COEX provide users with various calibration services including brightness calibration, brightness and chroma calibration, and full-grayscale calibration, and the VMP software can control the on and off of the calibration effect.
After launching the VMP software, click on Tools in the top navigation bar. Click on Coefficient Management in the drop-down menu. Users can enter the calibration coefficient management interface of VMP software.
¶ Calibration Effect Switch
¶ Brightness Calibration and Brightness & Chroma Calibration
Brightness and Chroma Calibration are advanced versions of Brightness calibration, using the Brightness calibration coefficients as a base and adding the Chroma coefficient.Therefore, the two calibration switches are mutually exclusive and cannot be turned on at the same time.
¶ High Precision Calibration
This type of calibration is often found in calibration software. High precision calibration principle and calibration file format are the same as Brightness and Chroma Calibration. The calibration effect is better but takes a longer time, mainly for the COB screen. The calibration effect switch in VMP is differentiated by the type of calibration file. Since the file format of High Precision Calibration is the same as Brightness and Chroma Calibration, the switch is shared.
¶ Full Grayscale Calibration and Low Grayscale Calibration
In projects, the full grayscale calibration and low grayscale calibration switches may have three states in the VMP software:
1）white can be switched on and off,
2）gray default switch off,
3）do not show the switch on the software side
These three states correspond respectively:
1) the cabinet supports this calibration and completes this calibration
2) The cabinet supports this calibration but has not completed the calibration
3) The cabinet does not support this calibration
¶ Thermal Compensation
Because its coefficient files are merged in the NCP file and not stored separately, and the main application scenario is not the same as all other calibrations. The switch is designed to be located separately under the Image Quality Adjustment interface and the Group Management Control interface, and not in the Coefficient Management interface.
¶ Display Adjustment
To facilitate the user to check the effect of calibration coefficient management in real-time, this Display section provides the function of brightness and test pattern adjustments.
The Tab button switches the screen between the internal test patterns and the external source.
The locating cursor is the cursor displayed on the screen when the user selects the range of cabinets or modules to be adjusted.
The switch here on the VMP turns the cursor display on and off.
¶ Select Mode
¶ Screen Mode
¶ Cabinet Mode
¶ LDM(Module) Mode
¶ Pixel Mode
¶ Application Scenario
Soldering of individual lamp beads or other reasons causes the color deviation (Calibration of bright spots caused by camera dust)
¶ Coefficient adjustment
RR: Grayscale of the red lamp when it is red
RG: Grayscale of the green lamp when it is red
RB: Grayscale of the blue lamp when red
¶ Module Flash
Stores calibration coefficients for the corresponding module.
¶ Coefficient Save
¶ User Area
Receiving card user area that accepts and stores changes made by the user to the calibration coefficients on the VMP software.
Accepts users to adjust or upload new calibration coefficients according to their needs. In addition to calibration coefficients, it also accepts the storage of adjustment parameters such as seam correction, multi-batch adjustment, and so on.
¶ Module Flash
Stores the factory calibration coefficients and is only used to store the module calibration coefficients, which are highly secure and stable and cannot be modified.
Since it determines the location of the module corresponding to the cabinet calibration coefficients, it is necessary to prioritize reading back the module flash in case of module replacement, otherwise, the cabinet-level calibration coefficients will not take effect.
¶ Operation Instructions
¶ Save and Read
Save: Saves the current coefficient status of the VMP calibration coefficient management interface to the user area of the receiving card.
Read: Reads back the calibration coefficients from the user area/module flash and applies them to the selected display area.
¶ Export
Export: Export the calibration coefficients of the currently selected display area to local.
¶ Upload Coefficients
Upload Coefficients: Uploads local calibration coefficients and applies them to the selected display area.
The resolution information in the upload interface can help the user recognize the coefficient mode in case the local coefficient naming is unclear.
The calibration coefficients for a cabinet or module mode can only be uploaded to the corresponding mode.
Local Cabinet - Cabinet Mode
Local Module - Module Mode
Local Module x Cabinet Mode
Local Cabinet x Module Mode
If you upload a coefficient file that does not correspond to the corresponding mode, the following error message will appear:
When uploading non-corresponding calibration coefficients to a cabinet or module, the user must manually select the SN code to complete the upload.
We consistently enhance and refine the content of our Wiki articles.
If you find any mistakes or errors, please contact us.
Your continuous feedback and support will help us further improve our products and content.