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I've been experimenting using HDR image as a light source in Blender and rendering with Yafray. I've used the Biotrust tutorial to set up this scene, with additional info about HDR image setup from Blender noob to pro wiki.
HDR(i) stands for High Dynamic Range (imaging). Normally digital images, eg like jpg's, are just using whole numbers between 0 and 255 to represent one of the RGB colors, this gives about (256*256*256) 16777216 different colors. Such images are also called LDR (Low Dynamic Images). HDR images are using decimal (floating point) numbers to represent their values, and gives a lot more information about the image. That would be like using a value between 0 and 4294967296 to represent just one of the RGB colors.
With digital image processing programs (eg. photoshop or cinepaint) this gives a lot of editing opportunities. It will bring colors out from even quite dark areas of the image. This is why HDR images often are so colorful.
HDR images in computer rendered images (and movies) are for this reason used as light source (like in my image above), and gives the scene a much better and natural lightening of rendered objects. This is especially useful when rendered object are mixed with real images. The HDR image used in scenes are therefore taken from reflections from a Chrome ball where the scene is to be rendered. This technique is called light probening.
HDR images can also be produced by taking several pictures of the same scene using different exposures and composing them together. In this way details in both the bright and dark areas of an image can be seen. Try to search flickr with the keyword 'hdr', and you will discover a whole new world of digital images.
The hdr image used in this rendering was taken from Paul Debevec's homepage.
(please add comments, I am after all a noob at this subject.....)
Added: 4. jan. 2007, another experiment similar to this found on flickr: HDR Balls.
From the St. Louis Car Company Collection, University Archives, Department of Special Collections, Washington University in St. Louis Libraries.
Job# 1281: Los Angeles Railway Co.
Please don't use this image on websites, blogs or other media without my explicit permission. © All rights reserved
Dutch postcard.
The founding father of Dutch-language rock and roll, Peter Koelewijn (1940), has his 85th birthday today!. His most famous song is 'Kom van dat dak af', which he recorded with the Rockets in 1960. It is still one of the best Dutch language songs. Koelewijn is also a successful producer and songwriter for other Dutch artists.
Peter Koelewijn was born on 29 December 1940 in in the southern Dutch city of Eindhoven. He was the son of a fishmonger. At the age of thirteen, he received his first guitar. In 1957, he started writing his first songs in English. He started his first band at secondary school with guitarists Karel Jansen and Roelof Egmond and singer Anneke Grönloh, who would become a pop legend in the Netherlands herself. Later on, Harry van Hoof, who later became a famous conductor, and drummer Peter van der Voort, joined the band. Around the same time, Grönloh left the band.
In 1959 the band, now called 'Peter and his Rockets', was joined by saxophone player Klaus Buchholz and bass guitarist Karel Jansen. In December, the band recorded 'Kom Van Dat Dak Af' for record company Bovema. The combination of American rock and roll and Dutch lyrics was revolutionary at the time. In May 1960, 'Kom Van Dat Dak Af' was a massive success in both the Netherlands and Belgium. Koelewijn, who moved on to grammar school, was told by his parents that he had to finish his schooling. Peter and His Rockets signed at Philips. Follow-up singles 'Laat Me Los' (Let Me Go) and 'Marijke' charted lower. By 1967 Koelewijn disbanded the Rockets to focus on writing and producing for other artists; he also hosted radio shows.
Source: Wikipedia.
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From the St. Louis Car Company Collection, University Archives, Department of Special Collections, Washington University in St. Louis Libraries.
Job # 888: Jacksonville Traction Co., Jacksonville, FL
District Attorney Craig Watkins along with his Elderly Abuse Unit staff speaks to a crowd at the Caruth Haven Center on the prosecutions of individuals that have committed heinous crimes against the elderly.
A meetup on Open Source for the Technology community across government was hosted in London by the Government Digital Service on 26 September 2017.
Source: en.wikipedia.org/wiki/Monument_Valley
Monument Valley (Navajo: Tsé Biiʼ Ndzisgaii, pronounced [tsʰépìːʔ ǹtsɪ̀skɑ̀ìː], meaning "valley of the rocks") is a region of the Colorado Plateau characterized by a cluster of sandstone buttes, with the largest reaching 1,000 ft (300 m) above the valley floor. The most famous butte formations are located in northeastern Arizona along the Utah–Arizona state line. The valley is considered sacred by the Navajo Nation, the Native American people within whose reservation it lies.
Monument Valley has been featured in many forms of media since the 1930s. Famed director John Ford used the location for a number of his Westerns. Film critic Keith Phipps wrote that "its five square miles [13 km2] have defined what decades of moviegoers think of when they imagine the American West".
Sourc: navajonationparks.org/navajo-tribal-parks/monument-valley/
History
Before human existence, the Park was once a lowland basin. For hundreds of millions of years, materials that eroded from the early Rock Mountains deposited layer upon layer of sediment which cemented a slow and gentle uplift, generated by ceaseless pressure from below the surface, elevating these horizontal strata quite uniformly one to three miles above sea level. What was once a basin became a plateau.
Natural forces of wind and water that eroded the land spent the last 50 million years cutting into and peeling away at the surface of the plateau. The simple wearing down of altering layers of soft and hard rock slowly revealed the natural wonders of Monument Valley today.
From the visitor center, you see the world-famous panorama of the Mitten Buttes and Merrick Butte. You can also purchase guided tours from Navajo tour operators, who take you down into the valley in Jeeps for a narrated cruise through these mythical formations. Places such as Ear of the Wind and other landmarks can only be accessed via guided tours. During the summer months, the visitor center also features Haskenneini Restaurant, which specializes in both native Navajo and American cuisines, and a film/snack/souvenir shop. There are year-round restroom facilities. One mile before the center, numerous Navajo vendors sell arts, crafts, native food, and souvenirs at roadside stands.
Additional Foreign Language Tags:
(United States) "الولايات المتحدة" "Vereinigte Staaten" "アメリカ" "米国" "美国" "미국" "Estados Unidos" "États-Unis" "ארצות הברית" "संयुक्त राज्य" "США"
(Arizona) "أريزونا" "亚利桑那州" "אריזונה" "एरिजोना" "アリゾナ州" "애리조나" "Аризона"
(Utah) "يوتا" "犹他州" "יוטה" "यूटा" "ユタ州" "유타" "Юта"
(Monument Valley) "وادي النصب التذكاري" "纪念碑谷" "Vallée des monuments" "מוניומנט ואלי" "स्मारक घाटी" "モニュメントバレー" "모뉴먼트 밸리" "Долина Монументов" "Valle de los Monumentos"
Source: UCL Institute of Archaeology Collections, Air Survey Photographs Box: 245 (UCL0093558); Item: AP1804-29
Type: Safety negative Kodak PLUS-X Pan Professional 6057 (3x2) (original Canister film)
Date: 1938-05-11
Container information: Iraq Hatra [Negatives of archaeological interest]. Details from canister: Panchomatic ref. no. 14B/450. RAF Identification no. A219. Maker's identification no. 8354-12. Date of coating 5 Oct 1937. A.P. 1804. No. 55[B] Squadron. Prints of these negs submittd to A.H.Q. 19 Jul 1938. Details from negs.: First neg. marked: 55A Ruin at al-Hatra 11 May 1938 08.23 F/5'' 6000' Neg. nos. 1 - 38.
Photograph text: #1 A.P. 1804 Hatra/29
Creator: Royal Air Force
All reproduction enquiries must be directed to UCL Institute of Archaeology Collections Manager Ian Carroll i.carroll@ucl.ac.uk
Source:
Guardian Newspapers - Katine Project
www.guardian.co.uk/katine/gallery/2008/dec/11/inside-the-... ( www.guardian.co.uk/katine/gallery/2008/dec/11/inside-the-... )
Source: UCL Institute of Archaeology Collections, Air Survey Photographs Box: 248 (UCL0093561); Item: AP298
Type: Glass Plate (Gelatin Dry Plate Neg(?))
Date: 19181011
Container information: Iraq II 8-10-18 A.P. 298 Hit + Anah 8000ft F.8 1/2; B63 CA 123
Photograph text: B63 CA 123 11-10-18; AP 298
Creator: Royal Air Force
Collection: Likely part of the original deposit of aerial photographs collected by O.G.S. Crawford in cooperation with Royal Air Force
All reproduction enquiries must be directed to UCL Institute of Archaeology Collections Manager Ian Carroll i.carroll@ucl.ac.uk
Source: en.wikipedia.org/wiki/Oslo
Oslo is the capital and most populous city of Norway. It constitutes both a county and a municipality. During the Viking Age the area was part of Viken, the northernmost Danish province. Oslo was founded as a city at the end of the Viking Age in the year 1040 under the name Ánslo, and established as a kaupstad or trading place in 1048 by Harald Hardrada. The city was elevated to a bishopric in 1070 and a capital under Haakon V of Norway around 1300. Personal unions with Denmark from 1397 to 1523 and again from 1536 to 1814 reduced its influence. After being destroyed by a fire in 1624, during the reign of King Christian IV, a new city was built closer to Akershus Fortress and named Christiania in the king's honour. It was established as a municipality (formannskapsdistrikt) on 1 January 1838. The city functioned as the capital of Norway during the 1814–1905 union between Sweden and Norway. From 1877, the city's name was spelled Kristiania in government usage, a spelling that was adopted by the municipal authorities only in 1897. In 1925 the city, after incorporating the village retaining its former name, was renamed Oslo. In 1948 Oslo merged with Aker, a municipality which surrounded the capital and which was 27 times larger, thus creating the modern, vastly enlarged Oslo municipality.
Oslo is the economic and governmental centre of Norway. The city is also a hub of Norwegian trade, banking, industry and shipping. It is an important centre for maritime industries and maritime trade in Europe. The city is home to many companies within the maritime sector, some of which are among the world's largest shipping companies, shipbrokers and maritime insurance brokers. Oslo is a pilot city of the Council of Europe and the European Commission intercultural cities programme.
Oslo is considered a global city and was ranked "Beta World City" in studies carried out by the Globalization and World Cities Study Group and Network in 2008. It was ranked number one in terms of quality of life among European large cities in the European Cities of the Future 2012 report by fDi magazine. A survey conducted by ECA International in 2011 placed Oslo as the second most expensive city in the world for living expenses after Tokyo. In 2013 Oslo tied with the Australian city of Melbourne as the fourth most expensive city in the world, according to the Economist Intelligence Unit (EIU)'s Worldwide Cost of Living study. Oslo was ranked as the 24th most liveable city in the world by Monocle magazine.
As of 27 February 2020, the municipality of Oslo had a population of 693,491, while the population of the city's urban area of 4 November 2019 was 1,019,513. The metropolitan area had an estimated population of 1.71 million. The population was increasing at record rates during the early 2000s, making it the fastest growing major city in Europe at the time. This growth stems for the most part from international immigration and related high birth rates, but also from intra-national migration. The immigrant population in the city is growing somewhat faster than the Norwegian population, and in the city proper this is now more than 25% of the total population if immigrant parents are included.
Source: en.wikipedia.org/wiki/Frogner_Park
Frogner Park (Norwegian: Frognerparken) is a public park located in the borough of Frogner in Oslo, Norway, and is historically part of Frogner Manor. The manor house is located in the south of the park, and houses the Oslo City Museum. Both the park, the entire borough of Frogner as well as Frognerseteren derive their names from Frogner Manor.
Frogner Park contains, in its present centre, the Vigeland installation (Norwegian: Vigelandsanlegget; originally called the Tørtberg installation), a permanent sculpture installation created by Gustav Vigeland between 1924 and 1943. Although sometimes referred to in English as the "Vigeland (Sculpture) Park," the Vigeland installation is not a separate park, but the name of the sculptures within Frogner Park. The sculpture park consists of sculptures as well as larger structures such as bridges and fountains.
The park of Frogner Manor was historically smaller and centered on the manor house, and was landscaped as a baroque park in the 18th century by its owner, the noted military officer Hans Jacob Scheel. It was landscaped as a romantic park in the 19th century by then-owner, German-born industrialist Benjamin Wegner. Large parts of the estate were sold to give room for city expansion in the 19th century, and the remaining estate was bought by Christiania municipality in 1896 and made into a public park. It was the site of the 1914 Jubilee Exhibition, and Vigeland's sculpture arrangement was constructed from the 1920s. In addition to the sculpture park, the manor house and a nearby pavilion, the park also contains Frognerbadet (the Frogner Baths) and Frogner Stadium. The Frogner Pond is found in the centre of the park.
Frogner Park is the largest park in the city and covers 45 hectares; the sculpture installation is the world's largest sculpture park made by a single artist. Frogner Park is the most popular tourist attraction of Norway, with between 1 and 2 million visitors each year, and is open to the public at all times. Frogner Park and the Vigeland installation (Norwegian: Frognerparken og Vigelandsanlegget) was protected under the Heritage Act on 13 February 2009 as the first park in Norway.
Source: www.visitoslo.com/en/product/?TLp=181601
Sculpture park in the Frogner Park with more than 200 sculptures by Gustav Vigeland (1869–1943) in bronze, granite and cast iron, including The Angry Boy (Sinnataggen in Norwegian), The Monolith (Monolitten) and The Wheel of Life (Livshjulet).
Vigeland was also responsible for the design and architectural outline of the park, which is one of Norway's top tourist attractions, with more than one million annual visitors.
The park is free to enter and open all year round, 24 hours a day.
Source: livinghistories.newcastle.edu.au/nodes/view/48453
This image was scanned from a photograph in the University's historical photographic collection held by Cultural Collections at the University of Newcastle, NSW, Australia.
If you have any information about this photograph, or would like a higher resolution copy, please contact us.
Great source of support, flexibility & comfort for pregnant women in need of a good nights sleep - bit.ly/1dn4eHQ #pregnancy #pillow
Source: UCL Institute of Archaeology Collections, Air Survey Photographs Box: 250 (UCL0093563); Item: AP554
Type: Glass Plate (Gelatin Dry Plate Neg(?))
Date: 19190124
Container information: Iraq III C.A 158.Nimrud 24-1-19 8000ft F8 1/2'' 554; A.63C.A.158
Photograph text: A.63C.A.158. 24.1.19; AP 554
Creator: Royal Air Force
Collection: Likely part of the original deposit of aerial photographs collected by O.G.S. Crawford in cooperation with Royal Air Force
All reproduction enquiries must be directed to UCL Institute of Archaeology Collections Manager Ian Carroll i.carroll@ucl.ac.uk