mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
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61 lines
1.3 KiB
61 lines
1.3 KiB
15 years ago
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"""
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This script will compare tho images and decides with a threshold
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if these to images are "equal enough"
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"""
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# import the necessary things for OpenCV
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from cv import *
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from highgui import *
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import frames
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import sys
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import os
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PREFIX=os.path.join(os.environ["srcdir"],"../../opencv_extra/testdata/python/images/")
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DisplayImages=False
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if DisplayImages:
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videowindow="video"
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referencewindow="reference"
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cvNamedWindow(videowindow,CV_WINDOW_AUTOSIZE)
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cvNamedWindow(referencewindow,CV_WINDOW_AUTOSIZE)
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# returns True/False if match/non-match
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def match( image, index, thres ):
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# load image from comparison set
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QCIFcompare=cvLoadImage(PREFIX+frames.QCIF[index])
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if QCIFcompare is None:
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print "Couldn't open image "+PREFIX+frames.QCIF[index]+" for comparison!"
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sys.exit(1)
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# resize comparison image to input image dimensions
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size=cvSize(image.width,image.height)
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compare=cvCreateImage(size,IPL_DEPTH_8U,image.nChannels)
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cvResize(QCIFcompare,compare)
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# compare images
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diff=cvNorm( image, compare, CV_RELATIVE_L2 )
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if DisplayImages:
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cvShowImage(videowindow,image)
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cvShowImage(referencewindow,compare)
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if diff<=thres:
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cvWaitKey(200)
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else:
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print "index==",index,": max==",thres," is==",diff
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cvWaitKey(5000)
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cvReleaseImage(QCIFcompare)
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cvReleaseImage(compare)
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if diff<=thres:
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return True
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else:
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return False
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