The Color Space & Monitor (CSM) Test Pattern Suite | SRI International
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The Color Space & Monitor (CSM) Test Pattern Suite

The Color Space & Monitor (CSM) Test Pattern Suite tests digital television transmission systems, processing chains, compression systems and displays. The suite tests for color space correctness and performance and reveals tradeoffs being made during conversion among various color spaces.  

The CSM suite has been designed to reveal problems that may arise in color space processing including High Dynamic Range (HDR) and Wide Color Gamut (WCG) systems. The test suite is an “eyes-only” design—it gives meaningful information without the use of specialized test gear. Simple observation is often sufficient.  

Formats and Patterns

Patterns can be rendered in any resolution, frame rate, and color space. The suite includes the following patterns:

  • Full gamut pattern – Color chips between white and points on the 2020 or P3 gamut
  • Inter gamut pattern – Color chips between 709 and P3, and between P3 and 2020
  • Triple gamut pattern – Color chips around each of three gamut triangles
  • BT.2111 HDR color bars – Standard ITU color bars for HDR systems
  • Multi-gamut color bars – 709, P3 and 2020 color bars in a 2020 container
  • Color chips – Standard Color Checker plus gamma/EOTF tracking test
  • Dark chips – low-light dynamic range threshold test
  • Dark moons – low-light dynamic range gradient test
  • Color ramps – Rotating gradients in W,Y,C,G,M,R,B at various brightness ranges
  • Jacob’s ladder –Nit-calibrated stairsteps, 13 steps per decade, 9 decades, 50Knits to .005 nits
  • Nit Chip 100 – Ten small-area calibrated brightness patterns, 4000 nits to 1 nit.
  • Multispace – Reference images presented in eight color spaces in one image
  • UHDA 540/10 – Brightness tests for the UHDA compliance points
  • Faces – Multi-racial skin-tone references
  • Colored line pairs – Instant visual test of EOTF and gamut correctness
  • Tone Map – Makes display EOTF compromises visible
  • Tone Map APL – reveals display power limiting
  • Yellow Brick Road – Probes three-dimensional color volume

Multiple formats are available. Not all formats are included in all products.


Learn more about the CSM Test Pattern Suite. Send us your requirements using the contact form below.

Other Products in This Suite

Visualizer test pattern screen

The Visualizer™ test pattern offers a comprehensive way to evaluate more than 20 key parameters of video quality from a single screen. Users can easily identify processing errors throughout the digital signal chain.

computer monitor with "VERIFY" on-screen

Using SRI’s Emmy® award-winning technology, the Sarnoff® Bitstreams™ suite is the de facto standard for systematically and unambiguously testing decoders against industry standards. It works in a matter of seconds and does not require a reference signal or specialized decoder.

audio console close up

AudioRef™ is a package of scientifically calibrated audio reference clips that enable professionals to accurately set up and evaluate audio monitoring equipment.

These decoder tests assess HEVC compliance and video processing performance any stage of the development cycle—from simulations to integrated products.

AV control pane with test patterns displayed on 2 monitors

SRI’s ESP™ is a sophisticated video clip consisting of specialized and complex artificial test patterns that stress various aspects of processing to quickly reveal television encoder deficiencies.

3D boxes floating out of tv monitor

SRI’s suite of 3D test patterns is specifically designed to test 3D signal chains, workflows, and displays. These tools allow users to easily evaluate and calibrate 3D video equipment by revealing errors visually.

front and back views of TG-100 rack unit hardware

Sarnoff audiovisual test sequence generators combine acclaimed digital test patterns with uncompressed playback hardware for testing and verifying the quality of digital video signal chains up to 4Kp60 using HDMI and Quad 3G-SDI.

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