蟒蛇图像上的滑动窗口

Question

我想把这个矩阵代码转换为python：images = []; foreach image in images:     features = [];     windows = extractWindows(image,size=(30,30),stride=(30,30));     foreach window in windows:          featureVector = extractFeatures(window);          features.append(featureVector);     saveAsCSV('image_name_features.txt',features);

Answer 1

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]])

def extractFeatures(window):

  # fast? sift? orb? or something?

  return features

images = []

for image in images:

  features = []

  windows = sliding_window(image, 30, (30, 30))

  for window in windows:

    featureVector = extractFeatures(window)

    features.append(featureVector)

  numpy.savetxt('image_name_features.txt', feautres, delimiter=",")