In order for using the Open CV library, one must firstly have the pre-requisites of OpenCV 3.4 version or a more updated version, the Python 3.6 or above updated version, the Numpy library, a source file from where the input will be taken in the form of Image, source from Webcam or Video input.How to rotate image Using the Open CV rotate() Function? Return Value: The resultant image is modified due to the operation of the Open CV rotate() method, after which being converted into the specified angle as entered by the user or coder. This parameter is optional and may not be entered by the user. The image obtained as output is of exactly the same size and image-centred depth compared to the original image. dst: It is the image that is obtained after the modification due to the operation of the Open CV rotate() method.rotateCode: The parameter is used in order to specify the order in which the image (input in terms of an array) which the coder has used has to be rotated.src: It is the image that has been provided by the user of the coder, which has to be modified in accordance with its colour and space utilisation to rotate the image completely.The following parameter is used in order to write a code for using the Open CV rotate() method:
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