我正在尝试将一个图像与另一个文件的所有图像进行比较,得到差异百分比并打印最小差异百分比的文件名....如果我尝试将输出差异附加到列表...我得到错误说"浮动值不能迭代" ....这就是我到目前为止所做的......
from itertools import izip
import os
import numpy as np
import cv2
from matplotlib import pyplot as plt
from PIL import Image
import math
res = 0
def take_and_save_picture(im_save):
'''Take a picture and save it
Args:
im_save: filepath where the image should be stored
'''
camera_port = 0
ramp_frames = 30
cap = cv2.VideoCapture(camera_port)
def get_image():
retval, im = cap.read()
return im
for i in xrange(ramp_frames):
temp = get_image()
print("Taking image...")
# Take the actual image we want to keep
camera_capture = get_image()
#im_save_tmp = im_save + '.jpg'
im_save_tmp = im_save
# A nice feature of the imwrite method is that it will automatically choose the
# correct format based on the file extension you provide. Convenient!
cv2.imwrite(im_save_tmp, camera_capture)
# You'll want to release the camera, otherwise you won't be able to create a new
# capture object until your script exits
# del(cap)
img1 = cv2.imread(im_save_tmp, 0)
edges = cv2.Canny(img1, 100, 200)
cv2.imwrite(im_save, edges)
cv2.waitKey(0)
cv2.destroyAllWindows()
def re(path1,path2):
#path1 = raw_input("Enter the path1:")
#path2 = raw_input("Enter the path2:")
i2= Image.open(path2)
listing = os.listdir(path1)
for file in listing:
i1 = Image.open(path1 + file)
assert i1.mode == i2.mode, "Different kinds of images."
assert i1.size == i2.size, "Different sizes."
pairs = izip(i1.getdata(), i2.getdata())
if len(i1.getbands()) == 1:
# for gray-scale jpegs
dif = sum(abs(p1-p2) for p1,p2 in pairs)
else:
dif = sum(abs(c1-c2) for p1,p2 in pairs for c1,c2 in zip(p1,p2))
ncomponents = i1.size[0] * i1.size[1] * 3
res = (dif / 255.0 * 100) / ncomponents
print "Difference (percentage):", res
def main():
capture_img = "/Users/Me/Documents/python programs/New/pro.png"
#img_to_compare = "/Users/Me/Documents/python programs/compare/img2.jpg"
take_and_save_picture(capture_img)
path1 = "/Users/Me/Documents/python programs/New/numbers1/"
path2 = "/Users/Me/Documents/python programs/New/pro.png"
re(path1,path2)
if __name__ == '__main__':
main()
输出是差异
Difference (percentage): 2.52484809028
Difference (percentage): 2.64822048611
Difference (percentage): 2.64822048611
Difference (percentage): 3.55436197917
我进入的价值" res"必须存储在列表中,并且应该找到并打印最小值....请给我一些代码...对python来说是全新的...谢谢...
答案 0 :(得分:1)
You're code must be like this:
#######
list_dif = []
def re(path1,path2):
#path1 = raw_input("Enter the path1:")
#path2 = raw_input("Enter the path2:")
i2= Image.open(path2)
listing = os.listdir(path1)
for file in listing:
i1 = Image.open(path1 + file)
assert i1.mode == i2.mode, "Different kinds of images."
assert i1.size == i2.size, "Different sizes."
pairs = izip(i1.getdata(), i2.getdata())
if len(i1.getbands()) == 1:
# for gray-scale jpegs
dif = sum(abs(p1-p2) for p1,p2 in pairs)
else:
dif = sum(abs(c1-c2) for p1,p2 in pairs for c1,c2 in zip(p1,p2))
ncomponents = i1.size[0] * i1.size[1] * 3
#######
for n in range(ncomponents):
res = (dif / 255.0 * 100) / (ncomponents + 1)
list_dif.append(res)
print "Difference (percentage):", list_dif
答案 1 :(得分:0)
这样的东西?
def re(path1,path2):
#path1 = raw_input("Enter the path1:")
#path2 = raw_input("Enter the path2:")
i2= Image.open(path2)
listing = os.listdir(path1)
res = []
for file in listing:
i1 = Image.open(path1 + file)
assert i1.mode == i2.mode, "Different kinds of images."
assert i1.size == i2.size, "Different sizes."
pairs = izip(i1.getdata(), i2.getdata())
if len(i1.getbands()) == 1:
# for gray-scale jpegs
dif = sum(abs(p1-p2) for p1,p2 in pairs)
else:
dif = sum(abs(c1-c2) for p1,p2 in pairs for c1,c2 in zip(p1,p2))
ncomponents = i1.size[0] * i1.size[1] * 3
res.append((dif / 255.0 * 100) / ncomponents)
print "Difference (percentage):", res
minimum = min(res) # Find minimum value in res
print(minimum)