• Home
  • About Us
  • Contact Us
  • Privacy Policy
  • Special Offers
Business Intelligence Info
  • Business Intelligence
    • BI News and Info
    • Big Data
    • Mobile and Cloud
    • Self-Service BI
  • CRM
    • CRM News and Info
    • InfusionSoft
    • Microsoft Dynamics CRM
    • NetSuite
    • OnContact
    • Salesforce
    • Workbooks
  • Data Mining
    • Pentaho
    • Sisense
    • Tableau
    • TIBCO Spotfire
  • Data Warehousing
    • DWH News and Info
    • IBM DB2
    • Microsoft SQL Server
    • Oracle
    • Teradata
  • Predictive Analytics
    • FICO
    • KNIME
    • Mathematica
    • Matlab
    • Minitab
    • RapidMiner
    • Revolution
    • SAP
    • SAS/SPSS
  • Humor

Researchers detail AI that de-hazes and colorizes underwater photos

December 31, 2019   Big Data
 Researchers detail AI that de hazes and colorizes underwater photos

Ever notice that underwater images tend to be be blurry and somewhat distorted? That’s because phenomena like light attenuation and back-scattering adversely affect visibility. To remedy this, researchers at Harbin Engineering University in China devised a machine learning algorithm that generates realistic water images, along with a second algorithm that trains on those images to both restore natural color and reduce haze. They say that their approach qualitatively and quantitatively matches the state of the art, and that it’s able to process upwards of 125 frames per second running on a single graphics card.

The team notes that most underwater image enhancement algorithms (such as those that adjust white balance) aren’t based on physical imaging models, making them poorly suited to the task. By contrast, this approach taps a generative adversarial network (GAN) — an AI model consisting of a generator that attempts to fool a discriminator into classifying synthetic samples as real-world samples — to produce a set of images of specific survey sites that are fed into a second algorithm, called U-Net.

The team trained the GAN on a corpus of labeled scenes containing 3,733 images and corresponding depth maps, chiefly of scallops, sea cucumbers, sea urchins, and other such organisms living within indoor marine farms. They also sourced open data sets including NY Depth, which comprises thousands of underwater photographs in total.

Post-training, the researchers compared the results of their twin-model approach to that of baselines. They point out that their technique has advantages in that it’s uniform in its color restoration, and that it recovers green-toned images well without destroying the underlying structure of the original input image. It also generally manages to recover color while maintaining “proper” brightness and contrast, a task at which competing solutions aren’t particularly adept.

It’s worth noting that the researchers’ method isn’t the first to reconstruct frames from damaged footage. Cambridge Consultants’ DeepRay leverages a GAN trained on a data set of 100,000 still images to remove distortion introduced by an opaque pane of glass, and the open source DeOldify project employs a family of AI models including GANs to colorize and restore old images and film footage. Elsewhere, scientists at Microsoft Research Asia in September detailed an end-to-end system for autonomous video colorization; researchers at Nvidia last year described a framework that infers colors from just one colorized and annotated video frame; and Google AI in June introduced an algorithm that colorizes grayscale videos without manual human supervision.

Let’s block ads! (Why?)

Big Data – VentureBeat

colorizes, dehazes, Detail, photos, researchers, underwater
  • Recent Posts

    • Researchers propose Porcupine, a compiler for homomorphic encryption
    • What mean should I use for this exemple?
    • Search SQL Server error log files
    • We were upgraded to the Unified Interface for Dynamics 365. Now What?
    • Recreating Art – the unexpected way
  • Categories

  • Archives

    • January 2021
    • December 2020
    • November 2020
    • October 2020
    • September 2020
    • August 2020
    • July 2020
    • June 2020
    • May 2020
    • April 2020
    • March 2020
    • February 2020
    • January 2020
    • December 2019
    • November 2019
    • October 2019
    • September 2019
    • August 2019
    • July 2019
    • June 2019
    • May 2019
    • April 2019
    • March 2019
    • February 2019
    • January 2019
    • December 2018
    • November 2018
    • October 2018
    • September 2018
    • August 2018
    • July 2018
    • June 2018
    • May 2018
    • April 2018
    • March 2018
    • February 2018
    • January 2018
    • December 2017
    • November 2017
    • October 2017
    • September 2017
    • August 2017
    • July 2017
    • June 2017
    • May 2017
    • April 2017
    • March 2017
    • February 2017
    • January 2017
    • December 2016
    • November 2016
    • October 2016
    • September 2016
    • August 2016
    • July 2016
    • June 2016
    • May 2016
    • April 2016
    • March 2016
    • February 2016
    • January 2016
    • December 2015
    • November 2015
    • October 2015
    • September 2015
    • August 2015
    • July 2015
    • June 2015
    • May 2015
    • April 2015
    • March 2015
    • February 2015
    • January 2015
    • December 2014
    • November 2014
© 2021 Business Intelligence Info
Power BI Training | G Com Solutions Limited