9.Software Tools
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 119
9
Load File
Load the flat field correction coefficient from the file and
Immediate
10
Save File
Save the calculated flat field correction coefficient to a file.
When the coefficient is used later, it can be loaded directly from
the file
11
Prompt Information
Prompt the execution status and error message when the user
is executing flat field correction
Table 9-1 Function description of the FFC widgets
If the camera does not support flat field correction, all widgets in the GUI will be grayed out.
9.3.2. User Guide
9.3.2.1. FFC Execution Steps
Step 1: Set the acquisition frame count. This step is not necessary. You can skip to step 2 directly. For
details, please see section 8.4.5.1.
Step 2: Acquisition of darkfield images. This step is not necessary. You can skip to step 3 directly. For
details on acquiring darkfield images, please see section 8.4.5.1.
Step 3: Before acquiring the brightfield image, you need to aim the lens at white paper or flat fluorescent
lamp.
Step 4: Start acquiring brightfield images. For details on acquiring brightfield images, please see section
8.4.5.1.
Step 5: Select "Execute FFC" to complete the correction.
Step 6: You can check the effects before and after the flat field correction through the preview function.
Step 7: Adjust the image brightness by correcting the expected gray value.
Step 8: You can choose to write the correction factor (including Acquisition Frame Count and FFC
Expected Gray Value) to the device or save to a file for subsequent use.
9.3.2.2. Acquisition of Darkfield Images
1) When the device is in the stop acquisition mode, when clicking the "Acquisition of Darkfield Images"
button, an image will be displayed in the GalaxyView acquisition interface.
2) When the device is in the acquisition mode, select "Acquisition of Darkfield Images", the GalaxyView
acquisition interface will flash, indicating that the device is acquiring the darkfield image, and after the
acquisition of darkfield images is completed, the device Recovery the acquisition state.
3) If the brightness of the currently acquired darkfield image is greater than 20, the prompt information
given in the prompt box is as shown in Figure 9-13. That is, when the flat field correction is executed,
the darkfield image is not used, and the effect of flat field correction is not affected.
