December 2018

December 14, 2018June 14, 2019

Open-Source Software Development

Open-Source Software Development:

14 december 2018

There are countless of open source products we use and love at DHI GRAS, and it is very dear to us to give back to the community.

Therefore, we are thrilled to announce that we have just released our new, light-weight tile server Terracotta as free software under an MIT License!

Terracotta directly serves your (cloud-optimized) GeoTIFF files, so you don't need to apply any pre-processing to get your raster data online, and it supports serverless deployment on AWS Lambda, so you can serve your data without any permanent infrastructure.

We urge you to check it out, and look forward to your feedback.

December 13, 2018May 21, 2019

AI for Earth:

13 december 2018

To get more yield with fewer resources, precision is key – especially with a precious resource like water. One way to know how much water crops really need is to measure how much water evaporates from the soil and plant surfaces. This is known as the evapotranspiration (or ET) rate, which helps farmers improve their watering efficiency

Torsten Bondo

Torsten Bondo: Business development manager and senior remote sensing engineer at DHI GRAS in Denmark.

His team aims to use machine learning and satellites to support irrigation development and improve crop water efficiency in Uganda together with the Ugandan geo-information company Geo Gecko. The goal is to contribute to food security, poverty alleviation and economic growth.

The project that been chosen as one of the eleven changemakers to receive the Microsoft and National Geographic AIforEarth Innovation Grant.

December 11, 2018April 23, 2019

Terms of use:

Please read these terms and conditions (the “Terms”) carefully before using our website (“website”). By using this website you signify your consent to these Terms. If you do not agree to the Terms please do not use this website.

OWNERSHIP OF THE WEBSITE

The website is owned and operated by DHI GRAS (referred as we/us in these Terms), a corporation incorporated under the laws of Denmark, having its principal office in Hørsholm.

USER SUBMISSIONS

Any communication or material that you transmit to the website by e-mail or otherwise is, and will be treated as non-confidential and non-proprietary information. Anything you transmit or post may be used by us for any purpose. You are prohibited from posting or transmitting to or from this Site any unlawful, threatening, libellous, defamatory, obscene, pornographic, or other material that may violate any law.

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CONTENT

We take great care in creating and maintaining this website, and in providing accurate and up-to-date content. However, the content of this website is subject to frequent modifications without prior notice. Therefore, we do not guarantee the correct and actual status of said content. The visitors to the website accept our exoneration of any liability whatsoever for the content of the website, the software on the website or for any use made of it.

LIABILITY

Your use of and browsing in this Site is at your own risk. DHI GRAS does not warrant that the software used for this Site, and the information, the on-line applications, or any other services provided by means of this Site are error-free, or that their use will be uninterrupted. DHI GRAS expressly disclaims all warranties related to the above-mentioned subject matter, including, without limitation, those of accuracy, condition, merchantability and fitness for particular purpose. Notwithstanding anything to the contrary in this Site, in no event shall DHI GRAS be liable for any loss of profits, revenues, indirect, special, incidental, consequential, or other similar damages arising out of or in connection with this Site or out of the use of any of the services proposed by means of this Site.

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The Terms addresses your legal rights and obligations and includes important disclaimers and choice of law and forum provisions. Please read carefully. The Terms apply to all websites of DHI Group, including sites for registered users.

USE LICENSE

Please feel free to browse the website. We grant you permission to view this website and to print or download material displayed on the website for your own personal, non-commercial use, provided that you agree to and accept without modification the notices, terms and conditions set forth in this agreement and provided that you keep intact all copyright, trademark and other proprietary notices. You may not however copy, reproduce, republish, upload, transmit or distribute in any way the contents of this website, including the text, images, audio and video for public or commercial purposes, without written permission from us. You are also prohibited from using any content of this website in a frame on any other internet site in any way.

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December 11, 2018February 12, 2019

Privacy policy

Privacy policy:

At DHI GRAS A/S (“DHI GRAS”, “we” or “us”) data protection and confidentiality is a high priority. This privacy policy sets out clear guidelines for how DHI GRAS A/S processes your personal data.

1. DATA CONTROLLER AND CONTACT INFORMATION

This website is operated and owned by:

DHI GRAS A/S
Agern Alle 5
2970 Hørsholm
CVR no: 25621646
gras@dhigroup.com

2. COLLECTION OF PERSONAL DATA

You will always be informed in connection with collection of personal data about you. The personal data collected by us may include, for instance, your name, your email address, IP address and similar identification data, including information about your navigation on the website.

In connection with the submission of your data it will always be stated whether the submission is voluntary or necessary for completing the desired action.

Your personal data is collected in one or several of the below cases:

When you download our software or applications. The legal basis for such processing is the GDPR art. 6(1)(b).
When you sign up for an event. The legal basis for such processing is the GDPR art. 6(1)(b).
When you sign up for an online or physical training course. The legal basis for such processing is the GDPR art. 6(1)(b).
When you download our eBooks. The legal basis for such processing is the GDPR art. 6(1)(b).
When you create an account at DHI webshops. The legal basis for such processing is the GDPR art. 6(1)(b).
When you buy products or services at our webshops. The legal basis for such processing is the GDPR art. 6(1)(b).
When you contact us. The legal basis for such processing is the GDPR art. 6(1)(b) and/or (f). The legitimate interest under (f) is for us to be able to respond to your inquiry.

If you use your email address in more than one of the above cases, your personal data will only be collected and registered in one place. This way your information is already stored when you interact with us, and you will not receive the same marketing material from DHI GRAS more than once.

3. USE OF PERSONAL DATA

We will use personal information only in ways that are compatible with the purposes for which it was collected or subsequently authorised by you. DHI GRAS will take reasonable steps to ensure that personal information is relevant to its intended use, accurate, complete, and current.

Please note, that we will only use your personal data to send marketing material if you have given your explicit consent, unless legislation allows us to contact you without your prior consent.

DHI GRAS keeps statistics about which areas of the site our users visit. This information is used to improve the website. We do use data about how our users navigate, to better understand how our users use our websites and from that we try to improve the user experience. Furthermore, we collect information about what our users, as a unit, prefer. This information is also used to improve the website. We do not sell or otherwise disclose information about how our users navigate and use our website.

4. SHARING OF PERSONAL DATA

We do not transfer your personal data to any third parties, except for what is described in this section, without your consent.

Your personal data may be disclosed to partners of DHI GRAS (providers who deliver services on behalf of DHI GRAS), for example IT service providers, and in relation to sending out newsletters. These partners only process the personal data on behalf of DHI GRAS and in accordance with DHI GRAS’s instructions. Furthermore, your personal data may be shared with business partners, e.g. freight companies, for the delivery of goods you buy in our webshop.

Your personal data may also be shared within the DHI GRAS group with all DHI GRAS affiliated companies. A list of all affiliated companies may be found on the following link: https://www.dhigroup.com/privacy/sharing-of-personal-data#companies

Under specific circumstances and with reference to legislation, it might be necessary to transfer information to public authorities or the police. For example, information may be disclosed to the police in case of suspicion of credit card fraud.

In the case of a re-organization, full or partial sale of the company, any disclosure in such connection will be in accordance with current legislation for the processing of personal data.

If your personal data are transferred to data controllers or data processors, which are located in countries outside the EU/EEA not ensuring an adequate level of data protection, such transfers will be adequately safeguarded by DHI GRAS A/S, e.g. via the EU Commission’s Standard Contractual Clauses. Please contact us if you wish further information.

Further, we explain how we use the personal data that you leave and/or provide when you visit our websites or when you interact with us with various business relations.

5. DELETION OF PERSONAL DATA

We will delete your personal data when we no longer need to process them in relation to one or more of the purposes set out above. However, the data may be processed and stored for a longer period in anonymized form.

We take appropriate measures to ensure that we process and store your personal data based on:

as a minimum for the time period in which we deliver a service to you, in accordance with law, contract, or our legal obligations,
or as long as the data are necessary in order for the purposes for which they are collected, or longer if it is required by contract, applicable law, or for statistical purposes governed by appropriate security measures.

6. COOKIES

We use cookies on our website. You can read more about the use of cookies in our Cookie Policy, which you can find on the following link: https://www.dhigroup.com/cookie-page

7. SECURITY

We have implemented security measures to ensure that our internal procedures meet our high security policy standards. For example, we use encryption. Further, we strive to ensure the ongoing confidentiality, integrity, availability and resilience when processing your personal data. In the event of physical or technical incidents, we make every effort to restore the availability and access to your personal data in a timely manner. We also have processes for assessing and evaluating the effectiveness in order to ensure that the security level is sufficient.

8. YOUR RIGHTS

You are at any time entitled to be informed of the personal data about you that we process, but with certain legislative exceptions. You also have the right to object to the collection and further processing of your personal data including profiling/automated decision-making. Furthermore, you have the right to have your personal data rectified, erased or blocked according to the rules. Moreover, you have the right to receive information about you that you have provided to us, and the right to have this information transmitted to another data controller (data portability).

9. WITHDRAWAL OF CONSENT

You may, at any time, withdraw any consent you have given and we will delete your personal data, unless we can continue the processing based on another purpose. If you wish to withdraw your consent, please contact us at gras@dhigroup.com

10. LINKS TO OTHER WEBSITES ETC.

Our website may contain links to other websites or to integrated sites. We are not responsible for the contents of the websites of other companies or for the practices of such companies regarding the collection of personal data. When you visit other websites, you should read the owners’ policies on the protection of personal data and other relevant policies.

11. CHANGES TO OUR PRIVACY POLICY

We reserve the right to change this privacy policy based on material changes in legislation, new technological solutions, new or improved features, or to improve our websites.

12. AMENDMENT OF DATA ETC.

If you want us to update, amend or delete the personal data that we have recorded about you, or if you wish to get access to the data being processed about you, or if you have any questions concerning the above guidelines, you may contact us at info@dhigroup.com or +45 4516 9200.

You may also write to us at the following address:

DHI GRAS A/S,
Agern Allé 5,
2970 Hørsholm,
Denmark

13. COMPLAINTS

If you wish to appeal against the processing of your personal data, please contact us by email, telephone or letter as indicated above. You may also contact the Data Protection Agency, Borgergade 28, 5., 1300 Copenhagen K, Denmark.

December 11, 2018February 12, 2019

Disclaimer

Disclaimer:

We provide this website as a service and for informational purposes only.
The transmission of this information does not create any form of relationship with us. You should not act upon information provided on this site without seeking our personal assistance. While we have attempted to maintain the information, the software and any other services on this site as accurately as possible, the site may contain errors or omissions for which we disclaim any and all liability. The material and contents posted on this site is provided without warranty of any kind.

We are not responsible for any loss of hardware, software or files, caused by the use of the web site or elements downloaded or used from/on the web site. Hence we make no warranty, that the web site or product or services provided on the web site, either by us or on our behalf (including free software downloads) will meet your requirements or will be uninterrupted, timely, secure or without errors, or that the website or the servers we use are free of viruses or bugs or are fully functional or accurate.

December 5, 2018June 14, 2019

Satellites and offshore wind farms

Satellites and offshore wind farms?:

05 december 2018

A match made in space..

With an increasing number of satellites launched in recent years and advances in the image analysis methods, remote sensing data has proven itself as a cheap and very valuable source of information for planning, construction and monitoring of offshore wind farms (OWF).

Mapping of water depths and seabed dynamics

Understanding of the seabed dynamics is highly relevant when planning to reduce potential risks of exposure of cables and infrastructure. Using advanced image analytics, it is possible to convert raw satellite images into quantified information of the seabed around OWFs. The information can either be derived as absolute water depth values in shallow waters (down to 25m), or as relative information highlighting the geomorphological dynamics, such as estimation of migration rates (metres per year) of sand waves.

DHI has successfully delivered this type of information for OWFs along the US east coast, in the North Sea and in Taiwan Strait.

Detailed monitoring of maintenance activities in near-real-time

As most satellites are in constant orbit around the Earth, they provide a mean for getting situational awareness when needed. Optical and radar (SAR) satellites can provide very detailed imagery down to 25 cm in detail level, and with no HSE risks associated. The images are a highly cost-efficient way of getting updated intel on specific OWF sites, allowing monitoring of specific maintenance or similar activities. The images can be delivered within just hours after the acquisition and thus provide the situational overview in near-real-time.

With the increasing amount of satellites, it is now possible to get a daily snapshot in very high resolution of any OWF site in the world. This capacity will be even further increased within the next few years where sub-daily (down to hourly) imagery is expected.

More accurate and reliable metocean data

For years, satellite remote sensing data has provided incredible value to metocean processes and characteristics in relation to offshore wind. With the use of altimeters and radar sensors mounted on satellites, it is possible to derive several different parameters related to quantification of metocean conditions, such as winds, waves and sea surface height – today this is even possible very close to a coastline.

Not only is satellite data of significant value for wind resource estimation, it also allows for the establishment of an accurate and robust environmental design basis for building offshore wind turbines.

Today, it is common to apply aggregated measurements from different types of satellites and multiple passes in calibration and validation of numerical hydrodynamics and wave models, the so-called hind cast models – in combination with in situ synoptic observations. The outcome of the hind cast models are accurate time series (typically 30-40 years) of metocean data to be used for planning, design, construction and operation of an offshore wind farm.

Such data is readily available on modern metocean data platforms such as DHI’s MetOcean Data Portal, where long term data can be downloaded easily and quickly for subsequent processing and analysis. Before data (e.g. wave data) is downloaded, the data is always instantly validated against satellite data to assure the quality and robustness.

Author: Rasmus Eskerod Borgstrøm (rlb@dhigroup.com)