Color Impact 2023 was a great success. These pages are left here for archival purposes.
We hope to see you at a future Color Council meeting! Our next conference in June 2025.
June 11-15, 2023
Rochester Institute of Technology, Rochester, NY, USA
Activity and Poster Presenter - Leah Humenuck
Leah Humenuck, Researcher
Beyond RGB: Low-Barrier-to-Entry Multispectral Imaging for Color-Accurate Art Documentation and Reproduction
Monday 4:30 - 5:30
Beyond RGB is a low-barrier to entry multispectral system built for color-accurate cultural heritage documentation and reproduction. Historically, multispectral imaging has been high cost and requires specialist training which has limited the use of this technology for many small to mid-sized cultural heritage institutions. Mixed in with these limitations, traditional photo documentation can end up requiring post processing, which is subjective to the person performing it. A solution to these challenges is found by pairing an RGB camera with LED lights to create a multispectral system. This system uses a prosumer RGB camera, LED lights, and an open-access multispectral image processing software designed by RIT software engineering students. This process uses optimized LED recipes to image artwork in two captures, allowing for efficient workflow. The result is a color-accurate master file, also containing spectral information regarding the artwork. This demonstration would show the setup and imaging process as well as a walkthrough of the image processing software.
Comparison of Mobile Phone Cameras and Prosumer Cameras to Produce High Dynamic Range Images for Cultural Heritage Documentation within a Multispectral Imaging System (Poster)
The capability for a camera to produce a high dynamic range (HDR) image is based upon its capture of luminance within a scene. The wide-ranging luminance within a scene is an important part of cultural heritage documentation in order to appropriately capture an object as it appears. This is currently a challenge for traditional capture of some cultural heritage items. The inclusion of HDR imaging as part of the documentation process is a solution to this challenge. This research presents the current progress of comparison of mobile phone cameras and prosumer cameras to produce HDR images for cultural heritage documentation within a multispectral imaging system and software, Beyond RGB, which was designed at Rochester Institute of Technology. The results from this research will be used in the following assessments of the cameras: linearity over a wide range of exposures; response functions; color transformation quality or accuracy for colorimetry; comparison of dynamic range for color reproduction quality; and evaluation of exposure fusion techniques with respect to the dynamic range of the camera.
Bio
The Inter-Society Color Council advances the knowledge of color as it relates to art, science, industry and design.
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