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image_generic_operations.py
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image_generic_operations.py
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import os
import sys
import cv2
from inspect import currentframe, getframeinfo
import argparse
import numpy as np
'''
Blog:
https://blog.csdn.net/fengbingchun/article/details/131152103
https://blog.csdn.net/fengbingchun/article/details/131493028
'''
def get_image_list(path, image_suffix):
image_list = []
for x in os.listdir(path):
if x.endswith(image_suffix):
image_list.append(path+"/"+x)
return image_list
def get_image_name(image_name):
pos = image_name.rfind("/")
image_name = image_name[pos+1:]
return image_name
def get_image_name2(image_name, image_suffix):
name = get_image_name(image_name)
#name = name[:len(image_suffix)-1] # sometimes, the fetched name is incorrect, for example: 10-1.JPG
pos =name.rfind(".")
return name[:pos]
def image_rotate_clockwise(image_list, degrees, result_path):
print("image rotation ...")
os.makedirs(result_path, exist_ok=True)
if degrees == 90:
rotate_code = cv2.ROTATE_90_CLOCKWISE
elif degrees == 180:
rotate_code = cv2.ROTATE_180
elif degrees == 270:
rotate_code = cv2.ROTATE_90_COUNTERCLOCKWISE
else:
raise Exception("Unsupported rotat degrees: {}, it only supports: clockwise 90, 180, 270; Error Line: {}".format(degrees, getframeinfo(currentframe()).lineno))
for name in image_list:
print(f"\t{name}")
image_name = get_image_name(name)
#print(f"image name:{image_name}"); sys.exit(1)
mat = cv2.imread(name, -1)
mat = cv2.rotate(mat, rotateCode=rotate_code)
cv2.imwrite(result_path+"/"+image_name, mat)
def image_resize(image_list, dst_width, dst_height, result_path):
print("image resize ...")
os.makedirs(result_path, exist_ok=True)
if dst_width == 0 or dst_height == 0:
raise Exception("Image width or height cannot be 0: {}, {}; Error Line: {}".format(dst_width, dst_height, getframeinfo(currentframe()).lineno))
mat = cv2.imread(image_list[0], -1)
h, w, _ = mat.shape
if h > dst_height and w > dst_width:
interpolation = cv2.INTER_AREA
else:
interpolation = cv2.INTER_CUBIC
for name in image_list:
print(f"\t{name}")
image_name = get_image_name(name)
#print(f"image name:{image_name}"); sys.exit(1)
mat = cv2.imread(name, -1)
mat = cv2.resize(mat, (dst_width, dst_height), interpolation=interpolation)
cv2.imwrite(result_path+"/"+image_name, mat)
def image_segment(image_list, image_suffix, path2, image_suffix2, degrees, dst_width, dst_height, result_path):
print("image segment ...")
os.makedirs(result_path, exist_ok=True)
for name in image_list:
print(f"\t{name}")
image_name = get_image_name2(name, image_suffix)
#print(f"image name:{image_name}"); sys.exit(1)
name2 = path2 + "/" + image_name + image_suffix2
print(f"\t{name2}")
bgr = cv2.imread(name, -1)
h1, w1, c1 = bgr.shape
mask = cv2.imread(name2, -1)
h2, w2 = mask.shape
if c1 != 3:
raise Exception("Unsupported number of image channels: {}, {}; Error Line: {}".format(c1, c2, getframeinfo(currentframe()).lineno))
if h1 != h2 or w1 != w2: # rotate
if h1 != w2 or w1 != h2:
raise Exception("Inconsistent image size: {},{}:{},{}; Error Line: {}".format(h1, w1, h2, w2, getframeinfo(currentframe()).lineno))
if degrees == 90:
rotate_code = cv2.ROTATE_90_CLOCKWISE
elif degrees == 180:
rotate_code = cv2.ROTATE_180
elif degrees == 270:
rotate_code = cv2.ROTATE_90_COUNTERCLOCKWISE
else:
raise Exception("Unsupported rotat degrees: {}, it only supports: clockwise 90, 180, 270; Error Line: {}".format(degrees, getframeinfo(currentframe()).lineno))
bgr = cv2.rotate(bgr, rotateCode=rotate_code)
bgra = cv2.cvtColor(bgr, cv2.COLOR_BGR2BGRA)
if dst_width != 0 or dst_height != 0: # resize
if h1 > dst_height and w1 > dst_width:
interpolation = cv2.INTER_AREA
else:
interpolation = cv2.INTER_CUBIC
bgra = cv2.resize(bgra, (dst_width, dst_height), interpolation=interpolation)
mask = cv2.resize(mask, (dst_width, dst_height), interpolation=interpolation)
#h3, w3, c3 = bgra.shape
#result = np.zeros((h3, w3, c3), dtype="uint8")
result = cv2.bitwise_and(bgra, bgra, mask=mask)
cv2.imwrite(result_path+"/"+image_name+".png", result)
def image_border(image_list, border_width, border_height, value, result_path):
print("image border ...")
os.makedirs(result_path, exist_ok=True)
mat = cv2.imread(image_list[0], -1)
h, w, _ = mat.shape
top = border_height
bottom = border_height
left = border_width
right = border_width
for name in image_list:
print(f"\t{name}")
image_name = get_image_name(name)
#print(f"image name:{image_name}"); sys.exit(1)
mat = cv2.imread(name, -1)
result = cv2.copyMakeBorder(mat, top, bottom, left, right, cv2.BORDER_CONSTANT, np.array(value))
cv2.imwrite(result_path+"/"+image_name, result)
def parse_args():
parser = argparse.ArgumentParser(description="image generic operations", add_help=True)
parser.add_argument("--image_src_path", required=True, type=str, help="the path of the image to be operated, for example: ../../test_images")
parser.add_argument("--image_src_path2", default="", type=str, help="the path of the image to be operated, for example: ../../test_images")
parser.add_argument("--operation", required=True, type=str, choices=["rotate", "resize", "segment", "border"], help="specifies the operation to take on the image")
parser.add_argument("--image_dst_path", required=True, type=str, help="the path where the resulting image is saved, for example: ../../test_images/result")
parser.add_argument("--degrees", default=90, type=int, choices=[90, 180, 270], help="the degrees by which the image is rotated clockwise")
parser.add_argument("--width", default=0, type=int, help="the width of the image after scaling")
parser.add_argument("--height", default=0, type=int, help="the height of the image after scaling")
parser.add_argument("--image_suffix", default=".png", type=str, help="the suffix of the processed image")
parser.add_argument("--image_suffix2", default=".png", type=str, help="the suffix of the processed image")
parser.add_argument("--value", default="", type=str, help="pixel value, order: b g r a, the length can be 1 2 3 4, for example: 128 128 255 255")
args = parser.parse_args()
return args
if __name__ == "__main__":
args = parse_args()
if args.value != "":
value = []
for v in args.value.split():
value.append(int(v))
image_list = get_image_list(args.image_src_path, args.image_suffix)
if len(image_list) == 0:
print(f"Warning: no image, directory: {args.image_src_path}")
sys.exit(1)
if args.operation == "rotate":
image_rotate_clockwise(image_list, args.degrees, args.image_dst_path)
if args.operation == "resize":
image_resize(image_list, args.width, args.height, args.image_dst_path)
if args.operation == "segment":
image_segment(image_list, args.image_suffix, args.image_src_path2, args.image_suffix2, args.degrees, args.width, args.height, args.image_dst_path)
if args.operation == "border":
image_border(image_list, args.width, args.height, value, args.image_dst_path)
print("test finish")