Calibration of displays connected to a madVR based Home Cinema system using LightSpace CMS is exceptionally simple, with integration for profiling and LUT upload.
- Open madTPG.exe, which is madVR's Test Patch generator, from the madVR install folder
- If using MadTPG over a network check the mad* tray icon via a 'right click', and make sure 'LAN Access' is Enabled
(If Disabled, Enable it, and re-start madVR)
- If wanted, 'videoluts' and '3dluts' can be dissabled via the madTPG menu, although LightSpace will manage this later
- Use a double click on madTPG to make full-screen, with no surround or menu area
- Within LightSpace Navigate to File/Upload, and select the madVR option from the 'Select the device type' drop-down window.
(You will need to manually enter the PC name or IP address of the system madVR is installed on. If on the same PC as LightSpace this will be 'localhost'.)
- If there is no LUT active with LightSpace the NULL Cube option will be ticked and greyed-out, but is operational.
(As no other LUT is available the ONLY option is the NULL Cube)
- Select the 'Gamut Slot' into which the LUT will be uploaded
- To make sure no LUT is already active within madVR select 'Upload', with the NULL Cube box ticked.
- Using the 'Calibration Patches' option select the desired patch size and background level to use, as well as the desired APL mode.
- Close the 'Upload' menu.
The Upload menu is located under 'File/Upload'.
Prior to profiling make sure the the Brightness and Contrast settings for the display have been set as per the Initial Display Set-up guide.
Profiling & Calibration Operation
To activate the madVR Patch Generator navigate to the desired profiling mode within LightSpace - Calibration Interface, or Display Characterisation.
When the patch window is activate within LightSpace (the LightSpace CMS internal floating patch window has been made active by clicking the small colour display box when using Quick Profiling or Manual Measure modes) the madVR patch generator will mimic the colour displayed, using the patch size pre-set via the 'Upload' window.
Profiling can then be performed as normal, using the probe connected to LightSpace, and with madVR displaying the required patches on the display screen.
After profiling a Calibration LUT can be generated as normal, and with the LUT held within LightSpace navigate back to the 'Upload' menu, and with the 'NULL Cube' tick box un-ticked, the present LUT displayed within LightSpace can be 'Uploaded' into the select 'Gamut Slot' within madVR
In this way, many different LUTs can be held within LightSpace CMS and quickly and easily uploaded into madVR as needed.
madVR LUT and VideoScale
For all generated LUTs, after the calibration LUT has been generated via LightSpace CMS in the normal way, use the 'Edit/LUT Manipulation/VideoScale' functions to format the LUT data as required, using VideoScale Pass Black, or VideoScale Clip Black functions as required.
Normally, for data range image path workflows, VideoScale would not be needed. However, madVR uses a video level workflow for both video and data ranges, so all LUTs loaded into madVR will need to have one of the VideoScale functions applied regardless of TV Legal or Data ranges being used.