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import os
import cv2
dataset_path = " datasets/v4_4_test_dataset "
annotation_file = " datasets/v4_4_test_dataset/label.txt "
small_images_path = " datasets/v4_4_test_dataset_small "
new_annotation_file = " datasets/v4_4_test_dataset_small/label.txt "
os . makedirs ( small_images_path , exist_ok = True )
with open ( annotation_file , " r " ) as f :
lines = f . readlines ( )
for i , line in enumerate ( lines ) :
image_name = line . split ( " " ) [ 0 ]
image_path = os . path . join ( dataset_path , image_name )
try :
image = cv2 . imread ( image_path )
height , width , _ = image . shape
# 如果图像的宽度和高度都小于2000而且长宽比小于2, 将其复制到新的文件夹, 并保存其标注信息
if height < 2000 and width < 2000 :
if max ( height , width ) / min ( height , width ) < 2 :
print ( i , height , width , image_path )
small_image_path = os . path . join ( small_images_path , image_name )
cv2 . imwrite ( small_image_path , image )
with open ( new_annotation_file , " a " ) as f :
f . write ( f " { line } " )
except :
continue