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→Image size and ROI area
Related commands ：fmtcap, pixelformat.
Related commands ：fmtcap, pixelformat.
==== Image size and ROI area ====
==== Image size and Max framerate ====
Image size depends on the sensor. It varies from model to model.
The maximum image frame rate depends on the sensor and the camera processing power, and the maximum frame rate varies for different image sizes.
After setting the completed image size (ROI area), the camera will automatically calculate the maximum frame rate and provide it to the user for reference.
The maximum frame rates for typical sizes are shown in the following table.
{| class="wikitable"
!model
!size
! max framerate
!Note
|-
| rowspan="4" |MV-MIPI-IMX178M
|3088(H) × 2064(V)
|
|Max size
|-
|5M
|
|
|-
|3M
|
|
|-
| 2M
|
|
|}
The actual frame rate can be less than the maximum frame rate and can be set to a decimal number.
To guarantee the camera frame rate, we specify that the maximum exposure time cannot be greater than [1/fps] seconds.
Related commands：maxwh，maxfps，fps。
==== ROI area ====
Only specific areas of the image can be transmitted by setting the camera's region of interest (ROI).
The parameters of the output region include the horizontal offset (x), vertical offset (y), width (w), and height (h) of the output region.
[x] ，[y]， [height] must be 4-aligned and [width] must be 8-aligned.
By default, the ROI area of the camera is the full resolution area of the sensor.
Related commands：roi.
===ISP===
===ISP===