import os
import shutil
from tqdm import tqdm
import cv2
def my_letter_box(img,size=(320,320)): #
h,w,c = img.shape
r = min(size0/h,size1/w)
new_h,new_w = int(h*r),int(w*r)
top = int((size0-new_h)/2)
left = int((size1-new_w)/2)
bottom = size0-new_h-top
right = size1-new_w-left
img_resize = cv2.resize(img,(new_w,new_h))
img = cv2.copyMakeBorder(img_resize,top,bottom,left,right,borderType=cv2.BORDER_CONSTANT,value=(114,114,114))
return img,r,left,top
SRC_DIR = r"/data/detect/2/"
DST_DIR_IMG = r"/data/detect/images320/"
DST_DIR_LABELS = r"/data/detect/labels320/"
imglist = os.listdir(SRC_DIR)
for file in tqdm(imglist):
if not file.endswith(".jpg"):
continue
name = file.split(".jpg")0
if not os.path.exists(SRC_DIR+name+".txt"):
continue
#shutil.copy(SRC_DIR+file,DST_DIR_IMG+file)
img =cv2.imread(SRC_DIR+file)
h_img,w_img,c= img.shape
img_letter,rr,left,top= my_letter_box(img)
cv2.imwrite(DST_DIR_IMG+file,img_letter)
with open(os.path.join(SRC_DIR, name+".txt"), 'r', encoding="utf-8") as r:
label_list = r.readlines()
with open(os.path.join(DST_DIR_LABELS, name+".txt"), 'a+') as ftxt:
for label in label_list:
label1 = x for x in label.split(" ") if x != ""
class_name =label10
x = float(label11)
y = float(label12)
w = float(label13)
h = float(label14)
ww = w_img*w
hh = h_img*h
xx1 = (x-w/2)*w_img
yy1 = (y-h/2)*h_img
xx2 = ww+xx1
yy2 = hh+yy1
x_letter_1 = (xx1)*rr+left
y_letter_1 = (yy1)*rr+top
x_letter_2 = (xx2)*rr+left
y_letter_2 = (yy2)*rr+top
#print("x=",x)
#print("h=",h)
#ftxt.writelines(class_name + " " + str(xx1) + " " + str(yy1)+" " + str(xx2) + " "+str(yy2) + '\n')
ftxt.writelines(class_name + " " + str(x_letter_1) + " " + str(y_letter_1)+" " + str(x_letter_2) + " "+str(y_letter_2) + '\n')
ftxt.close()