test for nice switch between frames ok

test/weighted_images.py

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+"""
+.. module:: weighted_images
+   :platform: Unix, Windows
+   :synopsis: Basic test script aiming at testing the possibility to use inter frames between images to enhance video output
+
+.. moduleauthor:: Julien Lengrand-Lambert <jlengrand@gmail.com>
+
+"""
+import sys
+
+import cv
+
+image1 = "../data/inputs/moi/DSC04858.jpg"
+image2 = "../data/inputs/moi/DSC04882.jpg"
+
+delay = 00
+
+# input images
+im1 = cv.LoadImage(image1)
+im2 = cv.LoadImage(image2)
+
+# cv.NamedWindow("im1", cv.CV_WINDOW_NORMAL)
+# cv.NamedWindow("im2", cv.CV_WINDOW_NORMAL)
+
+# cv.ResizeWindow("im1", 640, 480)
+# cv.ResizeWindow("im2", 640, 480)
+
+# cv.MoveWindow("im1", 0, 0)
+# cv.MoveWindow("im2", 640, 0)
+
+# cv.ShowImage("im1", im1)
+# cv.ShowImage("im2", im2)
+
+# weighted images
+
+filename = "../data/output/weighted.avi"
+# Codec is OS dependant.
+# FIXME : Find an unified version
+if "win" in sys.platform:
+    fourcc = cv.CV_FOURCC('C', 'V', 'I', 'D')
+else: # some kind of Linux/Unix platform
+	fourcc = cv.CV_FOURCC('F', 'M', 'P', '4')
+
+fps = 5
+frameSize = cv.GetSize(im1)
+my_video = cv.CreateVideoWriter(filename, 
+                              fourcc, 
+                              fps, 
+                              frameSize,
+                              1)
+
+num_inter_im = 10
+step = float(1)/10 
+
+for i in range(num_inter_im + 1 ):
+	print i
+	im3 = cv.CreateImage(cv.GetSize(im1), im1.depth, im1.nChannels)
+	alpha = step * i
+	beta = 1 - alpha
+	gamma = 0
+	cv.AddWeighted(im1, alpha, im2, beta, gamma, im3) 
+	cv.WriteFrame(my_video, im3)
+
+# cv.NamedWindow("im3", cv.CV_WINDOW_NORMAL)
+# cv.ResizeWindow("im3", 640, 480)
+# cv.MoveWindow("im3", 640, 500)
+# cv.ShowImage("im3", im3)
+
+# cv.WaitKey(delay)