Binning - Basler A202K Manual

Operation and Features

3.8 Binning

Binning increases the camera's sensitivity to light by summing the charges from adjacent pixels
into one pixel. There are three types of binning available: horizontal binning, vertical binning, and
full binning.
With horizontal binning, pairs of adjacent pixels in each line are summed (see Figure 3-14). With
vertical binning, pairs of adjacent pixels from two lines are summed. Full binning is a combination
of horizontal and vertical binning in which four adjacent pixels are summed.
When horizontal binning is active, image resolution decreases to 502 pixels (H) by 1004 pixels
(V). When vertical binning is active, resolution decreases to 1004 (H) by 502 (V). With full binning,
resolution decreases to 502 (H) by 502 (V).
You can set binning using either the Camera Configuration Tool (see Section 4.1 and the
configuration tool's on-line help file) or binary commands (see Section 4.2). With the Camera
Configuration Tool, you use the Features Tab to enable binning. With binary commands, you use
the Horizontal Binning and Vertical Binning commands.
Charges from adjacent
pixels in each line
are summed and reported
out as a single pixel.
Horizontal
Binning
Figure 3-14: Binning
Using horizontal or vertical binning generally increases the camera's sensitivity by
up to two times normal. Full binning increases sensitivity up to four times normal. Af-
ter switching on binning, the image might look overexposed. Reduce the lens aper-
ture, light intensity, or exposure in this case.
With horizontal binning active, frame grabbers often require the information that the
horizontal resolution is 502. With vertical binning active, they often require the infor-
mation that the vertical resolution is 502. With full binning active, they often require
the information that the horizontal resolution is 502 and the vertical resolution is 502.
The camera's pixel clock normally operates at 40 MHz. However, when horizontal or
full binning is used, the pixel clock is 20 MHz.
3-28
DRAFT
Charges from adjacent
pixels in two lines
are summed and reported
out as a single pixel.
Vertical
Binning
Charges from groups
of four pixels are
summed and reported
out as a single pixel.
Full
Binning
BASLER A202
k