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comparison python/cvutils.py @ 685:94b291a5f933 dev

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several updates for display
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Fri, 05 Jun 2015 17:13:28 +0200
parents da1352b89d02
children 35bc5e30a53f
comparison
equal deleted inserted replaced
684:6d2ece4aed7c 685:94b291a5f933
124 return cv2.initUndistortRectifyMap(intrinsicCameraMatrix, array(distortionCoefficients), identity(3), newCameraMatrix, newImgSize, cv2.CV_32FC1) 124 return cv2.initUndistortRectifyMap(intrinsicCameraMatrix, array(distortionCoefficients), identity(3), newCameraMatrix, newImgSize, cv2.CV_32FC1)
125 125
126 def playVideo(filename, firstFrameNum = 0, frameRate = -1, interactive = False, printFrames = True, text = None, rescale = 1., step = 1): 126 def playVideo(filename, firstFrameNum = 0, frameRate = -1, interactive = False, printFrames = True, text = None, rescale = 1., step = 1):
127 '''Plays the video''' 127 '''Plays the video'''
128 windowName = 'frame' 128 windowName = 'frame'
129 cv2.namedWindow(windowName, cv2.WINDOW_NORMAL) 129 if rescale == 1.:
130 cv2.namedWindow(windowName, cv2.WINDOW_NORMAL)
130 wait = 5 131 wait = 5
131 if frameRate > 0: 132 if frameRate > 0:
132 wait = int(round(1000./frameRate)) 133 wait = int(round(1000./frameRate))
133 if interactive: 134 if interactive:
134 wait = 0 135 wait = 0
257 xCropMin = int(max(0, .5 * (xmin + xmax - a))) 258 xCropMin = int(max(0, .5 * (xmin + xmax - a)))
258 xCropMax = int(min(width - 1, .5 * (xmin + xmax + a))) 259 xCropMax = int(min(width - 1, .5 * (xmin + xmax + a)))
259 if yCropMax != yCropMin and xCropMax != xCropMin and (yCropMax - yCropMin) * (xCropMax - xCropMin) > minNPixels: 260 if yCropMax != yCropMin and xCropMax != xCropMin and (yCropMax - yCropMin) * (xCropMax - xCropMin) > minNPixels:
260 croppedImg = img[yCropMin : yCropMax, xCropMin : xCropMax] 261 croppedImg = img[yCropMin : yCropMax, xCropMin : xCropMax]
261 else: 262 else:
262 croppedImg = [] 263 croppedImg = None
263 return croppedImg, yCropMin, yCropMax, xCropMin, xCropMax 264 return croppedImg, yCropMin, yCropMax, xCropMin, xCropMax
264 265
265 266
266 def displayTrajectories(videoFilename, objects, boundingBoxes = {}, homography = None, firstFrameNum = 0, lastFrameNumArg = None, printFrames = True, rescale = 1., nFramesStep = 1, saveAllImages = False, undistort = False, intrinsicCameraMatrix = None, distortionCoefficients = None, undistortedImageMultiplication = 1.): 267 def displayTrajectories(videoFilename, objects, boundingBoxes = {}, homography = None, firstFrameNum = 0, lastFrameNumArg = None, printFrames = True, rescale = 1., nFramesStep = 1, saveAllImages = False, undistort = False, intrinsicCameraMatrix = None, distortionCoefficients = None, undistortedImageMultiplication = 1.):
267 '''Displays the objects overlaid frame by frame over the video ''' 268 '''Displays the objects overlaid frame by frame over the video '''
271 capture = cv2.VideoCapture(videoFilename) 272 capture = cv2.VideoCapture(videoFilename)
272 width = int(capture.get(cv2.cv.CV_CAP_PROP_FRAME_WIDTH)) 273 width = int(capture.get(cv2.cv.CV_CAP_PROP_FRAME_WIDTH))
273 height = int(capture.get(cv2.cv.CV_CAP_PROP_FRAME_HEIGHT)) 274 height = int(capture.get(cv2.cv.CV_CAP_PROP_FRAME_HEIGHT))
274 275
275 windowName = 'frame' 276 windowName = 'frame'
276 #cv2.namedWindow(windowName, cv2.WINDOW_NORMAL) 277 if rescale == 1.:
278 cv2.namedWindow(windowName, cv2.WINDOW_NORMAL)
277 279
278 if undistort: # setup undistortion 280 if undistort: # setup undistortion
279 [map1, map2] = computeUndistortMaps(width, height, undistortedImageMultiplication, intrinsicCameraMatrix, distortionCoefficients) 281 [map1, map2] = computeUndistortMaps(width, height, undistortedImageMultiplication, intrinsicCameraMatrix, distortionCoefficients)
280 if capture.isOpened(): 282 if capture.isOpened():
281 key = -1 283 key = -1