Python OpenCV 简单图像比较

项目需要做两张图像比较的差，感觉Python用起来很方便，手头正好有OpenCV。红绿代表插值正负，为了更好的可视化，差值均放大10倍显示。

def clmap(v, k, upBound): 
    #mul and clamp


  

     val = v * k
   


  
if


  
return


  
else:
   


  
return


  
 
   


  
 
   


  
'B_Tri.bmp' 
    #


  
'B_RT.bmp' 
    #


  
 
   


  
'dif_'


  
 
   


  
# read as color image


  

    img_2 = cv2.imread(inImage_2)
   


  
 
   


  

    dif = img_1.copy()
   


  
# dif image for show only


  
 
   


  
0] 
    #get width


  
1] 
    #get height


  
 
   


  
for i 
    in


  
for j 
    in


  
#dif[i, j] = [128,0,0] # b g r


  
#print img_1[i,j]-img_2[i,j]


  
 
   


  
0])-int(img_2[i,j][
    0])
   


  
 
   


  
if diff < 
    0:
   


  
0,clmap(abs(diff), 
    10, 
    255), 
    0]
   


  
 
   


  
elif diff > 
    0:
   


  
0, 
    0, clmap(abs(diff), 
    10, 
    255)]
   


  
else:
   


  
0]
   


  
 
   


  
3


  
 
   


  
print


  
print 
    'different data:'


  
print 
    'max : ', dif.max()
   


  
print 
    'min : ', dif.min()
   


  
print 
    'mean : ', dif.mean()
   


  
 
   


  
 
   


  

    cv2.imwrite(dif_img, show_dif)
   


  
 
   


  
 
   


  
'_dif',show_dif)
   


  
0)
   


  

    cv2.destroyAllWindows()

image1

image2

dif