CAT stands for Cromatic Adaptation Transform.
Chromatic adaptation means that the human eye performs an automated white balance. Colour is thus perceived by the human observer quite independently of the colour temperature; a white shirt looks the same white to us under fluorescent light as it does under incandescent lighting, a red rose is similarly red to humans under both lights.
The Cromatic Adaptation Transform (CAT) is a mathematical process in colour processing that simulates the adaptation of colour perception to different light sources. It is based on the natural phenomenon of colour adaptation, in which the human eye adapts to changing light conditions as described above in order to perceive colours consistently. In digital image processing, CAT is used to transform the colours of an image so that they appear constant under different lighting situations such as natural or artificial light.
CAT is used in colour science and image processing to harmonise the colour representation on different devices such as cameras, monitors or printers and to ensure uniform colour perception. For this purpose, the colour values are adapted to the conditions of a reference light source, usually the standard illuminant D65.
The most common CAT models, such as Bradford and von Kries, use different mathematical approaches to calculate the light adjustment. This process is particularly important in digital photography, for the colour calibration of devices and in image processing in order to ensure precise and consistent colour reproduction.
Whether it’s a large global corporation or a small company, the following often applies to designs or redesigns today: we develop everything for digital first.
From now on you can order proofs for metal decor printing on white sheet metal at proof.de: The ICC profile for Fogra60 is Metal-Printing_MPC1_FOGRA60.icc
Peter Jäger is an expert in colour management that reliably works across the boundaries of printers and monitors, web and print – essentially: cross-media.
In recent years, various problems have arisen with our previous proof paper supplier. On the one hand, we sometimes had to wait more than three months for paper deliveries; on the other hand, we sometimes had significant problems with batch-to-batch discrepancies, surface defects and much more. After lengthy deliberations, we decided in December to replace all the paper. We therefore received pallets of new paper at the turn of the year, which we are now gradually incorporating into our production. There will be no hard cut, but the new papers … read more
Shortly after Adobe’s announcement to remove PANTONE colours from their products, PANTONE removed the popular PANTONE Find a Color from their website
Even almost 9 years after the introduction of the successor colour space PSOCoatedV3, ISOCoatedV2 / FOGRA39 is still the most widespread colour space in Europe. We at Proof GmbH count around 200 jobs from time to time for the German Printing and Media Industries Federation, among others. In the last count, proofs in ISOCoatedV2 accounted for around 68% of all proof jobs at our company. This is a clear sign of the continued widespread use of the colour space. ISOCoatedV2: From the classic colour space to the beacon of the … read more
In 2021 proof.de was again Fogra certified including Fogra “Spot cert” certification, i.e. for the display of spot colours such as PANTONE C and U.
Digimarc is a digital watermark that can be used to embed information in images, videos or other media. Digimarc watermarks are invisible to the human eye, but remain recognisable to special software or devices. Digimarc is becoming increasingly popular in the packaging sector in particular, as this technology allows the digits of the EAN barcode and more to be applied invisibly to all areas of the packaging. Digimarc and EAN barcode at the supermarket checkout When scanning at the checkout, the checkout staff do not have to search for the … read more
In the current issue of Fogra News “Fogra Aktuell” Proof GmbH is involved in two places. Firstly, a summary of the Fogra report on our first FOGRA55 certification for seven-colour printing with extended colour space in CMYKOGV appeared. You can also find more information on our FOGRA55 certification on the Fogra website: https://fogra.org/en/press-releases/fogracert-erste-cpc-zertifizierung-fuer-fogra55-cmykogv-330 and on proofing.de: And secondly, there was a report on the completion of the research project for textile digital printing, FOGRA58, in which we were allowed to investigate and test the proof capability of the new textile … read more
This year we once again created proofs for Fogra certification and sent them to Munich-Aschheim for testing. With these proof prints, which we print according to three different proof standards and on three different papers, we point out that we not only deliver excellent proof quality through internal quality controls and checks, but that the quality of our proofs is also measured and confirmed by external experts. We have now had test prints certified by Fogra for the 12th time. We have also been “Spot-cert” certified for the display of … read more