8.Features
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 103
BayerRG10/BayerRG12
When the pixel format is set to BayerRG10 or BayerRG12, the value of each pixel in the output image of
the camera is 16 bits. According to the location difference, the three components of red, green and blue
are respectively represented. The format in the memory is as follows:
R00
G01
R02
G03
R04
……
G10
B11
G12
B13
G14
……
……
Each pixel is the same as BayerRG8, the difference is that each pixel is made up of two bytes, the first
byte is the low 8 bits of the pixel value, and the second byte is the high 8 bits of the pixel value.
8.3.3. ROI
By setting the ROI of the image, the camera can transmit the specific region of the image, and the output
region
’s parameters include OffsetX, OffsetY, width and height of the output image. The camera only reads
the image data from the sensor
’s designated region to the memory, and transfer it to the host, and the
other regions
’ image of the sensor will be discarded.
By default, the image ROI of the camera is the full resolution region of the sensor. By changing the OffsetX,
OffsetY, width and height, the location and size of the image ROI can be changed. The OffsetX refers to
the starting column of the ROI, and the OffsetY refers to the starting row of the ROI.
The coordinates of the ROI of the image are defined the 0
th
line and 0
th
columns as the origin of the upper
left corner of the sensor. As shown in the figure, the OffsetX of the ROI is 4, the OffsetY is 4, the height is
8 and the width is 12.
0
0
1
2
3
4
5
6
7
8
9
10
11
0
1
2
3
4
5
6
7
Raw
8
9
10
11
12
12
13
14
15
16
17
18
19
20
21
22
Height
OffsetY
OffsetX
Width
ROI
Column
Figure 8-30 Mono8
