How to restore the options to default values?

[MyZQL]

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Required Info
Camera Model	D435
Firmware Version	05.13.00.50
Operating System & Version	Linux (Ubuntu 20LTS)
Kernel Version (Linux Only)	5.11
Platform	PC
SDK Version	pyrealsense 2.50
Language	python
Segment	Others

Issue Description

How can I restore the options to default values via pyrealsense API after I change some of them such as:
color_sensor.set_option(rs.option.exposure, 1000)
color_sensor.set_option(rs.option.gain, 50)
......

[MartyG-RealSense]

Hi @ZhongQingliang You could set the defaults for the 400 Series cameras manually for specific options that you have changed. If you launch the RealSense Viewer program and examine the settings of the options without altering them, they are typically the default values of that camera model.

For example, the RGB defaults are 156 for exposure and 64 for gain.

Alternatively, you could try performing a reset of the camera using the hardware_reset() instruction. A simple example Python code snippet is shown below.

ctx = rs.context()
devices = ctx.query_devices()
for dev in devices:
dev.hardware_reset()

#8393 has an example of Python code that might be more suited to your application, where the reset is placed within a function that is called, so that you can activate the reset precisely when you need to by calling the function name.

[Nir-Az]

Hi @ZhongQingliang ,

Like @MartyG-RealSense said, hardware_reset() resets most of the option into their default values

If you want to set to default during runtime this should work:

option = rs.option.exposure
option_range = color_sensor.get_option_range(option)
value_to_set = option_range.default
color_sensor.set_option(option, value_to_set)

[MartyG-RealSense]

Hi @ZhongQingliang Do you require further assistance with this case, please? Thanks!

[MartyG-RealSense]

Case closed due to no further comments received.