from skimage.transform import pyramid_gaussian
from sklearn.externals import joblib
from skimage import color
from skimage import io
from imutils.object_detection import non_max_suppression
import imutils
import numpy as np
import cv2
import os
import glob
orientations = 9
pixels_per_cell = (8, 8)
cells_per_block = (2, 2)
threshold = .3
def sliding_window(image, stepSize, windowSize):
for y in range(0, image.shape[0], stepSize):
for x in range(0, image.shape[1], stepSize):
yield (x, y, image[y: y + windowSize[1], x:x + windowSize[0]])
model = joblib.load('model_name.npy')
scale = 0
detections = []
img= cv2.imread("pos\56_resized.jpg")
(winW, winH)= (180,320)
windowSize=(winW,winH)
downscale=1.5
for resized in pyramid_gaussian(img, downscale=1.5):
for (x,y,window) in sliding_window(resized, stepSize=10, windowSize=(winW,winH)):
if window.shape[0] != winH or window.shape[1] !=winW:
continue
window=color.rgb2gray(window)
fds = hog(window, orientations, pixels_per_cell, cells_per_block, block_norm='L2')
fds = fds.reshape(1, -1)
pred = model.predict(fds)
if pred == 1:
if model.decision_function(fds) > 0.6:
print("Detection:: Location -> ({}, {})".format(x, y))
print("Scale -> {} | Confidence Score {} \n".format(scale,model.decision_function(fds)))
detections.append((int(x*(downscale**scale)),int(y*(downscale**scale)),model.decision_function(fds),int(windowSize[0]*(downscale**scale)),int(windowSize[1]*(downscale**scale))
scale+=1
** ValueError追溯(最近一次通话最后一次) ---->金字塔1中img1的img1(img,downscale = 2): 滑动窗口中的(x,y,window)(调整大小,stepSize = 10,windowSize =(winW,winH))中的2: 3,如果window.shape [0]!= winH或window.shape [1]!= winW: 4继续 5 window = color.rgb2gray(window)
D:\ Anaconda3 \ lib \ site-packages \ skimage \ transform \ pyramids.py在 pyramid_gaussian(图像,max_layer,缩小比例,sigma,顺序,模式, cval,多通道) 195 196#强制浮动以在金字塔中保持一致的数据类型 -> 197图片= img_as_float(图片) 198 199层= 0
D:\ Anaconda3 \ lib \ site-packages \ skimage \ util \ dtype.py在 img_as_float(image,force_copy) 411 412“”“ -> 413 return convert(image,np.floating,force_copy) 414 415
D:\ Anaconda3 \ lib \ site-packages \ skimage \ util \ dtype.py in convert(image, dtype,force_copy,uniform) 124(如果不是)(_ supported_types中的dtype_in和_supported_types中的dtype_out): 125引发ValueError(“无法从{}转换为{}。” -> 126 .format(dtypeobj_in,dtypeobj_out)) 127 128 def sign_loss():
ValueError:无法从对象转换为float64。
**