These reports in 8 parts presents the systems, samples, methods used for
multi-spectral acquisition and spectral reflectance estimation using
filtered tricromatic camera systems, as well as discussions about the
results, comparison of methods.
All are by Francisco H. Imai.
There are links to the full PDF files with each abstract.
- Multi-spectral Image Acquisition and
Spectral Reconstruction using a Trichromatic Digital Camera
System associated with absorption filters.
This report summarizes researches performed to evaluate the
feasibility of using the IBM PRO\3000 Digital Camera System
associated with Kodak Wratten filters to reconstruct the spectral
reflectances of artwork images and analyzes the performance
and discuss possible enhancements.
Download the full PDF(1.8MB)
- Part II: Technical Approach.
This report summarizes the technical approach using linear
and non-linear iterative models in order to predict the spectral
reflectance from the digital counts of a trichromatic Digital Camera System
associated with absorption filters.
Download the full PDF(400KB)
- Part III: Samples and Spaces.
This part reports the experimental procedure characterizing
the samples and comparing spaces applied to predict the spectral
reflectance from the eigenvectors.
Download the full PDF(150KB)
- PART IV Target imaging and digital
counts processing.
This part describes the experimental setting and imaging
systems used to capture the targets specified in Part III.
Download the full PDF(80KB)
- PART Va: Spectral reconstruction in
reflectance space: Target I.
This part describes the simulation performed to reconstruct
the spectral reflectance of Macbeth ColorChecker, in reflectance space
using several combinations of filters and trichromatic signals. It also
reports the colorimetric and spectral accuracy of the reconstructions, as
well as the metameric index.
Download the full PDF(215KB)
- PART Vb Spectral reconstruction in
reflectance space: Targets II and III.
This part describes the simulation performed to reconstruct
the spectral reflectance of painting targets in reflectance space using
several combinations of filters and trichromatic signals. It also reports
the colorimetric and spectral accuracy of the reconstructions, as well as
the metameric index.
Download the full PDF(106KB)
- PART VI Spectral reconstruction in
Kubelka-Munk space.
This part describes some of the significant simulations
performed to reconstruct the spectral reflectance of three targets, in K/S
space using several combinations of filters and trichromatic signals. It
also reports the colorimetric and spectral accuracy of the reconstructions,
as well as the metameric index.
Download the full PDF(147KB)
- PART VII Spectral reconstruction
in the new empirical space.
This part describes some of the significant simulations
performed to reconstruct the spectral reflectance of three targets, in the
new empirical space using several combinations of filters and trichromatic
signals. It also reports the colorimetric and spectral accuracy of the
reconstructions, as well as the metameric index.
Download the full PDF(320KB)
- PART VIII General Discussion.
This part describes the results obtained in the simulations
and experiments reported in Parts II and III of this report
Download the full PDF(66KB)
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