您好我正在使用此代码：
import sys
import glob
import struct
import argparse
import traceback
def exception_response(e):
exc_type, exc_value, exc_traceback = sys.exc_info()
lines = traceback.format_exception(exc_type, exc_value, exc_traceback)
for line in lines:
print(line)
def get_args():
parser = argparse.ArgumentParser()
parser.add_argument('-v', dest='vec_directory')
parser.add_argument('-o', dest='output_filename')
args = parser.parse_args()
return (args.vec_directory, args.output_filename)
def merge_vec_files(vec_directory, output_vec_file):
"""
Iterates throught the .vec files in a directory and combines them.
(1) Iterates through files getting a count of the total images in the .vec files
(2) checks that the image sizes in all files are the same
The format of a .vec file is:
4 bytes denoting number of total images (int)
4 bytes denoting size of images (int)
2 bytes denoting min value (short)
2 bytes denoting max value (short)
ex: 6400 0000 4605 0000 0000 0000
hex 6400 0000 4605 0000 0000 0000
# images size of h * w min max
dec 100 1350 0 0
:type vec_directory: string
:param vec_directory: Name of the directory containing .vec files to be combined.
Do not end with slash. Ex: '/Users/username/Documents/vec_files'
:type output_vec_file: string
:param output_vec_file: Name of aggregate .vec file for output.
Ex: '/Users/username/Documents/aggregate_vec_file.vec'
"""
# Check that the .vec directory does not end in '/' and if it does, remove it.
if vec_directory.endswith('/'):
vec_directory = vec_directory[:-1]
# Get .vec files
files = glob.glob('{0}/*.vec'.format(vec_directory))
# Check to make sure there are .vec files in the directory
if len(files) <= 0:
print('Vec files to be mereged could not be found from directory: {0}'.format(vec_directory))
sys.exit(1)
# Check to make sure there are more than one .vec files
if len(files) == 1:
print('Only 1 vec file was found in directory: {0}. Cannot merge a single file.'.format(vec_directory))
sys.exit(1)
# Get the value for the first image size
prev_image_size = 0
try:
with open(files[0], 'rb') as vecfile:
content = b''.join((line) for line in vecfile.readlines())
val = struct.unpack('<iihh', content[:12])
prev_image_size = val[1]
except IOError as e:
print('An IO error occured while processing the file: {0}'.format(f))
exception_response(e)
# Get the total number of images
total_num_images = 0
for f in files:
try:
with open(f, 'rb') as vecfile:
content = b''.join((line) for line in vecfile.readlines())
val = struct.unpack('<iihh', content[:12])
num_images = val[0]
image_size = val[1]
if image_size != prev_image_size:
err_msg = """The image sizes in the .vec files differ. These values must be the same. \n The image size of file {0}: {1}\n
The image size of previous files: {0}""".format(f, image_size, prev_image_size)
sys.exit(err_msg)
total_num_images += num_images
except IOError as e:
print('An IO error occured while processing the file: {0}'.format(f))
exception_response(e)
# Iterate through the .vec files, writing their data (not the header) to the output file
# '<iihh' means 'little endian, int, int, short, short'
header = struct.pack('<iihh', total_num_images, image_size, 0, 0)
try:
with open(output_vec_file, 'wb') as outputfile:
outputfile.write(header)
for f in files:
with open(f, 'rb') as vecfile:
content = b''.join((line) for line in vecfile.readlines())
outputfile.write(bytearray(content[12:]))
except Exception as e:
exception_response(e)
if __name__ == '__main__':
vec_directory, output_filename = get_args()
if not vec_directory:
sys.exit('mergvec requires a directory of vec files. Call mergevec.py with -v /your_vec_directory')
if not output_filename:
sys.exit('mergevec requires an output filename. Call mergevec.py with -o your_output_filename')
merge_vec_files(vec_directory, output_filename)
我收到此错误：
File "mergevec.py", line 95, in merge_vec_files
with open(output_vec_file, 'wb') as outputfile:
PermissionError: [Errno 13] Permission denied: 'output_vec_file'
我的目标是将矢量文件合并在一起，创建一个矢量文件，作为opencv中haar级联的一部分。我刚刚更新了这篇文章，并且有很多代码，所以我目前正在使用它作为填充文本，但是，是的任何帮助，你可以给我非常感谢。感谢