
8.Features
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 115
4) Mutually exclusive with Decimation
Binning and Decimation cannot be used simultaneously in the same direction. When the horizontal Binning
value is set to a value other than 1, the horizontal Decimation feature cannot be used. When the vertical
Binning value is set to a value other than 1, the vertical Decimation feature cannot be used.
8.3.11. Decimation
The Decimation can reduce the number of sensor pixel columns or rows that are transmitted by the camera,
reducing the amount of data that needs to be transferred and reducing bandwidth usage.
How Vertical Decimation Works
On mono cameras, if you specify a vertical Decimation factor of n, the camera transmits only every n
th
row.
For example, when you specify a vertical Decimation factor of 2, the camera skips row 1, transmits row 2,
skips row 3, and so on.
On color cameras, if you specify a vertical Decimation factor of n, the camera transmits only every n
th
pair
of rows. For example, when you specify a vertical Decimation factor of 2, the camera skips rows 1 and 2,
transmits rows 3 and 4, skips rows 5 and 6, and so on.
Figure 8-41 Mono camera vertical Decimation
Figure 8-42 Color camera vertical Decimation
As a result, the image height is reduced. For example, enabling vertical Decimation by 2 halves the image
height. The camera automatically adjusts the image ROI settings.
Vertical Decimation significantly increases the camera
’s frame rate.
How Horizontal Decimation Works
On mono cameras, if you specify a horizontal Decimation factor of n, the camera transmits only every n
th
column. For example, if specify set a horizontal Decimation factor of 2, the camera skips column 1,
transmits column 2, skips column 3, and so on.
On color cameras, if you specify a horizontal Decimation factor of n, the camera transmits only every n
th
pair of columns. For example, if you specify a horizontal Decimation factor of 2, the camera skips columns
1 and 2, transmits columns 3 and 4, skips columns 5 and 6, and so on.