A metadata platform for visual media. We apply networked metadata to images and video to power discovery, recommendation, and personalization.

About Tagasauris

Metadata makes today’s web work.  Descriptive data provides the foundation for discovery, recommendation, and personalization — almost everything that we rely on the internet to help us with. But today, management believes there is no way to apply accurate metadata to visual media quickly and easily, at web scale. In a world where we share 1.8 billion photos and 432,000 hours of YouTube video every day, this is a problem.

Management believes that Tagasauris has reinvented metadata for visual media. Today, we solve the metadata problem for major content creators like Disney, ABC, AOL, Trunk Archive and Magnum Photos. Our proprietary (and patent-pending) platform focuses on three key areas:

  1. We combine the efforts of humans and computers to apply networked metadata to visual media, at web scale. By applying metadata, we make a piece of visual media “content aware” — we teach a computer what the content of that image or video is.

  2. We use the principles of linked open data and graph theory to store metadata in a semantic database. By doing so, we take our content aware media and we make it “relationship aware” — we teach a computer not only what’s in an image or video, but also how that content relates to the rest of the world.

  3. We integrate our human assisted computing platform with our semantic database to create an evergreen knowledge graph that’s continuously learning and keeping our networked metadata up-to-date.

We have applied our technology to millions of images, resulting in: improved discoverability and increases in traffic, engagement, and sales for our clients. In 2014, we partnered with Disney and ABC to expand this capability to video content. This year we are looking to grow our client base to include a variety of other broadcasters, content creators, publishers, media and creative companies.


Source: KPCB estimates based on publicly disclosed company data, 2014 and YouTube. 

Product & Service

Media Mentions

Team Story

In 2010, on the heels of a successful collaboration with the legendary photography cooperative, Magnum Photos, I began thinking about the possibility of teaching computers to do things with media on the Web. I believe that visual content is the currency of tomorrow's Web, that the shift from hypertext to hypermedia is both inevitable and exciting and, that once computers can understand visual media, a new generation of applications for discovery and visual-first learning will be enabled. Today, these beliefs drive Tagasauris. 

We've spent the last four years developing a computational approach that allows us to backfill the so called "semantic gap" with a layer of structured, contextual, relationship-aware data. This data is persisted in a knowledge base we call mediaGraph. mediaGraph has the potential to interlink the currently impoverished, disparate and siloed descriptions of media across the Web and we believe it can power a new breed of knowledge-centric applications in the world of online multimedia.

Founders and Officers

A innovator and technology leader in digital media and entertainment with specific expertise in crowdsourcing and human computation, audio-visual content and the semantic web

Todd Carter


A innovator and technology leader in digital media and entertainment with specific expertise in crowdsourcing and human computation, audio-visual content and the semantic web

Key Team Members

Danny Nathan

Director of Product & Marketing

Matthew Petrillo

VP Operations

Jan Diolola

Metadata Manager

Raymond Klass

Production Engineer

Silver Oliver

Technical Architect

Paul Wilton

Technical Architect

Julian Everett

VP Engineering

Notable Advisors & Investors

Michael Solomon
Mike Priest
Frank Geshwind
Morris Wheeler
Phil O'Brien
Sharon Middendorf

Advisor, Co-founder / Advisor

Marty Manley
Panos Ipeirotis

Advisor, Co-founder / Science Advisor

Lora Aroyo
Michael Solomon

Advisor, Board Chairman

Frequently Asked Questions

Making an Investment in Tagasauris
How does investing work?

When you complete your investment on SeedInvest, your money will be transferred to an escrow account where an independent escrow agent will watch over your investment until it is accepted by Tagasauris. Once Tagasauris accepts your investment, and certain regulatory procedures are completed, your money will be transferred from the escrow account to Tagasauris in exchange for your shares. At that point, you will be a proud owner in Tagasauris.

What is the difference between preferred equity and a convertible note?

Preferred equity is usually issued to outside investors and carries rights and conditions that are different from that of common stock. For example, preferred equity may include rights that prevent or minimize the effects of dilution or grants special privileges in situations when the company is sold.

A convertible note is a unique form of debt that converts into equity, usually in conjunction with a future financing round. The investor effectively loans money to a startup with the expectation that they will receive equity in the company in the future at a discounted price per share when the company raises its next round of financing.

To learn more about startup investment types check out “How to Choose a Startup Investment” in our academy.

What will I need to complete my investment?

To make an investment, you will need the following information readily available:

  1. Personal information such as your current address and phone number
  2. Employment and employer information
  3. Net worth and income information
  4. Social Security Number or government-issued identification
  5. ABA bank routing number and checking account number (typically found on a personal check or bank statement)

What if I change my mind about investing?

Until a closing occurs, you may cancel your investment at any time, for any reason. You will receive an email when the closing occurs and your shares have been issued. If you have already funded your investment and your funds are in escrow, your funds will be promptly refunded to you upon cancellation. To cancel your investment, please go to your portfolio page.

After My Investment
How can I sell my shares in the future?

Currently there is no market or liquidity for these shares. Right now Tagasauris does not plan to list these shares on a national exchange or another secondary market. At some point Tagasauris may choose to do so, but until then you should plan to hold your investment for a significant period of time before a “liquidation event” occurs. A “liquidation event” is when Tagasauris either lists their shares on an exchange, is acquired, or goes bankrupt.

How do I keep track of this investment?

You can return to SeedInvest at any time to view your portfolio of investments and obtain a summary statement.

Other General Questions
What is this page about?

This is Tagasauris's fundraising profile page, where you can find information that may be helpful for you to make an investment decision in their company. The information on this page includes the company overview, team bios, and the risks and disclosures related to this investment opportunity.

What are the risks of this investment?

This investment is highly speculative and should not be made by anyone who cannot afford to risk the entire investment amount. In addition to these risks, you should carefully consider the specific information and risks disclosed in Tagasauris’s profile.