mirror of
https://github.com/opencv/opencv.git
synced 2024-12-01 23:30:06 +08:00
61 lines
1.3 KiB
Python
Executable File
61 lines
1.3 KiB
Python
Executable File
"""
|
|
This script will compare tho images and decides with a threshold
|
|
if these to images are "equal enough"
|
|
"""
|
|
|
|
# import the necessary things for OpenCV
|
|
from cv import *
|
|
from highgui import *
|
|
|
|
import frames
|
|
import sys
|
|
import os
|
|
|
|
PREFIX=os.path.join(os.environ["srcdir"],"../../opencv_extra/testdata/python/images/")
|
|
|
|
|
|
DisplayImages=False
|
|
|
|
if DisplayImages:
|
|
videowindow="video"
|
|
referencewindow="reference"
|
|
cvNamedWindow(videowindow,CV_WINDOW_AUTOSIZE)
|
|
cvNamedWindow(referencewindow,CV_WINDOW_AUTOSIZE)
|
|
|
|
# returns True/False if match/non-match
|
|
def match( image, index, thres ):
|
|
|
|
# load image from comparison set
|
|
QCIFcompare=cvLoadImage(PREFIX+frames.QCIF[index])
|
|
|
|
if QCIFcompare is None:
|
|
print "Couldn't open image "+PREFIX+frames.QCIF[index]+" for comparison!"
|
|
sys.exit(1)
|
|
|
|
# resize comparison image to input image dimensions
|
|
size=cvSize(image.width,image.height)
|
|
compare=cvCreateImage(size,IPL_DEPTH_8U,image.nChannels)
|
|
cvResize(QCIFcompare,compare)
|
|
|
|
# compare images
|
|
diff=cvNorm( image, compare, CV_RELATIVE_L2 )
|
|
|
|
if DisplayImages:
|
|
cvShowImage(videowindow,image)
|
|
cvShowImage(referencewindow,compare)
|
|
if diff<=thres:
|
|
cvWaitKey(200)
|
|
else:
|
|
print "index==",index,": max==",thres," is==",diff
|
|
cvWaitKey(5000)
|
|
|
|
cvReleaseImage(QCIFcompare)
|
|
cvReleaseImage(compare)
|
|
|
|
if diff<=thres:
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
|