simple_blob_detection_sardine.py

import cv2

cap = cv2.VideoCapture(0)

while True:
    _, frame = cap.read()
    hsvMin = (20,120,120)
    hsvMax = (49,255,255)
    hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)

    mask = cv2.inRange(hsv, hsvMin, hsvMax)

    # Erode and dilate
    mask = cv2.erode(mask, None, iterations=3)
    mask = cv2.dilate(mask, None, iterations=3)

    params = cv2.SimpleBlobDetector_Params()
    params.minThreshold = 0;
    params.maxThreshold = 100;
 
    # Filter by Area.
    params.filterByArea = True
    params.minArea = 400
    params.maxArea = 20000

    # Filter by Circularity
    params.filterByCircularity = False
    params.minCircularity = 0.1
    detector = cv2.SimpleBlobDetector(params)
    reversemask = 255-mask
    keypoints = detector.detect(reversemask)
    x = keypoints[0]pt[0]
    y = keypoints[0].pt[1]
    
    @swim
    def baba():
        #here I want to use ‘x’ and ‘y’ values
        Pa >> d('bip:0~50' if x > 0.5 else 'jupbass:1~20',  
            midinote='<Do|Sol3|Sol4, Mib|Mib5, Sol|Sol6, Lab>^(-3~-1)',
            amp=0.3, orbit=2, room='0.7', dry=0.2, size=0.8, # cut='1|0|0|0', 
            cut=1, shape=0.5, speed='1~3, 1, 0.5', 
            p='(0.25/2)!2,0.25,0.25!2', span=2)
        Pc >> d('bip:0~50', midinote='Do3', amp=0.3, orbit=2, room='0.7',
            dry=0.2, size=0.8, cut='1|0|0|0', shape=0.5, speed='1~3, 1, 0.5', 
            p='(0.25/2)!2,0.25,0.25!2', span=2)
        Pe >> d('b!3, b:2', span=1, shape=0.5, amp=0.6, 
            delay=0.45, delaytime=1/3, delayfeedback=0.25)
        Pf >> d('b:3~10, c:1~20', span=0.5, legato=0.125, room=0.8,
            shape=0.5, amp=0.2, orbit=3, cut=1,)
        again(baba)

    key = cv2.waitKey(1)
    if key == 27:
        break