ORB algorithm

[ShubhamGupta577]

Description

Added the code for the ORB(Oriented FAST Rotated Brief) algorithm of OpenCV for the feature detection of an image.

Fixes #898

Have you read the Contributing Guidelines on Pull Requests?

• Yes

Type of change

• New feature (non-breaking change which adds functionality)

Checklist:

• My code follows the style guidelines(Clean Code) of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have created a helpful and easy to understand README.md
• My documentation follows Template for README.md
• My changes generate no new warnings
• I have added tests/screenshots(if any) that prove my fix is effective or that my feature works.

[ShubhamGupta577]

@kaustubhgupta, Please review this PR.

[santushtisharma10]

@ShubhamGupta577 you are using the same image for training and testing. Use different image for testing and training

[ShubhamGupta577]

@ShubhamGupta577 you are using the same image for training and testing. Use different image for testing and training

@santushtisharma10, As ORB is used to detect the features of an image regardless of its orientation and resolution. So for the test image, I added the Scale invariance and rotational invariance to the training image so that its alignment and resolution get changed and after that try to match the features.
So can you please specify to me that either I have to use 2 totally different images for matching or can continue with this.

[santushtisharma10]

@ShubhamGupta577 i am not asking to use 2 totally different images. Look at the output here. Like in your case as well, you can use 2 different pics of same celebrity, that should also work

[kaustubhgupta]

Suggested change

	path=input('Enter the path of the image')
	path=input('Enter the path of the image: ')

[kaustubhgupta]

Suggested change

	path2=input('Enter the path for testing image')
	path2=input('Enter the path for testing image: ')

[kaustubhgupta]

Do this change in the path. Also, save the image as file_name (featureMatched).jpg. To understand better, see this example:
Suppose input image name: abc.jpg
Output image name should be: abc (featureMatched).jpg

Suggested change

	cv2.imwrite('./feature_matched.jpg',result)
	cv2.imwrite('./ORB Algorithm/feature_matched.jpg',result)