Isolate Colors


# Load image
import cv2
import numpy as np
from matplotlib import pyplot as plt

Load Image

# Load image
image_bgr = cv2.imread('images/plane_256x256.jpg')

Convert To HSV Color Format

# Convert BGR to HSV
image_hsv = cv2.cvtColor(image_bgr, cv2.COLOR_BGR2HSV)

Create Mask

# Define range of blue values in HSV
lower_blue = np.array([50,100,50])
upper_blue = np.array([130,255,255])

# Create mask
mask = cv2.inRange(image_hsv, lower_blue, upper_blue)

Apply Mask

# Mask image
image_bgr_masked = cv2.bitwise_and(image_bgr, image_bgr, mask=mask)

Convert To RGB Format

# Convert BGR to RGB
image_rgb = cv2.cvtColor(image_bgr_masked, cv2.COLOR_BGR2RGB)

View Image

# Show image
plt.imshow(image_rgb), plt.axis("off")