Rijksmuseum Publishes 717 Giga Pixel Photograph of The Night Watch

Tuesday, January 4, 2022
Rijksmuseum Publishes 717 Giga Pixel Photograph of The Night Watch

The Operation Night Watch research team has succeeded in making an extremely detailed photograph of The Night Watch. This 717 gigapixel image is available for viewing on the Rijksmuseum website at rijksmuseum.nl/Nightwatch.

The Operation Night Watch research team has succeeded in making an extremely detailed photograph of The Night Watch. This 717 gigapixel image is available for viewing on the Rijksmuseum website at rijksmuseum.nl/Nightwatch. It is the largest and most detailed photograph of any artwork, and is four times sharper than its predecessor, which the Rijksmuseum published around 18 months ago. This means it is now possible to zoom in even further on minute, pin-sharp particles of pigment in The Night Watch. The photograph was made as part of the research conducted by Operation Night Watch.

This photograph of The Night Watch has a resolution of 717 gigapixels, or 717,000,000,000 pixels, making it the largest-ever digital image of an artwork. Each pixel represents an area of 5 micrometres or 0.005mm square, and the complete composite image is made up of 8,439 individual photographs measuring 5.5cm x 4.1cm. The team used a 100-megapixel Hasselblad H6D 400 MS-camera. Artificial intelligence was used to stitch these smaller photographs together to form the final large image, with a total file size of 5.6 terabytes.

This image is four times as sharp as the photograph of The Night Watch that the Rijksmuseum released on its website in May 2020. That picture was 44.8 gigapixels in size, with each pixel representing an area of 20 micrometres or 0.02mm square. This new image is enabling the scientists involved in Operation Night Watch to study the painting remotely in even greater detail. It will also make it possible to track future ageing processes with even greater accuracy. This photograph is so sharp that neural networks can now be used to rapidly detect similar pigment particles or identify the lead soaps, for example, something that was not possible using the previous photograph.

The depth of field for each individual photograph was just 125 micrometres, or 0.125mm. To ensure that each image was in focus, it was necessary to first scan the surface of the painting using lasers and very accurately calibrate the camera. After each photograph was taken, a neural network was used to check the image for colour and sharpness.

The second phase of Operation Night Watch starts on 19 January 2022, when the first procedures will be be carried out on the painting itself. The first task will be to mount The Night Watch on a new stretcher. This is necessary because of the ‘deformities’ in the canvas, particularly the clearly visible ripples in the upper left corner. While this issue does require immediate attention, it is easily remedied and will not impact on the future of the painting. After this, we will take a step-by-step approach to considering whether other conservation treatments should be conducted.

Operation Night Watch is the biggest and most wide-ranging research and restoration project in the history of Rembrandt’s masterpiece. Its goal is to conserve the painting for the future in the most optimal way possible. Work started in summer 2019, and takes place in a specially designed, transparent glass chamber, making it possible for the visiting public to follow the process. Operation Night Watch takes advantage of the newest and most advanced research technologies and techniques available, and involves collaborations with experts from AkzoNobel – the Rijksmuseum’s main partner for Operation Night Watch – as well as museums, universities, university hospitals and research organisations in the Netherlands and abroad.

AkzoNobel is the main partner of Operation Night Watch.

Operation Night Watch is also made possible in part by The Bennink Foundation, C.L. de Carvalho-Heineken, PACCAR Foundation, Piet van der Slikke & Sandra Swelheim, American Express Foundation, Familie De Rooij, Het AutoBinck Fonds, TBRM Engineering Solutions, Dina & Kjell Johnsen, Familie D. Ermia, Familie M. van Poecke, Bruker Nano Analytics, Henry M. Holterman Fonds, Irma Theodora Fonds, Luca Fonds, Piek-den Hartog Fonds, Stichting Zabawas, Cevat Fonds, Johanna Kast-Michel Fonds, Marjorie & Jeffrey A. Rosen, Stichting Thurkowfonds, The Night Watch Fund, Familie Van Ogtrop Fonds, the City of Amsterdam and the Amsterdam Museum.

 

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