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		<identifier>8JMKD3MGPBW34M/3CA22GH</identifier>
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		<doi>10.1109/SIBGRAPI.2012.14</doi>
		<citationkey>CasacaGFTPPNP:2012:CoMuPr</citationkey>
		<title>Colorization by Multidimensional Projection</title>
		<format>DVD, On-line.</format>
		<year>2012</year>
		<numberoffiles>1</numberoffiles>
		<size>5392 KiB</size>
		<author>Casaca, Wallace,</author>
		<author>Gomez-Nieto, Erick,</author>
		<author>Ferreira, Cynthia O. L.,</author>
		<author>Tavares, Geovan,</author>
		<author>Pagliosa, Paulo,</author>
		<author>Paulovich, Fernando,</author>
		<author>Nonato, Luis Gustavo,</author>
		<author>Paiva, Afonso,</author>
		<affiliation>ICMC-USP </affiliation>
		<affiliation>ICMC-USP </affiliation>
		<affiliation>PUC-Rio </affiliation>
		<affiliation>PUC-Rio </affiliation>
		<affiliation>UFMS </affiliation>
		<affiliation>ICMC-USP </affiliation>
		<affiliation>ICMC-USP </affiliation>
		<affiliation>ICMC-USP</affiliation>
		<editor>Freitas, Carla Maria Dal Sasso ,</editor>
		<editor>Sarkar, Sudeep ,</editor>
		<editor>Scopigno, Roberto ,</editor>
		<editor>Silva, Luciano,</editor>
		<e-mailaddress>apneto@icmc.usp.br</e-mailaddress>
		<conferencename>Conference on Graphics, Patterns and Images, 25 (SIBGRAPI)</conferencename>
		<conferencelocation>Ouro Preto, MG, Brazil</conferencelocation>
		<date>22-25 Aug. 2012</date>
		<publisher>IEEE Computer Society</publisher>
		<publisheraddress>Los Alamitos</publisheraddress>
		<booktitle>Proceedings</booktitle>
		<tertiarytype>Full Paper</tertiarytype>
		<transferableflag>1</transferableflag>
		<versiontype>finaldraft</versiontype>
		<keywords>image colorization, image processing, multidimensional projection, high dimensional data.</keywords>
		<abstract>Most image colorization techniques assign colors to grayscale images by embedding image pixels into a highdimensional feature space and applying a color pattern to each cluster of high-dimensional data. A main drawback of such an approach is that, depending on texture patterns and image complexity, clusters of similar pixels can hardly be defined automatically, rendering existing methods prone to fail. In this work we present a novel approach to colorize grayscale images that allows for user intervention. Our methodology makes use of multidimensional projection to map high-dimensional data to a visual space. User can manipulate projected data in the visual space so as to further improve clusters and thus the colorization result. Different from other methods, our interactive tool is ease of use while still being flexible enough to enable local color modification. We show the effectiveness of our approach through a set of examples and comparisons against existing colorization methods.</abstract>
		<language>en</language>
		<targetfile>projcolor_final.pdf</targetfile>
		<usergroup>apneto@icmc.usp.br</usergroup>
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