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Imaging system high dynamic range colorimetric calibration method based on a digital chain
Summary
This study introduces a digital chain measurement method for high dynamic range (HDR) color management in imaging systems. The new calibration technique improves accuracy and resolution for precise color characterization.
Area of Science:
- Imaging Science
- Colorimetry
- Digital Signal Processing
Background:
- High dynamic range (HDR) color management requires accurate calibration between imaging systems and standard radiation.
- Existing calibration methods face challenges in meeting the critical requirements for HDR applications.
Purpose of the Study:
- To propose a novel colorimetric calibration method for imaging systems using digital chain measurement.
- To enhance the accuracy and resolution of color measurement in HDR imaging scenarios.
Main Methods:
- Constructed a HDR colorimetric calibration process model based on an imaging chain, including light source, target reflectance, optical parameters, spectral sensitivities, and color matching functions.
- Obtained visual tristimulus values and three-channel response values using the model for a given target.
- Adjusted target parameters to simulate diverse HDR imaging conditions and applied regression algorithms for calibration.
Main Results:
- The proposed method demonstrated a broader dynamic range and denser sampling compared to existing techniques.
- Achieved enhanced accuracy in colorimetric characterization models for imaging systems.
- Resulted in superior resolution in color measurement for HDR applications.
Conclusions:
- The digital chain measurement approach offers a robust solution for HDR colorimetric calibration.
- This method significantly improves the performance and reliability of color management in advanced imaging systems.
