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pythonopencvimage-processingflood-fill
Mr. x
Mr. x

Reputation: 25

floodFill inverted fill

Edit: i just want to change black pixel outside hull to white while keeping the black pixel inside hull.

contours, hierarchy = cv.findContours(morph, cv.RETR_EXTERNAL, cv.CHAIN_APPROX_NONE)
    mask = np.zeros_like(frame)

    
    for hull in [cv.convexHull(cnt) for cnt in contours]:
        cv.drawContours(mask, [hull], -1, (255, 255, 255), -1)

   
    inverted= cv.bitwise_not(mask)
    k = cv.bitwise_or(mask, inverted)

    return k

example result

just like this example img, i want to change the outside of hull to white and keeping the black inside it. Like the image above. But when i tried it show all white pixel and the black pixel inside hull also get white

Upvotes: 0

Views: 152

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