contour_filters = [
ovl.area_filter(min_area_ratio=150),
ovl.straight_rectangle_filter(min_area_ratio=0.7),
ovl.area_sort()
]
director = ovl.Director(directing_function=ovl.x_center_directions,
failed_detection=9999,
target_amount=1)
camera = ovl.Camera(0, image_width=640, image_height=480)
roborio = ovl.NetworkTablesConnection(roborio=TEAM_NUMBER,
table_name="SmartDashboard",
table_key="vision_directions")
image_filters = [ovl.gaussian_blur((5, 5))]
red_square = ovl.Vision(threshold=threshold,
contour_filters=contour_filters,
director=director,
camera=camera,
image_filters=image_filters)
while True:
image = red_square.get_filtered_image()
contours, filtered_image = red_square.detect(image)
directions = red_square.get_directions(contours, filtered_image)
red_square.send(directions)
"""
A Simple program that display a rotated (180 degrees) and blurred (using gaussian blur) of the
live feed of the first (0) connected camera and utilizes the high-FPS realtime oriented Ovl Camera
"""
import ovl
CAMERA_PORT = 0
image_filters = [ovl.gaussian_blur(), ovl.rotate_image()]
pipeline = ovl.Vision(image_filters=image_filters,
camera=CAMERA_PORT,
ovl_camera=True)
while True:
image = pipeline.get_image()
blurred_image = pipeline.apply_image_filters(image)
ovl.display_image(blurred_image, display_loop=True)
import ovl
from ovl import display_contours
target_filters = [
ovl.percent_area_filter(minimal_percent=0.5),
ovl.circle_filter(min_area_ratio=0.5),
ovl.area_sort()
]
threshold = ovl.Color([20, 50, 50], [55, 255, 255])
yellow_circle = ovl.Vision(
threshold=threshold,
target_filters=target_filters,
camera=0, # open the first connected camera
image_filters=[ovl.gaussian_blur()])
while True:
image = yellow_circle.get_image()
targets, filtered_image = yellow_circle.detect(image)
directions = yellow_circle.get_directions(targets, filtered_image)
display_contours(filtered_image, targets, display_loop=True)
print(
directions) # prints out the (x, y) coordinates of the largest target
"""
A pipeline that detects the center of 6 purple hexagons
"""
import ovl
SERIAL_PORT = "/dev/ttyUSB1"
dark_purple = ovl.Color([130, 100, 70], [154, 255, 255])
image_filters = [ovl.gaussian_blur(), ovl.rotate_image(angle=90), ovl.adaptive_brightness(brightness=45)]
target_filters = [ovl.percent_area_filter(minimal_percent=0.03),
ovl.polygon_filter(side_amount=6, side_length_deviation=0.4, min_fill_ratio=0.6),
ovl.area_sort()]
direction_monitors = [ovl.StopIfCloseModifier(minimum_size=0.6, value_sent=5000)]
director = ovl.Director(direction_modifiers=direction_monitors,
target_selector=6,
failed_detection="Could not detect!",
directing_function=ovl.center_directions)
connection = ovl.SerialConnection(port=SERIAL_PORT)
pipeline = ovl.Vision(image_filters=image_filters,
target_filters=target_filters,
director=director,
camera=1,