Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Computer-Assisted Method For Colorization Of Black And White Scenes Developed


A novel, computer-assisted method for colorizing black and white images and movies has been developed by researchers at the Hebrew University of Jerusalem’s Benin School of Computer Science and Engineering.

The method is less expensive and time-consuming than earlier colorization methods developed in the late 20th century and which were used to convert to color several classic black-and-white motion pictures such as “Casablanca.”

A major difficulty with colorization has been its labor-intensiveness. For example, in order to colorize a still image an artist typically begins by dividing the image into regions, and then proceeds to assign a color to each region. Unfortunately, there is no fully automatic way to reliably perform this task, since automatic algorithms often fail to correctly identify fuzzy or complex region boundaries, such as the boundary between a subject’s hair and face. Thus, the artist is often left with the task of manually delineating complicated boundaries between regions.

Colorization of movies requires, in addition, tracking regions, as movement occurs across the frames of a particular scene. Again, there have been no fully automatic and reliable region-tracking algorithms for accomplishing this.

Now, Dr. Dani Lischinski, Dr. Yair Weiss and graduate student Anat Levin from the Hebrew University’s Benin School of Engineering and Computer Science have developed a new, interactive, colorization process that requires neither precise, manual, region detection, nor accurate tracking.

The user indicates how each region should be colorized by simply “scribbling” the desired color in the interior of the targeted region, as viewed on a computer screen, instead of tracing its precise boundary.

With these user-supplied “hints,” the software developed by the researchers automatically propagates colors to the remainder of the image and from there to subsequent frames of the movie.

This new technique offers a simple, yet surprisingly effective interactive colorization tool that drastically reduces the amount of input required from the user. In addition to colorization of black-and-white images and movies, the technique is also applicable to selective recoloring, an extremely useful tool for refining digital photographs and for achieving special effects. A provisional patent application has been filed for the process.

The new technology was recently presented at the world’s leading conference on computer graphics, held in Los Angeles, where it generated great interest.

Jerry Barach | alfa
Further information:

More articles from Information Technology:

nachricht Fraunhofer FIT joins Facebook's Telecom Infra Project
25.10.2016 | Fraunhofer-Institut für Angewandte Informationstechnik FIT

nachricht Stanford researchers create new special-purpose computer that may someday save us billions
21.10.2016 | Stanford University

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Light-driven atomic rotations excite magnetic waves

Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion

Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

Im Focus: New Products - Highlights of COMPAMED 2016

COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.

In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

First-time reconstruction of infectious bat influenza viruses

25.10.2016 | Life Sciences

Novel method to benchmark and improve the performance of protein measumeasurement techniques

25.10.2016 | Life Sciences

Amazon rain helps make more rain

25.10.2016 | Life Sciences

More VideoLinks >>>