19th century artistic traditions of northern Sonora and the Kino mission churches. Despite earlier attempts to stabilize these finishes, the original painted lime plaster has continued to detach from the adobe substrate. Previous techniques to stabilize the paintings began with research by J. Rutherford Gettens in 1949-1952 and subsequent attempts in 1984 to reattach detached plaster have proven ineffective. The current research evaluates soil-based injection grouting in order to adhere the loose plaster on the nave and sanctuary walls. Earthen grouts were tested over the more commonly used hydraulic lime grouts in order to consider a more compatible system with the original construction materials. A well-designed earthen grout must be fluid enough to insure full penetration, exhibit low shrinkage and strong bond strength equal to its own cohesive strength for successful repair. Samples of the original adobe, mortar, and plaster were analyzed and local soils were sampled and tested in order to design a grout displaying optimal properties. The test grout was subjected to several geo-technical tests including viscosity, density, shrinkage, and expansion/ bleeding; as well as its hardened properties such as splitting tensile strength, capillary water absorption, water retention and permeability. The selected grout’s performance was finally analyzed with a mock-up assembly composed of friable plaster facsimiles and adobe, simulating 1/2 and 1/4 gaps. Half of the plaster facsimiles were consolidated with nanolime due to their friable nature based on recent parallel research. The research expands current knowledge on the use of earthen grouts for reattachment of earthen and lime plasters on earthen substrates

UV-Vis Luminescence imaging techniques/ Técnicas de imagen de luminiscencia UV-Vis

Ever since its first introduction in the field of conservation, the role of UV-VIS luminescence/fluores-cence (UVL and UVf, respectively) imaging has been expanding.The unique and significant contribution of this technique for investigation of cultural heritage has led to the development of new methodol-ogies and applications. Each chapter in this volume can be read independently. While this means that some repetition may occur between the individual chapters, in particular regarding the explanation of terminology and methodology, such overlap provides interesting op-portunities for cross-comparison of both terminol-ogy and methodology. In addition, it highlights similarities and differences between different situations in the practical applicationFuster López, L.; Stols-Witlox, M.; Picollo, M. (2020). UV-Vis Luminescence imaging techniques/ Técnicas de imagen de luminiscencia UV-Vis. Editorial Universitat Politècnica de València. http://hdl.handle.net/10251/138517EDITORIA

World History for International Studies

Studying change in the course of human history, in different places, through the lens of a diverse set of core themes, World History for International Studies offers readers a set of windows into different debates historians have been conducting. Key themes, such as communication, trade, order, slavery, religion, war, identity, modernity, norms and ecology, are linked to specific world regions, which tell a story about how local ideas and individual contacts developed, started to overlap and became globally understood and used by ever larger groups of people. These themes are brought to life by a diverse set of key primary sources, such as a book, a letter, a medal, a temple and an epic, to showcase how historians have used sources to tell these stories and conduct debates. The book provides an introductory resource into the study of history and includes detailed suggestions for further study

World History for International Studies

Studying change in the course of human history, in different places, through the lens of a diverse set of core themes, World History for International Studies offers readers a set of windows into different debates historians have been conducting. Key themes, such as communication, trade, order, slavery, religion, war, identity, modernity, norms and ecology, are linked to specific world regions, which tell a story about how local ideas and individual contacts developed, started to overlap and became globally understood and used by ever larger groups of people. These themes are brought to life by a diverse set of key primary sources, such as a book, a letter, a medal, a temple and an epic, to showcase how historians have used sources to tell these stories and conduct debates. The book provides an introductory resource into the study of history and includes detailed suggestions for further study

World History for International Studies

Studying change in the course of human history, in different places, through the lens of a diverse set of core themes, World History for International Studies offers readers a set of windows into different debates historians have been conducting. Key themes, such as communication, trade, order, slavery, religion, war, identity, modernity, norms and ecology, are linked to specific world regions, which tell a story about how local ideas and individual contacts developed, started to overlap and became globally understood and used by ever larger groups of people. These themes are brought to life by a diverse set of key primary sources, such as a book, a letter, a medal, a temple and an epic, to showcase how historians have used sources to tell these stories and conduct debates. The book provides an introductory resource into the study of history and includes detailed suggestions for further study