Introduction

The ZED is a 2K stereo camera with dual 4MP RGB sensors, a 110° field of view and ƒ/2.0 aperture. The ZED streams uncompressed video at up to 100 FPS in WVGA format. It is an UVC-compliant USB 3.0 camera backwards compatible with USB 2.0.

Selecting a Video Mode

The left and right video frames are synchronized and streamed as a single uncompressed video frame in side-by-side format. You can change video resolution and framerate in the ZED Explorer or using the API.

There are several video modes available:

Video Mode Output Resolution (side by side) Frame Rate (fps) Field of View
2.2K 4416x1242 15 Wide
1080p 3840x1080 30, 15 Wide
720p 2560x720 60, 30, 15 Extra Wide
WVGA 1344x376 100, 60, 30, 15 Extra Wide

Selecting a View

The ZED outputs images in different formats. You can select between rectified, unrectified and grayscale images:

  • Left view
  • Right view
  • Side-by-side view
  • Left or Right Unrectified
  • Left or Right Grayscale

For more information on how to access these views, see Video Capture.

Adjusting Camera Settings

The ZED camera features an onboard ISP (Image Signal Processor) that performs various image processing algorithms on the raw image captured by the dual image sensors. Several parameters of the ISP can be adjusted directly from the ZED Explorer app or through the ZED SDK:

  • Resolution
  • FPS
  • Brightness – Controls image brightness.
  • Contrast – Controls image contrast.
  • Hue – Controls image color.
  • Saturation – Controls image color intensity.
  • Gamma – Controls gamma correction.
  • White Balance – Controls camera white balance.
  • Exposure – Controls shutter speed. Setting a long exposure time lead to an increase in blur.
  • Gain – Controls digital amplification of the signal from the camera sensor.

When the camera is in ‘Auto’ mode, parameters such as exposure, gain and white balance are automatically adjusted depending on the scene.

Video Recording

The ZED is a UVC-compliant USB camera so you can use any third-party software to capture stereo video in MP4 or AVI format. To benefit from the features of the ZED SDK, videos need to be recorded in Stereolabs SVO format. When loading SVO files, the ZED API and applications will behave as if a ZED was connected and live feed was available. Every module of the ZED API will be available: depth, tracking, spatial mapping and more. SVO videos can be recored uncompressed to preserve image quality or compressed to reduce file size.

To record SVO videos, use the ZED Explorer application either in GUI or command-line mode. Given the size of SVO files, we recommend using a high-performance SSD for recording SVO.

For more information on capturing, playing and converting AVI and SVO video files, see the Recording samples on GitHub.