README.md

Answer to StackOverflow Question: Problem in returning images in Python for LabVIEW

https://stackoverflow.com/questions/73088924/problem-in-returning-images-in-python-for-labview/73098534

FP.png

RGB.png

Threshold-RGB-Out.vi

threshold.py

import numpy as np
import cv2

def threshold(data):

    gray = np.array(data,dtype=np.uint8)
    # perform threshold operation
    ret, thresh1 = cv2.threshold(gray, 150, 255, cv2.THRESH_BINARY)

    #
    # create an RGB image to demonstrate output
    #
    height = 200
    width = 300

    rgb = np.zeros((height,width,3), np.uint8)
    # create RGB verticle stripes
    # note cv2 channels are arranged BGR
    # red stripe
    rgb[:,0:width//3] = (0,0,255)
    # green stripe
    rgb[:,width//3:2*width//3] = (0,255,0)
    # blue stripe
    rgb[:,2*width//3:width] = (255,0,0)

    # return rgb 3d-array
    return rgb