PiCapture Interface PiCapture SD1 with Nvidia Jetson Nano Reply To: Interface PiCapture SD1 with Nvidia Jetson Nano

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bjtomasic
Participant

# MIT License
# Copyright (c) 2019 JetsonHacks
# See license
# Using a CSI camera (such as the Raspberry Pi Version 2) connected to a
# NVIDIA Jetson Nano Developer Kit using OpenCV
# Drivers for the camera and OpenCV are included in the base image

import cv2

# gstreamer_pipeline returns a GStreamer pipeline for capturing from the CSI camera
# Defaults to 1280×720 @ 60fps
# Flip the image by setting the flip_method (most common values: 0 and 2)
# display_width and display_height determine the size of the window on the screen

def gstreamer_pipeline(
#capture_width=1280,
capture_width=640,
#capture_height=720,
capture_height=480,
#display_width=1280,
display_height=640,
#display_height=720,
display_width=480,
framerate=60,
flip_method=0,
):
return (
“nvarguscamerasrc ! ”
“video/x-raw(memory:NVMM), ”
“width=(int)%d, height=(int)%d, ”
“format=(string)NV12, framerate=(fraction)%d/1 ! ”
“nvvidconv flip-method=%d ! ”
“video/x-raw, width=(int)%d, height=(int)%d, format=(string)BGRx ! ”
“videoconvert ! ”
“video/x-raw, format=(string)BGR ! appsink”
% (
capture_width,
capture_height,
framerate,
flip_method,
display_width,
display_height,
)
)

def show_camera():
# To flip the image, modify the flip_method parameter (0 and 2 are the most common)
print(gstreamer_pipeline(flip_method=0))
cap = cv2.VideoCapture(gstreamer_pipeline(flip_method=0), cv2.CAP_GSTREAMER)
if cap.isOpened():
window_handle = cv2.namedWindow(“CSI Camera”, cv2.WINDOW_AUTOSIZE)
# Window
while cv2.getWindowProperty(“CSI Camera”, 0) >= 0:
ret_val, img = cap.read()
cv2.imshow(“CSI Camera”, img)
# This also acts as
keyCode = cv2.waitKey(30) & 0xFF
# Stop the program on the ESC key
if keyCode == 27:
break
cap.release()
cv2.destroyAllWindows()
else:
print(“Unable to open camera”)

if __name__ == “__main__”:
show_camera()

bjtomasicReply To: Interface PiCapture SD1 with Nvidia Jetson Nano