Image inpainting

Abstract Pada citra digital, sering ditemukan objek yang tidak dikehendakikeberadaannya. Objek tersebut tidak dikehendaki keberadaannyakarena mengganggu tampilan atau terkait permasalahan privasi. Permasalahan privasi ini terjadi pada citra Google Street Viewkarena diambil di tempat publik dan disebarkan ke publik. Olehkarena itu perlu dilakukan penghilangan identitas melaluipenghapusan objek (inpainting). Berbagai penelitian terkait penghapusan objek telah dilakukan.

Powdered micro-cellulose is commonly used in the paper conservation lab for filling small losses, concealing stains and treating other damages on paper. Its neutral pH, general chemical stability and low toxicity, makes powdered cellulose a very reliable and compatible material proved to be suitable for conservation purposes, like infilling and colour matching of the paper support. However, the ageing of this pure powdered cellulose, especially when modified by toasting to adjust its colour, is unknown. Obviously, this toasting gives room for some chemical changes, that’s why conservators should look for possible caveats of its use. To determine the possible limitations of the use of micro-cellulose powder in the long term, some artificially induced degradation tests have been performed. The test results presented in this paper show that the changes occurred are not significant enough to prevent its use in paper conservation.

This postprints presents the articles of the fourth edition of RECH that took place in Split (Croatia) from October 20th to October 21st, 2017 and was jointly organised by members of the Escola Artística e Profissional Árvore, the Faculty of Fine Arts of the University of Lisbon, the Arts Academy of the University in Split, the Catholic University of Portugal, the Cinábrio and in the conservation-restoration field, selected 24 abstracts for communications and 16 abstracts for poster sessions, not all publish here. The titles cover a wide range of topics - from digital options for documentation, diagnosis and treatment, to new solutions and materials for filling and retouching of losses.

Resumo: O estudo que aqui se apresenta foi efetuado no âmbito do curso de doutoramento em Bens Culturais, na especialidade de Pintura, que decorreu na Universidade Católica Portuguesa, subordinado ao tema da qualidade em reintegração cromática. O objetivo do presente trabalho é propôr um sistema para a caracterização das lacunas da superficie pictórica, direccionado específicamente para o processo de reintegração cromática, de modo a que o conservador-restaurador possa ter acesso a uma informação qualitativa e quantitativa mais rigorosa, antes, durante e depois da intervenção. Para o efeito, utilizaram-se imagens fotográficas de uma pintura sobre madeira do século XVI e um sistema de informação geográfica (SIG). Trata-se de um programa informático utilizado no processamento de dados espaciais, o software open-source QGIS. O projeto tem a particularidade de ter sido efetuado em tempo-real, à medida que a intervenção foi decorrendo, como forma de apoio à tomada de decisão. Palavras-chave: caracterização de lacunas, reintegração cromática, SIG, QGIS, tomada de decisão Estudio para la caracterización espacial de lagunas en el proceso de reintegración cromática en la pintura La circuncisión del Niño Jesus Resumen: El estudio que aquí se presenta ha sido realizado en el ámbito del programa de doctorado de Bienes Culturales, en la especialidad de Pintura, que tuvo lugar en la Universidad Católica Portuguesa, bajo el tema de la calidad en reintegración cromática. El objetivo de este estudio es proponer un sistema para la caracterización de las lagunas de la superficie pictórica, por lo que el conservador-restaurador puede tener acceso a la información cualitativa y cuantitativa más precisa antes, durante y después de la intervención. Con este fin, hemos utilizado imágenes fotográficas de una pintura sobre tabla (siglo XVI) y un programa informático, un sistema de información geográfica (SIG), que se utiliza en el procesamiento de datos espaciales, el programa QGIS, de código abierto. El proyecto tiene la particularidad de haber sido hecho en tiempo real, durante la intervención, con el fin de apoyar la tomada de decisiones. Palabras-clave: caracterización de lagunas, reintegración cromática, SIG, QGIS, tomada de decision Study for spatial characterization of losses for the chromatic reintegration process of the painting The Circumcision of Jesus Abstract: The study presented here was conducted in the framework of the doctoral program in Cultural Heritage, specialization in easel paintings, which took place at the Catholic University of Portugal, upon the theme of quality in chromatic reintegration. The aim of this study is to propose a system for the characterization of the losses in the pictorial surface, so that conservator-restorer can have access to qualitative and quantitative accurate information before, during and after the intervention. We used photographic images of a panel painting from the XVI century and a geographical information system (GIS) software used for processing spatial data, the QGIS open source program. The project has the particularity of being done in real time, during the intervention, in order to support the decision-making process.