Field Output Modes - Basler ace acA640-90gm User Manual

7.5.2

Field Output Modes

On acA750 cameras, four "field output modes" are available: field 0, field 1, concatenated new
fields, and deinterlaced new fields.
Field 0 Output Mode: Each time the camera receives a frame trigger signal, it acquires, reads out,
and transmits a frame using the field 0 scheme described in Section 7.5.1 on
pairs of rows are combined, the transmitted image is commonly referred to as "half height", i.e., the
number of vertical pixels in the transmitted image will be one half of the number of physical pixels
in the sensor.
In Field 0 output mode, the pixel data from field 0 is considered to be a frame. Each time the camera
receives a frame trigger signal, it will acquire field 0 and will transmit the field 0 pixel data as a frame.
Frame
Row 0 + Row 1
Row 2 + Row 3
Row 4 + Row 5
Row 6 + Row 7
Row 8 + Row 9
Fig. 41: Field 0 Output Mode
Field 1 Output Mode: Each time the camera receives a frame trigger signal, it acquires, reads out,
and transmits a frame using the field 1 scheme described in Section 7.5.1 on
pairs of rows are combined, the transmitted image is commonly referred to as "half height", i.e., the
number of vertical pixels in the transmitted image will be one half of the number of physical pixels
in the sensor.
In Field 1 output mode, the pixel data from field 1 is considered to be a frame. Each time the camera
receives a frame trigger signal, it will acquire field 1 and will transmit the field 1 pixel data as a frame.
Frame
Row 1 + Row 2
Row 3 + Row 4
Row 5 + Row 6
Row 7 + Row 8
Row 9 + Row 10
Fig. 42: Field 1 Output Mode
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Image Acquisition Control
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