This article covers
1. Steps for backing up current calibration data
2. Steps for saving calibration data to file
3. Steps for loading calibration data from file and applying it to camera
5. Pixel correction for cameras supporting Gain HDR feature
1. Steps for Backing up Current Calibration Data
1) Connect the camera to your computer. (Make sure camera is detected in the device manager)
2) Open SDPC_Wizard.exe file on your computer.
3) A Window will open.
4) Click next to continue.
Note: If the camera is visible by the computer, then it will go to the next step.
5) The following window will open.
6) To save current calibration, select Backup Current Calibration Data and press Start SDPC Calibration as it is shown below. Save Log File selection is optional.
The Current Calibration Data file will be saved in Documents folder with a name of format "SDPC_Backup_Calibration_SN_Date_Time_Year".
Note: Since the Write New Calibration to Flash was not selected, performed Static Defective Pixel Test data will not be saved into a camera Flash memory.
2. Steps for Saving New Calibration Data to File
1) Select Save Calibration Data.
You can change a saving location and the name of the Calibration Data file by pressing on Browse.
Note: Selecting Write New Calibration to Flash will not load Calibration Data into the camera Flash memory at this stage since Load Calibration Data is not selected.
2) Press Start SDPC Calibration.
All of these steps are shown in the image below.
3. Steps for Loading Calibration Data from File and Applying to Camera
1) Select Write New Calibration to Flash.
Note: Write New Calibration to Flash must be selected or Calibration Data cannot be loaded and an error message will be provided.
2) Select Load Calibration Data and browse to its location using “Browse” button
3) Press Start SDPC Calibration.
4. Selective Pixel Correction
The current Calibration Data or a new Calibration Data can be stored in a .csv file inside the Documents folder and loaded to the camera Flash memory later, as it has been shown in the sections 2 and 3 of this manual. In addition, the calibration data in the .csv file can be modified and only desired pixels can be corrected. For more information about pixel correction, please refer to the Static Defective Pixel Correction Wizard Guide article of our knowledge base.
The .csv file can be opened by Microsoft Office Excel or Notepad as it is shown below, where one line represents X, Y, Defective Pixel Type, and Digital Number (DN) Difference for each listed pixel. SDPC Wizard lists all defective pixels found and orders them by severity. The maximum number of defective pixels that can be corrected varies depending on camera model. Typically, it is between 1000 and 4096. Also, the number of defective pixels found by SDPC Wizard can be verified in the SDPC working window or a saved Log File, if the last one is selected.
Where column A - X, B – Y, C - Defective Pixel Type, and D - DN Difference of a pixel.
For Selective Pixel Correction:
1) Open the .csv file that is created in the section 1 or 2 of this manual.
2) Edit the .csv file by adding, deleting, and/or replacing desired pixels for being corrected as it is shown below.
3) Save the edited .csv file.
4) Load the edited .csv file and write it into the camera Flash memory as it is discussed in the section 3 of this manual. The SDPC Wizard correction result is shown below.
5. Pixel Correction for Cameras Supporting Gain HDR Feature
SDPC Wizard can perform pixel correction for cameras supporting the Gain HDR feature. Please refer to the Gain HDR article for more information about this feature. The recommended procedure is different depending on which Gain HDR option a camera is used with such as Camera or Interleaved HDR.
For Camera HDR:
1) Run camera control software such as Pixelink Capture and disable the Gain HDR feature setting
2) Follow steps 1) - 5) of the Steps for Backing up Current Calibration Data section
3) Set desired Exposure Time (ms) setting
4) Set Gain (dB) setting to 12 dB
5) Enable Bright Frame SDPC setting if needed
6) Start SDPC Calibration
Important:
Since pixel correction is performed for Camera HDR, it is used with Camera HDR setting enabled or disabled but not with Interleaved HDR.
For Interleaved HDR:
1) Run camera control software such as Pixelink Capture and disable the Gain HDR feature setting
2) Follow steps 1) - 5) of the Steps for Backing up Current Calibration Data section
3) Set desired Exposure Time (ms) setting
4) Enable Backup Current Calibration Data
Note: It is important to enable this setting in order to back up current calibration data, so it can be loaded back, if the camera needs to be used without Interleaved HDR in the future. See Important note further in this article.
5) Enable Program Interleaved HDR SDPC
6) Enable Bright Frame SDPC setting if needed
7) Start SDPC Calibration
Important:
Since pixel correction is performed for Interleaved HDR, switching this setting to Camera HDR or disabling it makes pixel correction invalid.
In order to restore pixel correction for Camera HDR or when this setting is disabled, calibration data saved in Documents folder with a name of format "SDPC_Backup_Calibration_SN_Date_Time_Year" from step 4) must be reloaded. See the Steps for Loading Calibration Data from File and Applying to Camera section with instructions on how to do it.