SpaceMatch DCM User Guide

SpaceMatch DCM enables the colour management of any PC connected displays, avoiding the problematic issues associated with ICC Profiles.

Using ICC profiles for PC display calibration is fraught with problems when used within the film and TV industry, as many graphics programs attempt to use any ICC based display calibration as part of their internal image colour management. This can often cause the final exported image to suffer unwanted colour changes.


Initial Operation

SpaceMatch DCM User Guide

SpaceMatch DCM is a standalone .exe program. Simply unpack the download file and install the spaceman.exe program in to any folder of your choice; C:\SpaceMatch is a suggestion, and will be used as the location within this user guide.

When started SpaceMatch DCM will offer the chance to register and license. If the program has been purchased, and is not being used just for evaluation, follow the registration instructions.

For demo purposes, continue without licensing, just using registration, which will give 14 days usage to allow the various capabilities to be explored. During demo use some system functions will not operate.

Registration details (and the option to register at a later date) are always available via the 'help\license' menu.


Basic Operation

When first started SpaceMatch DCM will read and display any active VCGT (Video Card Gamma Table) data, either previously loaded via SpaceMatch or via an ICC profile loaded through an ICC based calibration system.

If this is the first time SpaceMatch DCM has been loaded and started on a given PC system and an active VCGT is displayed it is imperative that the ICC based colour management system that loaded the ICC profile is located and deactivated or uninstalled. Before progressing further make sure this is accomplished, and that every time the PC is re-booted no new ICC profile is loaded into the VCGT, as shown by starting SpaceMatch DCM.

Note: If the already active LUT from a previous ICC profile might be required again use the 'Save' button to save the VCGT LUT in the default SpaceMatch LUT format.

If multiple displays are in use make sure this is true for all displays by locating the SpaceMatch program window within each display in turn, and use the 'Read' function to read the VCGT data for each display in turn.

SpaceMatch DCM

When first started a single LUT display window is active within SpaceMatch. New LUT display windows can be opened with the 'New File' button, or via the 'File/New LUT' menu. The new LUT window will also read the active VCGT data.

Assuming the LUT window shows no pre-active VCGT, as it should, the 'Load' button can be used to navigate to the required VCGT LUT and load it into the SpaceMatch LUT window.

Note: LightSpace CMS is used to perform the display profiling, and generate the required calibration LUT, with SpaceMatch DCM then applying the generated LUT to the display.

With the required LUT loaded into the SpaceMatch window, the 'Apply' button will apply the LUT, making it active by loading it into the video card driving the display SpaceMatch is presently located within.

With multiple SpaceMatch windows open, as in the above image, each LUT can be loaded by using the 'Apply' button within each SpaceMatch window.

At any time the LUT data held within the VCGT can be reset via the 'Reset Display Tables' button.


Command Line Mode

To enable display calibration to remain active at all times SpaceMatch DCM comes with a command line mode that can be used to setup a Task Schedule, or Startup operation, depending on the OS. This enables SpaceMatch to be automatically activated, and load a specific LUT as soon as the PC is powered-up.

Command Line Operators
The available SpaceMatch DCM command line operators are:

  • spacematch help (to bring up the following info)
  • -l lut filename
  • -r reset lut
  • -d display number (optional, default 0)

Usage examples, using the suggested default location and to load a LUT called lut.txt to display 1, would be:

C:\SpaceMatch\spacematch.exe -l lut.txt -d 1

To run as a shortcut, or within Task Scheduler, the text string would be:

C:\SpaceMatch\spacematch.exe /l lut.txt /d 1


Remove All Other ICC Colour Management Programs

If any alternative colour management programs have been installed, including the activation of Window's own Colour Management tools, they must be deactivated as many will attempt to re-activate their own management without warning.

It best to uninstall all competing colour management software to prevent any conflicts.

For Windows Colour Management use the following instructions to disable its operation.

  • Go to Control Panel, Colour Management
  • Start with the 'Devices' tab
  • Remove all 'Profiles' associated with any display device
  • Go to 'Advanced' tab, 'Change System Defaults'
  • Again, Start with the 'Devices' tab
  • Remove all 'Profiles' associated
  • Go to 'Advanced' tab
  • Un-tick the box 'Use Windows display calibration'
  • Close everything
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