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# ZED SDK 3.0

> **Note**
>
> Release notes of the ZED SDK 3.0 series. Patch releases are listed newest first. Download links and the full changelog, including ZED Tools and integrations, are available on the [ZED SDK 3.0 release page](https://www.stereolabs.com/developers/release/3.0).

## What's New

ZED SDK 3.0 is the first release that supports the brand new [ZED 2 camera](https://www.stereolabs.com/products/zed-2), improved in every way with wider angle optics, more accurate factory calibration, built-in new generation environmental and motion sensors and industrial grade mounting system and enclosure.

The SDK 3.0 also introduces new neural depth sensing, improved positional tracking, new AI-based object detection API that detects and tracks objects in 3D, image quality enhancement, performance improvements and a lot more features.

To update to 3.0 from previous 2.X versions, read the [migration guide](https://www.stereolabs.com/developers/release/3.0/migration-guide).

## 3.0.3

### SDK

* Fixed an issue with recording and streaming with ZED cameras that could lead to a crash of NVENC encoder.
* Added support in 3.0 for ZED stereo cameras with firmware 1142 on Windows.
* Fixed Ubuntu16 installer missing `turbojpeg` dependency.
* Fixed Qt5 OpenGL/SVG dependencies in Ubuntu installers.

## 3.0.2

### SDK

* Improved **Spatial mapping** performance by up to 200% on desktop and Jetson embedded platforms. Depth fusion is now much faster and the resulting model now refreshes in real-time on most platforms.
* Improved `DEPTH_MODE::PERFORMANCE`. It now benefits from neural depth estimation with improved accuracy, edges and cleaner data.
* Increased `DEPTH_MODE::PERFORMANCE` speed with a performance boost of up to 15%.
* Fixed a bug in `resetTracking` function. The yaw angle defined by the Transform parameter was not taken into account.
* Eliminated flickering in `VIEW::DEPTH` image when the scene has very low depth content.
* Fixed cuDNN reported version on JetPack 4.2. The model failed to run due to an incorrect reported version. It now works correctly.
* Removed `libturbojpeg-0-dev` dependency from Ubuntu 16 installer since the package is only available in Ubuntu 18.

## 3.0.1

*No ZED SDK changes in this release (ZED Tools and integrations updates only).*

## 3.0.0

### New Features

#### Object Detection

* Added a new module that detects and tracks objects in 2D and 3D, compatible with ZED 2.
* Added `enable`/`disableObjectDetection` and `retrieveObjects` functions.
* Added `ObjectData` class that contains detected object data, such as 2D and 3D bounding box, tracking information, dimensions and 2D mask.

#### Depth

* Introduced neural networks for depth estimation in `ULTRA` mode to improve stereo depth accuracy. Other modes will be updated in following SDK updates.
* Introduced new confidence filter that detects homogenous zones. Use `textureness_confidence_threshold` to remove noisy values in the depth map such as sky or untextured areas.

#### Video

* Added image enhancement setting to provide more vivid and accurate colors. Enabled by default in 3.0.
* Added image sharpness setting to improve sharpening of live and recorded videos.
* Updated SVO video format to store new sensors data.

#### Sensors

* Introduced new Sensor API to provide access to data from IMU, barometer, magnetometer and temperature sensors in the ZED 2.

#### Local Streaming

* Improved local network streaming of video data between sending and receiving host computers.
* Video Streaming API is not compatible between 2.8 and 3.0.

#### Docker

* Improved Docker support for all ZED SDK versions.
* Introduced lightweight `runtime` Docker images for deployment of Docker applications using the ZED SDK.
* Updated [StereoLabs DockerHub](https://hub.docker.com/r/stereolabs/zed/) repository with the new images.

#### Performance

* Improved speed of the Depth module by carefully optimizing critical functions on desktop and embedded platforms.
* Optimized image rectification pipeline.

#### Software Support

* Updated to C++14 (previously C++11)
* The new Object Detection module uses TensorRT and cuDNN to run efficiently on embedded platforms. The module is dynamically loaded from a separate sl_ai library to avoid the explicit dependency when using `sl_zed`.

#### Platforms

* Added support for CUDA 10.2 and JetPack 4.3.
* Dropped support for JetPack 3.3 and Windows 7. While ZED may still be used on Windows 7, it is not officially supported.

### Major 3.0 API Changes

Since there are a lot of changes compared to ZED SDK v2, a [migration guide](https://www.stereolabs.com/developers/release/3.0/migration-guide/) is available to help you switch easily from 2.8 to 3.0.

#### General

* Each enum is now an enum class (forced using `TYPE::VALUE`, instead of the current `TYPE::TYPE_VALUE` or even `TYPE_VALUE`).
* All deprecated functions/parameters/options have been removed.
* All libraries are now merged into `sl_zed` for clarity and ease of deployment.
* All headers are now merged into a single `sl/Camera.hpp`.
* `Camera::grab` is now blocking (guaranteed to return a new frame).

#### Functions

* **SaveAs** functions have been replaced by **Mat::write()**.
* Added getter functions to retrieve any module parameter from Camera, such as `getPositionalTrackingParameters`.
* Added static function `Camera::reboot()` to perform a hardware reset of the camera.

#### Video

* Resolution and FPS information have been moved to `Camera::getCameraInformation`.
* The `CAMERA_SETTINGS` enum is renamed to `VIDEO_SETTINGS`.
* Added `InitParameters::image_enhancement` for better black level correction, AWB adjustment and improved gamma curve
* Added `VIDEO_SETTINGS::SHARPNESS`, a digital two-pass sharpening control that improves image quality.
* Video recording is now automatically handled by the grab function, without having to explicitly call the `record()` function (now removed).
* Added a new `pauseRecording` function.
* Added `RecordingParameters` structure.
* Deprecated `RAW` and `LOSSY` compression modes. They have been removed from SDK recording options.
* `AVCHD` and `HEVC` have been renamed into `H264` and `H265`.

#### Sensors

* Added `SensorsData` class to store the data of all the other sensors present in the new ZED 2 which includes `BarometerData`, `TemperatureData`, `MagnetometerData` and `IMUData`. It also includes a state; `CAMERA_MOTION_STATE` which indicates if the camera is static, moving or falling.
* `Camera::getIMUData()` has been replaced by `Camera::getSensorsData()` to reflect the class update. It provides access to all the sensor values.

#### Depth

* Depth range and confidence parameters have been moved into `InitParameters`.
* Improved `ULTRA` mode with better accuracy and contours.

#### Positional Tracking

* Positional Tracking module function have been renamed to include "Positional" to differentiate it from object tracking. For instance: `Camera::enableTracking` is now `Camera::enablePositionalTracking`.
* Spatial memory has been renamed to Area memory for consistency with Area files (`enable_area_memory`, `saveAreaMap`)

#### Streaming

* Added `StreamingParameters::chunk_size` to select the maximum size of each transmitted packet and improve packet transmission.

#### Spatial Mapping

* Removed all deprecated Mesh functions. The overloaded `SpatialMap` functions that include support for both `Mesh` and `FusedPointCloud` should now be used.
* `extractWholeSpatialMap` is now smarter if a previously retrieved map is passed as an argument. It will retrieve only the difference between the initial and updated mesh.

#### Compatibility

* Streaming module is not compatible between 2.8 and 3.0.
* Due to a change in SVO metadata, SVOs recorded with 3.0 will only be compatible with SDK 2.8.4 and upwards.