问题
I am facing a problem generating a collection file of the positive images to train the Haar Cascade in OpenCV to detect a car. On every tutorial I found on the internet, it is the same command, however i am unable to execute it.
I am using Command Prompt and Windows Power Shell to execute this command. find ./positive_images/ -iname '.*pgm' > positives.txt the screenshot of the output I am running this command from root of my directory. The positive images are stored in positive_images folder.
OUTPUT:
File not found - '*pgm'
However, the positive_images directory contains 550 files with .pgm extension.
回答1:
Error File not found - '*pgm'
I am using Command Prompt and Windows Power Shell to execute this command:
find ./positive_images/ -iname '.*pgm' > positives.txt
The above command is using the syntax of a Unix version of find, but you are running it under Windows. PowerShell does not have a built in find command so you are running C:\Windows\System32\find.exe.
Notes:
Unix
findis used to search for files.Windows
findis used to search for string in files.
As you are running on Windows you need to use dir instead of find:
dir /b /s positive_images\*.pgm > positives.txt
Further Reading
- An A-Z Index of the Windows CMD command line - An excellent reference for all things Windows cmd line related.
- dir - Display a list of files and subfolders.
- find - Search for a text string in a file & display all the lines where it is found.
来源：https://stackoverflow.com/questions/38422177/error-using-the-find-command-to-generate-a-collection-file-on-opencv