# Wide dynamic range and electronic image stabilization
Source: [https://docs.qualcomm.com/doc/80-70020-50/topic/dynamic-range-and-image-stabilization.html](https://docs.qualcomm.com/doc/80-70020-50/topic/dynamic-range-and-image-stabilization.html)
The **gst-camera-shdr-ldc-eis-example** application shows the staggered high
dynamic range (sHDR), lens distortion correction (LDC), and electronic image stabilization
(EIS) camera imaging features. For more information, see [Overview of camera imaging features](https://docs.qualcomm.com/doc/80-70020-50/topic/dynamic-range-and-image-stabilization.html#dynamic-range-and-image-stabilization__section_em1_gjq_pcc).
Note: This sample application isn't supported on Dragonwing
IQ-8275 and Dragonwing IQ-9075.
The following figure shows the pipeline, where the input is received from the camera and
the output is displayed using Waylandsink. For more information about the pipeline, see
[Pipeline flow](https://docs.qualcomm.com/doc/80-70020-50/topic/dynamic-range-and-image-stabilization.html#dynamic-range-and-image-stabilization__section_f1t_5wf_mcc).
## Prerequisites
- [Get started with the Qualcomm IM SDK](https://docs.qualcomm.com/bundle/publicresource/topics/80-70020-51/install-sdk.html)
for your Qualcomm Linux 1.5 or Ubuntu Server.
- Activate SSH on your Qualcomm Linux or Ubuntu to sign in with SSH and connect to
the target device. For instructions see:
- [Sign in using SSH](https://docs.qualcomm.com/bundle/publicresource/topics/80-70020-254/how_to.html#use-ssh) for Qualcomm
Linux
- [Sign in using SSH](https://docs.qualcomm.com/bundle/publicresource/topics/80-90441-1/Use_Ubuntu_on_RB3_Gen2_3.html#sign-in-to-the-rb3-gen-2-console-using-ssh) for Ubuntu
Server
Note: If SSH is already set up and Wi-Fi is
connected, skip this step.
- Use the HDMI port to connect the display to the device. For instructions, see
[Set up HDMI display](https://docs.qualcomm.com/bundle/publicresource/topics/80-70020-18/samples.html).
- Sign in to the target device using SSH.
- In the terminal of the target device, run the following commands from the SSH
shell of the target device to activate the display on the host computer:
- For
Linux:
export XDG_RUNTIME_DIR=/dev/socket/weston && export WAYLAND_DISPLAY=wayland-1Copy to clipboard
- For Ubuntu Server:
export XDG_RUNTIME_DIR=/run/user/$(id -u ubuntu)/ && export WAYLAND_DISPLAY=wayland-1 Copy to clipboard
- Connect the speaker to activate the audio on the target device. For
instructions, see [Set up audio hardware](https://docs.qualcomm.com/bundle/publicresource/topics/80-70020-16/enable-audio.html).
If you face
issues in recording the audio, run the following command in the terminal of
the target
device:
pactl set-default-source pal_source_speaker_micCopy to clipboard
- If you face issues with the camera or display, see [Camera troubleshooting](https://docs.qualcomm.com/bundle/publicresource/topics/80-70020-17/troubleshooting.html) and [Display troubleshooting](https://docs.qualcomm.com/bundle/publicresource/topics/80-70020-18/debug.html).
- For sHDR, ensure that the Sensor mode for Digital Overlap mode is enabled and
tuned.
- For LDC and EIS, ensure that the sensor and hardware are tuned.
## Run the application
1. In the terminal of the target device, run the respective command for any of the
following use cases to display the output:
- sHDR
gst-camera-shdr-ldc-eis-example -s 1 -w 1920 -h 1080Copy to clipboard
- Note: This use case isn't supported on the Ubuntu
Server.
- LDC
gst-camera-shdr-ldc-eis-example -l 1 -w 1920 -h 1080Copy to clipboard
- EIS
gst-camera-shdr-ldc-eis-example -e 1 -w 1920 -h 1080Copy to clipboard
2. To stop the use case, use CTRL +
C.
3. In the terminal of the target device, run the following command in the SSH shell
to display the available help
options:
gst-camera-shdr-ldc-eis-example --helpCopy to clipboard
## Expected output
- sHDR
Figure : Output without sHDR
Figure : Output with sHDR
- LDC
Figure : Output without LDC
Figure : Output with LDC
## Pipeline flow
The following table lists the plugins used in the
gst-camera-shdr-ldc-eis-example pipeline:| Plugin | Description |
| --- | --- |
| [qtiqmmfsrc](https://docs.qualcomm.com/doc/80-70020-50/topic/qtiqmmfsrc.html) | Captures the camera feed and sends it to the capsfilter. |
| Capsfilter | Passes the feed for display. |
| [Waylandsink](https://docs.qualcomm.com/doc/80-70020-50/topic/waylandsink.html) | Shows the output on the Wayland display. |
## Overview of camera imaging features
The following table provides a brief description of the supported imaging
features.
Table : Camera imaging features
| Feature | Description |
| :--- | :--- |
| sHDR |
The video high dynamic range feature is supported on camera sensors that operate in the Digital Overlap mode.
The fusion of the low and high exposure frames is enabled in the processor GPU.
Use the sHDR flag to enable the sHDR mode.
|
| LDC |
A GPU-based LDC algorithm is supported to rectify barrel distortion artifacts that are inherent with wide field of vision (FoV) lens.
Use the LDC flag to enable the LDC mode.
|
| EIS |
A GPU-based EIS algorithm is supported.
Use the EIS flag to enable the EIS mode.
|
For further information on each feature, see [Enhance camera output](https://docs.qualcomm.com/bundle/publicresource/topics/80-70020-17/enhance-camera-output.html).
**Parent Topic:** [Run sample applications for a camera](https://docs.qualcomm.com/doc/80-70020-50/topic/camera-sample-applications.html)
Last Published: Jan 30, 2026
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