AttributeError:模块“scipy.stats”没有属性“signaltonoise”

Question

我正在使用scipy signaltonoise函数，下面是代码，但它返回一个错误。我也在github中搜索了这个，但没有找到。你能帮忙吗

import numpy as np
import cv2
import math
import os
import csv
from scipy import stats 
from PIL import Image
from skimage.color import rgb2gray
from multiprocessing import Pool
from skimage.feature import local_binary_pattern # Local Binary Pattern function
from scipy.stats import itemfreq # To calculate a normalized histogram
import scipy.stats as sp
from skimage.feature import hog
from scipy.ndimage.measurements import label
from scipy import signal as sg




def calc_snr(img):
    snr = stats.signaltonoise(img, axis=None)
    return snr


 snr = calc_snr(img)

Answer 1

scipy.stats.signaltonoise()在1.0.0中被deprecated in scipy 0.16.0删除。如果您需要在不降级scipy的情况下使用该函数，则可以在githubhere上删除该函数之前查看该函数的原始代码，并在下面进行复制：

import numpy as np
def signaltonoise(a, axis=0, ddof=0):
    a = np.asanyarray(a)
    m = a.mean(axis)
    sd = a.std(axis=axis, ddof=ddof)
    return np.where(sd == 0, 0, m/sd)