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comparison python/cvutils.py @ 393:eaf7765221d9

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added code to create bounding boxes and display them (inc scripts)
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Fri, 26 Jul 2013 02:12:08 -0400
parents 1917db662aa7
children 167f6ec44ec5
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392:dd4970f4221f 393:eaf7765221d9
154 cv2.imwrite('image{0:04d}.png'.format(numImg), img) 154 cv2.imwrite('image{0:04d}.png'.format(numImg), img)
155 else: 155 else:
156 images.append(img) 156 images.append(img)
157 return images 157 return images
158 158
159 def displayTrajectories(videoFilename, objects, homography = None, firstFrameNum = 0, lastFrameNumArg = None, printFrames = True, rescale = 1.): 159 def displayTrajectories(videoFilename, objects, boundingBoxes, homography = None, firstFrameNum = 0, lastFrameNumArg = None, printFrames = True, rescale = 1.):
160 '''Displays the objects overlaid frame by frame over the video ''' 160 '''Displays the objects overlaid frame by frame over the video '''
161 capture = cv2.VideoCapture(videoFilename) 161 capture = cv2.VideoCapture(videoFilename)
162 if capture.isOpened(): 162 if capture.isOpened():
163 key = -1 163 key = -1
164 ret = True 164 ret = True
180 if homography != None: 180 if homography != None:
181 obj.projectedPositions = obj.positions.project(homography) 181 obj.projectedPositions = obj.positions.project(homography)
182 else: 182 else:
183 obj.projectedPositions = obj.positions 183 obj.projectedPositions = obj.positions
184 draw(img, obj.projectedPositions, cvRed, frameNum-obj.getFirstInstant()) 184 draw(img, obj.projectedPositions, cvRed, frameNum-obj.getFirstInstant())
185 if frameNum in boundingBoxes.keys():
186 for rect in boundingBoxes[frameNum]:
187 cv2.rectangle(img, rect[0].asint().astuple(), rect[1].asint().astuple(), cvRed)
185 cv2.putText(img, '{0}'.format(obj.num), obj.projectedPositions[frameNum-obj.getFirstInstant()].asint().astuple(), cv2.FONT_HERSHEY_PLAIN, 1, cvRed) 188 cv2.putText(img, '{0}'.format(obj.num), obj.projectedPositions[frameNum-obj.getFirstInstant()].asint().astuple(), cv2.FONT_HERSHEY_PLAIN, 1, cvRed)
186 cvImshow('frame', img, rescale) 189 cvImshow('frame', img, rescale)
187 key = cv2.waitKey() 190 key = cv2.waitKey()
188 if saveKey(key): 191 if saveKey(key):
189 cv2.imwrite('image.png', img) 192 cv2.imwrite('image.png', img)