Merge pull request #168 from luxonis/camera_video_example

Camera video example

Author: Erol444

docs/source/index.rst

@@ -91,15 +91,16 @@ Now, pick a tutorial or code sample and start utilizing Gen2 capabilities
    samples/17_video_mobilenet.rst
    samples/18_rgb_encoding_mobilenet.rst
    samples/21_mobilenet_decoding_on_device.rst
-   samples/22_1_tiny_tolo_v3_decoding_on_device.rst
-   samples/22_2_tiny_tolo_v4_decoding_on_device.rst
+   samples/22_1_tiny_yolo_v3_decoding_on_device.rst
+   samples/22_2_tiny_yolo_v4_decoding_on_device.rst
    samples/23_autoexposure_roi.rst
    samples/24_opencv_support.rst
    samples/25_system_information.rst
    samples/26_1_spatial_mobilenet.rst
    samples/26_2_spatial_mobilenet_mono.rst
    samples/26_3_spatial_tiny_yolo.rst
    samples/27_spatial_location_calculator.rst
+   samples/28_camera_video_example.rst
 
 .. toctree::
    :maxdepth: 1

docs/source/samples/22_1_tiny_yolo_v3_decoding_on_device.rst

@@ -1,4 +1,4 @@
-21 - RGB & TinyYoloV3 decoding on device
+22.1 - RGB & TinyYoloV3 decoding on device
 ==========================================
 
 This example shows how to run TinyYoloV3 on the RGB input frame, and how to display both the RGB

docs/source/samples/28_camera_video_example.rst

@@ -0,0 +1,21 @@
+28 - Camera video high resolution
+=================================
+
+This example shows how to use high resolution video at low latency. Compared to :ref:`01 - RGB Preview`, this demo outputs NV12 frames whereas
+preview frames are BGR and are not suited for larger resoulution (eg. 2000x1000). Preview is more suitable for either NN or visualization purposes.
+
+Setup
+#####
+
+.. include::  /includes/install_from_pypi.rst
+
+Source code
+###########
+
+Also `available on GitHub <https://github.com/luxonis/depthai-python/blob/develop/examples/28_camera_video_example.py>`__
+
+.. literalinclude:: ../../../examples/28_camera_video_example.py
+   :language: python
+   :linenos:
+
+.. include::  /includes/footer-short.rst

examples/28_camera_video_example.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+
+import cv2
+import depthai as dai
+import numpy as np
+
+# Start defining a pipeline
+pipeline = dai.Pipeline()
+
+# Define a source - color camera
+colorCam = pipeline.createColorCamera()
+colorCam.setBoardSocket(dai.CameraBoardSocket.RGB)
+colorCam.setResolution(dai.ColorCameraProperties.SensorResolution.THE_1080_P)
+colorCam.setVideoSize(1920, 1080)
+
+# Create output
+xoutVideo = pipeline.createXLinkOut()
+xoutVideo.setStreamName("video")
+
+colorCam.video.link(xoutVideo.input)
+
+# Pipeline defined, now the device is connected to
+with dai.Device(pipeline) as device:
+    # Start pipeline
+    device.startPipeline()
+    video = device.getOutputQueue(name="video", maxSize=1, blocking=False)
+
+    while True:
+        # Get preview and video frames
+        videoIn = video.get()
+
+        # Get BGR frame from NV12 encoded video frame to show with opencv
+        # Visualizing the frame on slower hosts might have overhead
+        cv2.imshow("video", videoIn.getCvFrame())
+
+        if cv2.waitKey(1) == ord('q'):
+            break

examples/CMakeLists.txt

@@ -136,3 +136,4 @@ add_python_example(26_2_spatial_mobilenet_mono 26_2_spatial_mobilenet_mono.py "$
 add_python_example(26_3_spatial_tiny_yolo_v3 26_3_spatial_tiny_yolo.py "${tiny_yolo_v3_blob}")
 add_python_example(26_3_spatial_tiny_yolo_v4 26_3_spatial_tiny_yolo.py "${tiny_yolo_v4_blob}")
 add_python_example(27_spatial_location_calculator 27_spatial_location_calculator.py)
+add_python_example(28_camera_video_example 28_camera_video_example.py)