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# Computer Aided Colourisation
- URL: https://www.protein.xyz/computer-aided-colourisation/
- Published: 2005-03-11T18:43:45.000Z
- Updated: 2016-06-13T20:18:42.000Z
- Description: Three Computer Science researchers The Hebrew University Jerusalem have developed a new computer aided technique of adding color…
- Author: Protein
- Tags: Seeds, #protein, #Import 2024-06-11 13:21

Three Computer Science researchers The Hebrew [University](http://www.cs.huji.ac.il/?ref=protein.xyz) Jerusalem have developed a new computer aided technique of [adding color](http://www.cs.huji.ac.il/~yweiss/Colorization/?ref=protein.xyz) to a monochrome image or movie; a typically tedious, time-consuming, and expensive task. Colorization is a computer-assisted process of adding color to a monochrome image or movie. The process typically involves segmenting images into regions and tracking these regions across image sequences. Neither of these tasks can be performed reliably in practice; consequently, colorization requires considerable user intervention and remains a tedious, time-consuming, and expensive task.

![](http://www.cs.huji.ac.il/~yweiss/Colorization/gray/hair_m.png)

**Marked B/W image**

![](http://www.cs.huji.ac.il/~yweiss/Colorization/gray/hair_res.png)

**Result** In this paper we present a simple colorization method that requires neither precise image segmentation, nor accurate region tracking. Our method is based on a simple premise: neighboring pixels in space-time that have similar intensities should have similar colors. We formalize this premise using a quadratic cost function and obtain an optimization problem that can be solved efficiently using standard techniques. In our approach an artist only needs to annotate the image with a few color scribbles, and the indicated colors are automatically propagated in both space and time to produce a fully colorized image or sequence. We demonstrate that high quality colorizations of stills and movie clips may be obtained from a relatively modest amount of user input. [read more](http://www.cs.huji.ac.il/~yweiss/Colorization/?ref=protein.xyz) link via newstoday.com