code: def get_utm_bbox(img_bbox, transform):
      
      east1, north1 = pixel_to_utm(img_bbox[0], img_bbox[1], transform)
      east2, north2 = pixel_to_utm(img_bbox[2], img_bbox[3], transform)
      return [east1, north1, east2, north2]
docs: Get UTM coordinates given a bounding box in pixels and a transform
  
      :param img_bbox: boundaries of bounding box in pixels as `[row1, col1, row2, col2]`
      :type img_bbox: list
      :param transform: georeferencing transform of the image, e.g. `(x_upper_left, res_x, 0, y_upper_left, 0, -res_y)`
      :type transform: tuple or list
      :return: UTM coordinates as [east1, north1, east2, north2]
      :rtype: list