VO WBC Save Demo#
Introduction#
This example demonstrates how to use the WBC (White Balance Calibration) save function of the K230’s VO (Video Output) module. WBC is used to calibrate display white balance and improve display quality.
Feature Description#
WBC Functions#
This example demonstrates the main features of WBC saving:
White Balance Calibration: Automatically calibrate display white balance
WBC Data Save: Save WBC data to a file
WBC Parameter Configuration: Configure WBC calibration parameters
Quality Evaluation: Evaluate white balance calibration results
WBC Characteristics#
Automatic Calibration: Supports automatic white balance calibration
Manual Calibration: Supports manual white balance parameter setting
Temperature Compensation: Supports temperature-related white balance compensation
Data Export: Supports exporting WBC calibration data
Application Scenarios#
Display quality optimization
White balance calibration
Display effect testing
Production line calibration
Code Location#
Demo source location: src/rtsmart/examples/mpp/sample_vo_wbc_dump
Usage Instructions#
Compilation Method#
In the K230 RTOS SDK root directory, use make menuconfig to configure build options, select to compile the VO WBC dump example into the firmware, then build the firmware.
Running the Example#
./sample_vo_wbc_dump [options]
Parameter Description#
Parameter Name |
Description |
Default Value |
|---|---|---|
output_file |
Output file name |
wbc_data.bin |
calibrate |
Whether to perform calibration |
yes |
dump_data |
Whether to dump data |
yes |
Viewing Results#
After the program runs, it will:
Initialize the VO module
Configure the WBC function
Perform white balance calibration
Dump WBC data to file
Display calibration statistics
Output example:
VO WBC Dump Demo
==================
Initializing VO module...
VO initialized successfully
Configuring WBC...
WBC module configured
Starting WBC calibration...
Calibrating white balance...
Channel R: Gain=1.2, Offset=10
Channel G: Gain=1.1, Offset=5
Channel B: Gain=1.15, Offset=8
Calibration completed!
Dumping WBC data...
Data size: 1024 bytes
Output file: wbc_data.bin
Calibration statistics:
R gain: 1.200
G gain: 1.100
B gain: 1.150
R offset: 10
G offset: 5
B offset: 8
Quality score: 95.5
Dump completed!
Press Ctrl+C to exit.
Tip
WBC white balance calibration can significantly improve display quality, and periodic calibration is recommended. For specific interfaces of the WBC module, please refer to the Display Output API Documentation.