ALLIED Vision Technologies Marlin F-201 - Manual (Page 214)

Configuration of the camera
MARLIN Technical Manual V2.4.0
214
Shading correction
Owing to technical circumstances, the interaction of recorded objects with
one another, optical effects and lighting non-homogeneities may occur in
the images.
Because these effects are normally not desired, they should be eliminated as
far as possible in subsequent image editing. The camera has automatic shad-
ing correction to do this.
Provided that a shading image is present in the camera, the on/off bit can
be used to enable shading correction.
The on/off and ShowImage bits must be set for saved shading images to be
displayed.
Note
L
Always make sure that the shading image is saved at the
highest resolution of the camera. If a lower resolution is cho-
sen and ShowImage is set to true, the image will not be dis-
played correctly.
Register Name Field Bit Description
0xF1000250 SHDG_CTRL Presence_Inq [0] Indicates presence of this
feature (read only)
BuildError [1] Could not built shading
image
--- [2..3] Reserved
ShowImage [4] Show shading data as image
BuildImage [5] Build a new shading image
ON_OFF [6] Shading on/off
Busy [7] Build in progress
--- [8..23] Reserved
GrabCount [24..31] Number of images
0xF1000254 SHDG_MEM_CTRL Presence_Inq [0] Indicates presence of this
feature (read only)
--- [1..4] Reserved
EnableMemWR [5] Enable write access
EnableMemRD [6] Enable read access
--- [7] Reserved
AddrOffset [8..31] In bytes
Table 108: Advanced register: Shading