Yuv 4:2:2 (Yuyv) Packed Format - Basler GIGE VISION ace acA640-100gm/gc Manual

Pixel Data Formats
8.3.5
On color cameras, the YUV 4:2:2 (YUYV) packed pixel data format is similar to the YUV 4:2:2 pixel
format described in the previous section. The only difference is the order of the bytes transmitted
to the host PC. With the YUV 4:2:2 format, the bytes are ordered as specified in the DCAM standard
issued by the 1394 Trade Association. With the YUV 4:2:2 (YUYV) format, the bytes are ordered to
emulate the ordering normally associated with analog frame grabbers and Windows
The table below describes how the pixel data for a received frame will be ordered in the image buffer
in your PC when the camera is set for YUV 4:2:2 (YUYV) output.
With this format, the Y component is transmitted for each pixel, but the U and V components are
only transmitted for every second pixel.
The following standards are used in the table:
P = the first pixel transmitted by the camera
0
P = the last pixel transmitted by the camera
n
B = the first byte in the buffer
0
B = the last byte in the buffer
m
Byte Data
B Y value for P
0
B U value for P
1
B Y value for P
2
B V value for P
3
B Y value for P
4
B U value for P
5
B Y value for P
6
B V value for P
7
B Y value for P
8
B U value for P
9
B Y value for P
10
B V value for P
11
•
•
•
B Y value for P
m-7
B U value for P
m-6
B Y value for P
m-5
B V value for P
m-4
B Y value for P
m-3
B U value for P
m-2
B Y value for P
m-1
B V value for P
m
124
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YUV 4:2:2 (YUYV) Packed Format

0
0
1
0
2
2
3
2
4
4
5
4
•
•
•
n-3
n-3
n-2
n-3
n-1
n-1
n
n-1
®
frame buffers.
Basler ace