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IEICE TRANSACTIONS on Information

Color Improvement Based on Local Color Transfer in Digital Intermediate of Digital Cinema

Ho-Gun HA, Dae-Chul KIM, Wang-Jun KYUNG, Yeong-Ho HA

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Summary :

In digital cinema, an image goes through many types of processes like scanning, mastering, and digital intermediate. Among them, the digital intermediate process plays a central role because it determines the final color of an image. It edits and changes the colors of the images. However, some color distortions such as color bleeding are generated when editing and changing local colors in an image. In this paper, local color improvement for digital intermediate is proposed based on color transfer. Our method is simple and efficient color improvement that does not requires neither precise image segmentation nor feature matching. To prevent color distortions, a modified color influence map is proposed with color categories. First, the source image is roughly segmented using a color category map, which groups similar colors in color space. Second, the color influence map is modified by assigning different weights to the lightness and chroma components. Lastly, the modified color influence map and color category map filtered with anisotropic diffusion are combined. Experimental results show that the proposed method produces less color distortion in the resulting image.

Publication
IEICE TRANSACTIONS on Information Vol.E98-D No.1 pp.173-179
Publication Date
2015/01/01
Publicized
2014/10/21
Online ISSN
1745-1361
DOI
10.1587/transinf.2014EDP7179
Type of Manuscript
PAPER
Category
Image Processing and Video Processing

Authors

Ho-Gun HA
  Kyungpook National University
Dae-Chul KIM
  Kyungpook National University
Wang-Jun KYUNG
  Kyungpook National University
Yeong-Ho HA
  Kyungpook National University

Keyword