1. Go to the \ opencv \ Interfaces \ swig \ Python directory and run
Install Python setup-for-win.py
Install
2. After the installation is successful, you will find that the directory opencv is added under python26 \ Lib \ Site-packages, which should contain these files
Adaptors. py
Adaptors. PyC
Cn.bmp
Cn.bmp .jpg
Cv. py
Cv. PyC
Highgui. py
Highgui. PyC
Kalman. py
Kalman. PyC
Maid
MATLAB _ syntax.pyc
_ Cv. PYD
_ Highgui. PYD
_ Init _. py
_ Init _. PyC
The most important is the red file.
3. Write a test program
This program is used to test the repeatibility of autolighting. The main principle is to traverse all BMP images in the directory, calculate average and SD within a fixed ROI of these images, and generate an HTML file based on the statistical results.
1 import copy
2 Import OS, sys
3 Import opencv, highgui
4
5 class ROI:
6 def _ init _ (self, X, Y, W, h ):
7 self. x = x
8 self. Y = y
9 self. W = W
10 self. H = H
11
12def computesdandavg (filename, X, Y, W, h ):
13 IMG = opencv. highgui. cvloadimage (filename, 0)
14 sumimg = opencv. cv. cvgetsubrect (IMG, opencv. cv. cvrect (X, Y, W, H ))
15 AVG = opencv. cv. cvavg (sumimg)
16 mean = opencv. cv. cvscalar (0)
17 std_dev = opencv. cv. cvscalar (0)
18 opencv. cv. cvavgsdv (sumimg, mean, std_dev)
19
20 # modify image
21 IMG = opencv. highgui. cvloadimage (filename, 1)
22 opencv. CV. cvrectangle (IMG, opencv. CV. cvpoint (x, y), opencv. CV. cvpoint (x + W, Y + H), opencv. CV. cvscalar (0, 0, 255 ))
23 filenameout = filename + '.jpg'
24 opencv. highgui. cvsaveimage (filenameout, IMG)
25 # Return [filenameout, AVG [0]
26 return [filenameout, AVG [0], mean [0], std_dev [0] # Note: AVG = mean
27
28def printhtml (result, filename ):
29 fp = open (filename, "W ")
30
31 FP. Write ('<font color = Red >== image compare tool report ===</font> <br> \ n ')
32 # compute min-max AVG
33 A = copy. deepcopy (result)
34 A. Sort (lambda X, Y: int (X [1]-y [1])
35 FP. write ('avg min % F max % F diff % F <br> \ n' % (A [0] [1], a [-1] [1], -A [0] [1] + A [-1] [1])
36
37 # print table
38 FP. Write ('<Table border = 1> \ n ')
39 FP. write ('<tr> <TD> image </TD> <TD> AVG </TD> <TD> SD </TD> </tr> \ n ')
40 for RES in result:
41 FP. write ('<tr> <TD> </TD> <TD> % F, % F </TD> <TD> % F </TD> </tr> \ n' % (RES [0], Res [1], Res [2], res [3])
42 FP. Write ('</table> \ n ')
43 FP. Close ()
44
45top = r 'd: \ python26 \ Lib \ Site-packages \ opencv'
46 result = []
47 xywh = [1, 1, 10, 10]
48if Len (SYS. argv) = 5:
49 xywh = [int (sys. argv [1]), INT (sys. argv [2]), INT (sys. argv [3]), INT (sys. argv [4])]
50 else:
51 print "using default ROI"
52
53for root, dirs, files in OS. Walk (top, topdown = true ):
54
55 For name in files:
56 If name.lower().endswith('.bmp '):
57 fullpath = OS. Path. Join (root, name)
58 if Len (fullpath)> 20:
59 print fullpath [: 10] + ''+ fullpath [-10:]
60 else:
61 print fullpath
62 [filenameout, AVG, mean, std_dev] = computesdandavg (fullpath, xywh [0], xywh [1], xywh [2], xywh [3])
63 result. append ([filenameout, AVG, mean, std_dev])
64
65 for name in dirs:
66 # OS. rmdir (OS. Path. Join (root, name ))
67 pass
68 htmlfile = OS. Path. Join (top, 'result.html ')
69 print htmlfile
70 printhtml (result, htmlfile)
71os.system('assumer.exe "% s" '% htmlfile)
