hi im working in Matching Features with ORB python opencv but when i run this code i get this error
Traceback (most recent call last):
ValueError: could not broadcast input array from shape () into shape ()
i don't know how to fix it
> import numpy as np import cv2 import> time>> ESC=27 > camera = cv2.VideoCapture(0)> orb = cv2.ORB_create()> bf = cv2.BFMatcher(cv2.NORM_HAMMING,> crossCheck=True)>> imgTrainColor = cv2.imread('/home/shar/home.jpg')> imgTrainGray = cv2.cvtColor(imgTrainColor,> cv2.COLOR_BGR2GRAY)>> kpTrain = orb.detect(imgTrainGray,None)> kpTrain, desTrain = orb.compute(imgTrainGray, kpTrain)>> firsttime = True>> while True:>> ret, imgCamColor = camera.read()> imgCamGray = cv2.cvtColor(imgCamColor,> cv2.COLOR_BGR2GRAY)> kpCam = orb.detect(imgCamGray,None)> kpCam, desCam = orb.compute(imgCamGray, kpCam)> bf = cv2.BFMatcher(cv2.NORM_HAMMING,> crossCheck=True)> matches = bf.match(desCam,desTrain)> good = []> for m,n in matches:> if m.distance < 0.7*n.distance:> good.append(m)>> if firsttime==True:> h1, w1 = imgCamColor.shape[:2]> h2, w2 = imgTrainColor.shape[:2]> nWidth = w1+w2> nHeight = max(h1, h2)> hdif = (h1-h2)/2> firsttime=False>> result = np.zeros((nHeight, nWidth, 3), np.uint8)> result[hdif:hdif+h2, :w2] = imgTrainColor> result[:h1, w2:w1+w2] = imgCamColor>> for i in range(len(matches)):> pt_a=(int(kpTrain[matches[i].trainIdx].pt[0]),> int(kpTrain[matches[i].trainIdx].pt[1]+hdif))> pt_b=(int(kpCam[matches[i].queryIdx].pt[0]+w2),> int(kpCam[matches[i].queryIdx].pt[1]))> cv2.line(result, pt_a, pt_b, (255, 0, 0))>> cv2.imshow('Camara', result)>> key = cv2.waitKey(20) > if key == ESC:> break>> cv2.destroyAllWindows()> camera.release()
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