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DNP

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Global

Address Color Variation Challenges

Color Management

Color management ensures accurate and consistent color reproduction across devices, environments and imaging conditions.

DNP has provided high-precision color management solutions for decades, leveraging its expertise in accurate color reproduction gained through extensive experience in the printing industry.

Leveraging its proprietary color charts and color correction technologies, DNP delivers consistent and reliable color reproduction across a wide range of applications, including medical imaging and digital pathology.

DNP color charts and tools

DNP offers color charts developed with its advanced printing technologies. These charts support highly accurate color correction and evaluation across a wide range of applications, including medical imaging and general imaging.

DNP color chart slides

Designed to match the dimensions of a standard microscope slide, this color chart supports use with transmitted-light microscopes and Whole Slide Imaging (WSI) scanners.

For applications using WSI scanners, models with focus markers are also available. Choose the model that best suits your needs.

Pathology color chart

Designed specifically for pathology applications, this color chart reproduces pathology stain colors with high spectral accuracy.

H&E color chart slide

Features
  • Features specially designed color patches that reproduce H&E stain colors based on spectral data.
  • Includes focus markers to improve slide positioning during scanning.
Model No. CTCDH&EFILF1SGSB1A00
IHC color chart slide
Features
  • Features specially designed color patches that reproduce the colors of IHC stains, including HER2 and Ki-67.
  • Includes focus markers to improve slide positioning during scanning.
Model No. CTCDIHCFILF1SGSB1A00

Color chart slide

This color chart supports color evaluation for both pathology and general imaging applications.

Color chart slide (full-feature model)
Features
  • Complies with ITU-R BT.709 and ITU-R BT.2020 standards.
  • Includes color patches for red, green, blue, cyan, magenta, yellow, white, gray, violet and near-infrared (NIR).
  • Features violet (short-wavelength visible light) and deep-red (long-wavelength visible light) patches for light source evaluation.
  • Supports multiple objective lens magnifications, including 10×, 20× and 40×.
Model No.

BT.709：CTCDSHD70901SGMS3A00

BT.2020：CTCDUHD02001SGMS3A00
Color chart slide (basic model)
Features
  • Compliant with ITU-R BT.709 and ITU-R BT.2020 standards.
  • Color patches: red, green, blue, cyan, magenta, yellow, white, and gray.
  • Includes focus markers to improve image position recognition during scanning.
Model No. BT.709：CTCDSHD709F1SGSB1A00

Gray chart slide

This gray chart supports grayscale and brightness calibration, enabling reliable image quality evaluation.

Gray chart slide (full-feature model)
Features
  • Provides high-precision grayscale calibration using multi-level grayscale patches.
  • Features flat spectral characteristics that minimize the effects of light sources and camera response.
  • Supports multiple objective lens magnifications, including 10×, 20× and 40×.
Model No. CTGD11STEP01SGMS2A00
Gray chart slide (basic model)
Features
  • Provides high-precision grayscale calibration using multi-level grayscale patches.
  • Features flat spectral characteristics that minimize the effects of light sources and camera response.
  • Includes focus markers to improve slide positioning during scanning.
Model No. CTGD11STEPF1SGSB1A00

Resolution evaluation chart slide

This chart supports the quantitative evaluation of imaging system resolution and distortion.

Features
  • Resolution evaluation (in mega cycle chart)
    • Evaluates the visibility of fine line structures.
    • Supports multiple objective lens magnifications, including 10×, 20×, 40× and 100×.
    • Supports evaluation of line-and-space patterns down to 200 nm with the 100× objective lens model.
  • Distortion check (crosshatch chart)
    • Verifies image linearity at both the center and periphery of the image.
    • Supports multiple objective lens magnifications, including 10×, 20×, 40× and 100×.
    • Features a crosshatch pattern designed specifically for distortion evaluation.
Model No. CTLDIMSCRH01SGMS3A00

Glass slide format

The slide dimensions conform to ISO 8037-1:1986.

Overall dimensions of the DNP Color Chart Slides: Length, 75-76 mm; Width, 25-26 mm; Thickness, 1.17-1.27 mm.

Note: To maintain optimal color accuracy, we recommend scanning the color chart and creating an ICC profile before each day of use.

ICC profile generation software

This software generates ICC profiles used for color correction based on measurements from a color chart.

Color Correction Software Interface. The software analyzes color data from a color chart image to generate an ICC profile.

Key features and workflow

  • Install the software and reference data for the target color chart on a PC.
  • Import a DNP color chart slides image into the software.
  • Compare the captured color chart image with the reference data to generate an ICC profile that matches the captured colors to the reference values.
  • Quantitatively evaluate color accuracy before and after correction using color difference metrics, with results provided in a report.
  • Supports DNP color chart slides and DNP reflective color charts.

Notes

  • This software generates ICC profiles and does not provide color conversion capabilities.
  • Color conversion requires software that supports ICC profiles.
  • We plan to make this software available outside Japan in a future release.